diff --git a/UnityProject/.idea/.idea.UnityProject/.idea/contentModel.xml b/UnityProject/.idea/.idea.UnityProject/.idea/contentModel.xml
index 55e7f86..4626a6d 100644
--- a/UnityProject/.idea/.idea.UnityProject/.idea/contentModel.xml
+++ b/UnityProject/.idea/.idea.UnityProject/.idea/contentModel.xml
@@ -13,9 +13,10 @@
           <e p="PdBackendEditor.cs" t="Include" />
           <e p="PdSpectrumBindEditor.cs" t="Include" />
           <e p="RectangularSelection.cs" t="Include" />
-          <e p="SpectrumGenerator.cs" t="Include" />
+          <e p="SpectrumGeneratorEditMode.cs" t="Include" />
           <e p="UnitTest" t="Include">
             <e p="UnitTest_ChangeObserver.cs" t="Include" />
+            <e p="UnitTest_RectangularSelection.cs" t="Include" />
             <e p="UnitTest_SpectrumGenerator.cs" t="Include" />
           </e>
         </e>
@@ -30,17 +31,24 @@
                 <e p="RMSAnalyzer.cs" t="Include" />
               </e>
             </e>
+            <e p="PdBackendDemo" t="Include">
+              <e p="script" t="Include">
+                <e p="BoomBall.cs" t="Include" />
+              </e>
+            </e>
           </e>
         </e>
         <e p="Scripts" t="Include">
           <e p="PdConnection" t="Include">
             <e p="FFTArrayContainer.cs" t="Include" />
+            <e p="ISpectrumGenerator.cs" t="Include" />
             <e p="PdArray.cs" t="Include" />
             <e p="PdBackend.cs" t="Include" />
             <e p="PdConstant.cs" t="Include" />
             <e p="PdProcess.cs" t="Include" />
             <e p="PdSocket.cs" t="Include" />
             <e p="PdSpectrumBind.cs" t="Include" />
+            <e p="SpectrumGeneratorPlayMode.cs" t="Include" />
           </e>
           <e p="TemplateLibrary" t="Include">
             <e p="ChangeObserver.cs" t="Include" />
diff --git a/UnityProject/.idea/.idea.UnityProject/.idea/workspace.xml b/UnityProject/.idea/.idea.UnityProject/.idea/workspace.xml
index f4a0d72..5d865dc 100644
--- a/UnityProject/.idea/.idea.UnityProject/.idea/workspace.xml
+++ b/UnityProject/.idea/.idea.UnityProject/.idea/workspace.xml
@@ -2,20 +2,22 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="c6a8ca49-0b91-43c0-a787-44b1fda29c5f" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs.meta" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditMode.cs" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditMode.cs.meta" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/ISpectrumGenerator.cs" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/ISpectrumGenerator.cs.meta" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/.idea.UnityProject/.idea/contentModel.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/.idea.UnityProject/.idea/contentModel.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/.idea.UnityProject/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/.idea.UnityProject/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Assembly-CSharp-Editor.csproj" beforeDir="false" afterPath="$PROJECT_DIR$/Assembly-CSharp-Editor.csproj" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Assets/Editor/PdBackendEditor.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Editor/PdBackendEditor.cs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/Assembly-CSharp.csproj" beforeDir="false" afterPath="$PROJECT_DIR$/Assembly-CSharp.csproj" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Assets/Plugins/NSubstitute.dll" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Plugins/NSubstitute.dll" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs.meta" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs.meta" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdConstant.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdConstant.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdProcess.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdProcess.cs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/UnityProject.sln.DotSettings.user" beforeDir="false" afterPath="$PROJECT_DIR$/UnityProject.sln.DotSettings.user" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSpectrumBind.cs" beforeDir="false" afterPath="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSpectrumBind.cs" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -24,84 +26,84 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <splitter split-orientation="horizontal" split-proportion="0.77307695">
+    <splitter split-orientation="horizontal" split-proportion="0.667738">
       <split-first>
         <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-          <file pinned="false" current-in-tab="false">
-            <entry file="file://$PROJECT_DIR$/Assets/Editor/PdBackendEditor.cs">
-              <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="-450">
-                  <caret line="18" column="27" selection-start-line="18" selection-start-column="27" selection-end-line="18" selection-end-column="27" />
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-                  </folding>
-                </state>
-              </provider>
-            </entry>
-          </file>
-          <file pinned="false" current-in-tab="false">
+          <file pinned="false" current-in-tab="true">
             <entry file="file://$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="286">
-                  <caret line="74" column="26" lean-forward="true" selection-start-line="74" selection-start-column="26" selection-end-line="74" selection-end-column="26" />
+                <state relative-caret-position="194">
+                  <caret line="50" selection-start-line="50" selection-end-line="50" />
                   <folding>
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+                    <marker date="1570032793679" expanded="true" signature="3369:3590" ph="{...}" />
                   </folding>
                 </state>
               </provider>
             </entry>
           </file>
           <file pinned="false" current-in-tab="false">
-            <entry file="file://$PROJECT_DIR$/Assets/Editor/LevelMeter.cs">
+            <entry file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/78C1F696-6868-4B82-A3AE-82CA8C8FF5EF/81/c9ecafca/EditorGUILayout.cs">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="385">
-                  <caret line="25" column="8" selection-start-line="25" selection-start-column="8" selection-end-line="25" selection-end-column="8" />
+                <state relative-caret-position="1055">
+                  <caret line="4778" column="23" selection-start-line="4778" selection-start-column="23" selection-end-line="4778" selection-end-column="23" />
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSpectrumBind.cs">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="730">
+                  <caret line="39" selection-start-line="39" selection-end-line="39" />
                   <folding>
-                    <marker date="1569783079568" expanded="true" signature="6:37" ph="..." />
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+                    <marker date="1570031816312" expanded="true" signature="6:44" ph="..." />
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                 </state>
               </provider>
             </entry>
           </file>
           <file pinned="false" current-in-tab="false">
-            <entry file="file://$PROJECT_DIR$/Assets/Editor/RectangularSelection.cs">
+            <entry file="file://$PROJECT_DIR$/Assets/Editor/AppBuilder.cs">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="358">
-                  <caret line="30" column="70" selection-start-line="30" selection-start-column="70" selection-end-line="30" selection-end-column="70" />
+                <state relative-caret-position="175">
+                  <caret line="7" selection-start-line="7" selection-end-line="7" />
                   <folding>
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+                    <marker date="1569968766472" expanded="true" signature="76:361" ph="{...}" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="300">
+                  <caret line="13" column="48" lean-forward="true" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
+                  <folding>
+                    <marker date="1570031999039" expanded="false" signature="6:32" ph="..." />
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+                    <marker date="1570031999039" expanded="true" signature="1404:1610" ph="{...}" />
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@@ -110,84 +112,74 @@
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             <entry file="file://$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="95">
-                  <caret line="71" column="49" selection-start-line="71" selection-start-column="49" selection-end-line="71" selection-end-column="49" />
+                <state relative-caret-position="1136">
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+                    <marker date="1570029471587" expanded="true" signature="836:3555" ph="/* [Test] ... */" />
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             </entry>
           </file>
           <file pinned="false" current-in-tab="false">
-            <entry file="file://$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_ChangeObserver.cs">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="750">
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+            <entry file="file://$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditMode.cs">
               <provider selected="true" editor-type-id="text-editor">
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               <provider selected="true" editor-type-id="text-editor">
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+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs">
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@@ -235,6 +262,63 @@
               </provider>
             </entry>
           </file>
+          <file pinned="false" current-in-tab="false">
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+          </file>
+          <file pinned="false" current-in-tab="true">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs">
+              <provider selected="true" editor-type-id="text-editor">
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+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdProcess.cs">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="465">
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       </split-second>
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@@ -258,10 +342,13 @@
     <setting file="file://$PROJECT_DIR$/Assets/ThridParty/KinectView/Scripts/BodySourceView.cs" root0="FORCE_HIGHLIGHTING" />
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     <setting file="file://$PROJECT_DIR$/Assets/Scripts/VideoInput/KinectManagerBehaviour.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_RectangularSelection.cs.meta" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_RectangularSelection.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/242531B3-D7D7-4252-86FA-13A3E999EEA8/5e/f4afe38e/GUIStyle.cs" root0="SKIP_HIGHLIGHTING" />
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     <setting file="file://$PROJECT_DIR$/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/78C1F696-6868-4B82-A3AE-82CA8C8FF5EF/d3/21de5e70/SerializedProperty.cs" root0="SKIP_HIGHLIGHTING" />
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     <setting file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSocket.cs" root0="FORCE_HIGHLIGHTING" />
@@ -276,6 +363,7 @@
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+    <setting file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/78C1F696-6868-4B82-A3AE-82CA8C8FF5EF/ee/4432b3eb/SerializedObject.cs" root0="SKIP_HIGHLIGHTING" />
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@@ -286,9 +374,12 @@
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     <setting file="file://$PROJECT_DIR$/Assets/ThridParty/Windows/Kinect/InfraredFrameReader.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/ISpectrumGenerator.cs" root0="FORCE_HIGHLIGHTING" />
     <setting file="file://$PROJECT_DIR$/Assets/Scripts/TemplateLibrary/ChangeObserver.cs" root0="FORCE_HIGHLIGHTING" />
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+    <setting file="file://$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditMode.cs" root0="FORCE_HIGHLIGHTING" />
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@@ -303,7 +394,7 @@
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     <setting file="file://$PROJECT_DIR$/Assets/Scripts/Visualizer/PointCloudBehaviour.cs" root0="FORCE_HIGHLIGHTING" />
-    <setting file="file://$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs" root0="FORCE_HIGHLIGHTING" />
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@@ -317,11 +408,6 @@
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         <option value="$PROJECT_DIR$/Assets/Scripts/VideoInput/ComponentFactory.cs" />
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         <option value="$PROJECT_DIR$/Assets/Scripts/VideoInput/Editor/UnitTest/ComponentFactoryTestCase.cs" />
@@ -358,28 +444,33 @@
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-        <option value="$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs" />
         <option value="$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGenerator.cs" />
         <option value="$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scripts/PdConnection/ISpectrumGenerator.cs" />
+        <option value="$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditoMode.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSpectrumBind.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs" />
+        <option value="$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs" />
+        <option value="$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs" />
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+    <option name="x" value="1402" />
     <option name="y" value="389" />
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-    <option name="height" value="1225" />
+    <option name="width" value="3044" />
+    <option name="height" value="1286" />
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   <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
   <component name="ProjectView">
-    <navigator currentView="AssemblyExplorer" proportions="" version="1">
+    <navigator currentView="UnityExplorer" proportions="" version="1">
       <foldersAlwaysOnTop value="true" />
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@@ -413,40 +504,24 @@
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               <item name="PdConnection" type="1045f7f1:UnityExplorerNode" />
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           </expand>
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         </subPane>
         <option name="show-hidden-items" value="false" />
         <option name="show-project-names" value="true" />
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+      <pane id="SolutionExplorer">
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+          <expand>
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+              <item name="" type="784c90a0:SolutionExplorerRootNode" />
+              <item name="UnityProject" type="24d0babc:SolutionExplorerModelNode" />
+            </path>
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+          <select />
+        </subPane>
+        <option name="show-all-files" value="false" />
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       <pane id="AssemblyExplorer">
         <subPane>
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@@ -463,9 +538,6 @@
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@@ -610,7 +682,7 @@
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   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="114563000" />
+    <option name="totallyTimeSpent" value="122502000" />
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@@ -622,16 +694,16 @@
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+    <frame x="1402" y="389" width="3044" height="1286" extended-state="0" />
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@@ -700,100 +772,6 @@
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@@ -845,13 +823,6 @@
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@@ -911,17 +882,6 @@
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@@ -1003,34 +963,21 @@
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@@ -1062,22 +1009,6 @@
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@@ -1135,17 +1066,108 @@
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+            <marker date="1570031185961" expanded="true" signature="355:442" ph="{...}" />
+            <marker date="1570031185961" expanded="true" signature="511:668" ph="{...}" />
+            <marker date="1570031185961" expanded="true" signature="744:1066" ph="{...}" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$APPLICATION_CONFIG_DIR$/resharper-host/DecompilerCache/decompiler/E591B1DA-0E04-462B-AFD3-89F6587BF9EF/7f/cc3b76ab/FormatterServicesMethods.cs">
+    <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdSpectrumBind.cs">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="250">
-          <caret line="12" column="24" selection-start-line="12" selection-start-column="24" selection-end-line="12" selection-end-column="24" />
+        <state relative-caret-position="730">
+          <caret line="39" selection-start-line="39" selection-end-line="39" />
+          <folding>
+            <marker date="1570031816312" expanded="true" signature="6:44" ph="..." />
+            <marker date="1570031816312" expanded="true" signature="65:1395" ph="{...}" />
+            <marker date="1570031816312" expanded="true" signature="185:364" ph="{...}" />
+            <marker date="1570031816312" expanded="true" signature="434:1393" ph="{...}" />
+            <marker date="1570031816312" expanded="true" signature="693:891" ph="{...}" />
+            <marker date="1570031816312" expanded="true" signature="1175:1387" ph="{...}" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="375">
+          <caret line="15" column="9" lean-forward="true" selection-start-line="15" selection-start-column="9" selection-end-line="15" selection-end-column="9" />
+          <folding>
+            <marker date="1570032082269" expanded="true" signature="39:1135" ph="{...}" />
+            <marker date="1570032082269" expanded="true" signature="124:1133" ph="{...}" />
+            <marker date="1570032082269" expanded="true" signature="317:369" ph="{...}" />
+            <marker date="1570032082269" expanded="true" signature="417:1127" ph="{...}" />
+            <marker date="1570032082269" expanded="true" signature="543:1055" ph="{...}" />
+            <marker date="1570032082269" expanded="true" signature="768:911" ph="{...}" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/Assets/Editor/SpectrumGeneratorEditMode.cs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="400">
+          <caret line="16" column="20" selection-start-line="16" selection-start-column="20" selection-end-line="16" selection-end-column="20" />
+          <folding>
+            <marker date="1570031287193" expanded="true" signature="39:700" ph="{...}" />
+            <marker date="1570031287193" expanded="true" signature="124:697" ph="{...}" />
+            <marker date="1570031287193" expanded="true" signature="315:691" ph="{...}" />
+            <marker date="1570031287193" expanded="true" signature="372:627" ph="{...}" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/Assets/Scripts/PdConnection/PdBackend.cs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="300">
+          <caret line="13" column="48" lean-forward="true" selection-start-line="13" selection-start-column="48" selection-end-line="13" selection-end-column="48" />
+          <folding>
+            <marker date="1570031999039" expanded="false" signature="6:32" ph="..." />
+            <marker date="1570031999039" expanded="true" signature="53:1618" ph="{...}" />
+            <marker date="1570031999039" expanded="true" signature="98:1616" ph="{...}" />
+            <marker date="1570031999039" expanded="true" signature="460:1129" ph="{...}" />
+            <marker date="1570031999039" expanded="true" signature="887:1027" ph="{...}" />
+            <marker date="1570031999039" expanded="true" signature="1163:1374" ph="{...}" />
+            <marker date="1570031999039" expanded="true" signature="1404:1610" ph="{...}" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/Assets/Editor/PdSpectrumBindEditor.cs">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="286">
-          <caret line="74" column="26" lean-forward="true" selection-start-line="74" selection-start-column="26" selection-end-line="74" selection-end-column="26" />
+        <state relative-caret-position="194">
+          <caret line="50" selection-start-line="50" selection-end-line="50" />
           <folding>
-            <marker date="1569960468708" expanded="true" signature="6:37" ph="..." />
-            <marker date="1569960468708" expanded="true" signature="58:3348" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="143:3346" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="288:397" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="692:1043" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="1090:1505" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="1578:2434" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="1910:2334" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="2474:3054" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="2601:3044" ph="{...}" />
-            <marker date="1569960468708" expanded="true" signature="3110:3331" ph="{...}" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="95">
-          <caret line="71" column="49" selection-start-line="71" selection-start-column="49" selection-end-line="71" selection-end-column="49" />
-          <folding>
-            <marker date="1569960543801" expanded="true" signature="6:60" ph="..." />
-            <marker date="1569960543801" expanded="true" signature="81:2762" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="145:2760" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="389:852" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="625:715" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="911:1150" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="1219:1398" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="1469:1954" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="2040:2754" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="2352:2744" ph="{...}" />
-            <marker date="1569960543801" expanded="true" signature="2412:2730" ph="{...}" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/Assets/Editor/SpectrumGenerator.cs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="385">
-          <caret line="58" column="58" lean-forward="true" selection-start-line="58" selection-start-column="58" selection-end-line="58" selection-end-column="58" />
-          <folding>
-            <marker date="1569961031521" expanded="true" signature="39:1970" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="74:180" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="241:1968" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="348:421" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="494:1528" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="588:1458" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="660:1444" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="829:1060" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="1125:1288" ph="{...}" />
-            <marker date="1569961031521" expanded="true" signature="1602:1962" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="6:37" ph="..." />
+            <marker date="1570032793679" expanded="true" signature="58:3598" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="143:3596" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="204:313" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="675:1221" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="1268:2667" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="2080:2522" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="2173:2279" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="2300:2508" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="2708:3313" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="2835:3303" ph="{...}" />
+            <marker date="1570032793679" expanded="true" signature="3369:3590" ph="{...}" />
           </folding>
         </state>
       </provider>
diff --git a/UnityProject/Assembly-CSharp-Editor.csproj b/UnityProject/Assembly-CSharp-Editor.csproj
index 1e76d60..9cf6e07 100644
--- a/UnityProject/Assembly-CSharp-Editor.csproj
+++ b/UnityProject/Assembly-CSharp-Editor.csproj
@@ -62,7 +62,7 @@
     <Compile Include="Assets\Editor\PdBackendEditor.cs" />
     <Compile Include="Assets\Editor\PdSpectrumBindEditor.cs" />
     <Compile Include="Assets\Editor\RectangularSelection.cs" />
-    <Compile Include="Assets\Editor\SpectrumGenerator.cs" />
+    <Compile Include="Assets\Editor\SpectrumGeneratorEditMode.cs" />
     <Compile Include="Assets\Editor\UnitTest\UnitTest_ChangeObserver.cs" />
     <Compile Include="Assets\Editor\UnitTest\UnitTest_RectangularSelection.cs" />
     <Compile Include="Assets\Editor\UnitTest\UnitTest_SpectrumGenerator.cs" />
diff --git a/UnityProject/Assembly-CSharp.csproj b/UnityProject/Assembly-CSharp.csproj
index 4703cd5..e456efe 100644
--- a/UnityProject/Assembly-CSharp.csproj
+++ b/UnityProject/Assembly-CSharp.csproj
@@ -59,13 +59,16 @@
   <ItemGroup>
     <Compile Include="Assets\Scenes\Examples\Example1\script\BallMapping.cs" />
     <Compile Include="Assets\Scenes\Examples\Example1\script\RmsAnalyzer.cs" />
+    <Compile Include="Assets\Scenes\Examples\PdBackendDemo\script\BoomBall.cs" />
     <Compile Include="Assets\Scripts\PdConnection\FFTArrayContainer.cs" />
+    <Compile Include="Assets\Scripts\PdConnection\ISpectrumGenerator.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdArray.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdBackend.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdConstant.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdProcess.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdSocket.cs" />
     <Compile Include="Assets\Scripts\PdConnection\PdSpectrumBind.cs" />
+    <Compile Include="Assets\Scripts\PdConnection\SpectrumGeneratorPlayMode.cs" />
     <Compile Include="Assets\Scripts\TemplateLibrary\ChangeObserver.cs" />
     <Compile Include="Assets\Scripts\Versioning\VersionToggleBehaviour.cs" />
     <Compile Include="Assets\Scripts\VideoInput\ComponentFactory.cs" />
diff --git a/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs b/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
index 6a62b18..0aac61a 100644
--- a/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
+++ b/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
@@ -6,65 +6,72 @@ namespace cylvester
     [CustomEditor(typeof(PdSpectrumBind))]
     class PdSpectrumBindEditor : Editor
     {
-        private const int TextureWidth = 512;
-        private const int TextureHeight = 256;
-        private readonly string[] channels = {
+        private readonly string[] channels_ =
+        {
             "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16"
         };
 
-        private ISpectrumGenerator spectrumGenerator_;
         private IRectangularSelection rectangularSelection_;
-        private Rect paintSpace_;
 
         private SerializedProperty selectionProperty_;
         private SerializedProperty pdBackendProperty_;
+        private SerializedProperty energyChangedProperty_;
+        private Rect paintSpace_;
+        private ISpectrumGenerator spectrumGeneratorEditMode_;
 
         public void OnEnable()
         {
-            spectrumGenerator_ = new SpectrumGenerator(TextureWidth, TextureHeight);
-            rectangularSelection_ = new RectangularSelection(TextureWidth, TextureHeight);
+            var behaviour = (IPdSpectrumBind) target;
 
             pdBackendProperty_ = serializedObject.FindProperty("pdBackend");
             selectionProperty_ = serializedObject.FindProperty("selection");
+            energyChangedProperty_ = serializedObject.FindProperty("energyChanged");
+            rectangularSelection_ = new RectangularSelection(behaviour.TextureWidth, behaviour.TextureHeight);
+            spectrumGeneratorEditMode_ = new SpectrumGeneratorEditMode(behaviour.TextureWidth, behaviour.TextureHeight);
         }
 
         public override void OnInspectorGUI()
         {
-            var behaviour = (IPdSpectrumBind)target;
+            var behaviour = (IPdSpectrumBind) target;
             EditorGUILayout.PropertyField(pdBackendProperty_);
 
             GUILayout.Label("PureData Inputs", EditorStyles.boldLabel);
-            behaviour.Channel = EditorGUILayout.Popup("Input Channel", behaviour.Channel, channels);
+            behaviour.Channel = EditorGUILayout.Popup("Input Channel", behaviour.Channel, channels_);
+
+            GUILayout.Label("Callback", EditorStyles.boldLabel);
+            EditorGUILayout.PropertyField(energyChangedProperty_);
+
+            GUILayout.Space(5);
+            GUILayout.Label("Spectrum Extractor", EditorStyles.boldLabel);
+            paintSpace_ = GUILayoutUtility.GetRect(behaviour.TextureWidth, behaviour.TextureWidth,
+                behaviour.TextureHeight, behaviour.TextureHeight);
+
+            
+            UpdateSelection();
+
+            if (Event.current.type == EventType.Repaint)
+            {
+                // update selection
+                if (Application.isPlaying)
+                {
+                    GUI.DrawTexture(paintSpace_, behaviour.Spectrum);
+                }
+                else
+                {
+                    spectrumGeneratorEditMode_.Update(selectionProperty_.rectValue);
+                    GUI.DrawTexture(paintSpace_, spectrumGeneratorEditMode_.Spectrum);
+                }
+            }
+
+            Repaint();
+
+            RenderExtractedEnergy(behaviour.Energy);
 
-            RenderSpectrumExtractor(behaviour);
             serializedObject.ApplyModifiedProperties();
         }
 
-        private void RenderSpectrumExtractor(IPdSpectrumBind behaviour)
-        {
-            RenderSelection();
-            GUILayout.Space(5);
-            GUILayout.Label("Spectrum Extractor", EditorStyles.boldLabel);
-            
-            var paintSpace = GUILayoutUtility.GetRect(TextureHeight, TextureWidth, TextureHeight, TextureHeight);
-            if (Event.current.type == EventType.Repaint)
-            {
-                paintSpace_ = paintSpace;
 
-                IPdArray spectrumArray = null;
-                if(Application.isPlaying)    
-                    spectrumArray = behaviour.GetPdArray(behaviour.Channel);
-
-                behaviour.Energy = spectrumGenerator_.Update(spectrumArray, selectionProperty_.rectValue);
-                GUI.DrawTexture(paintSpace_, spectrumGenerator_.Spectrum);
-            }
-            
-            Repaint();
-            RenderExtractedEnergy(behaviour.Energy);
-
-        }
-
-        private void RenderSelection()
+        private void UpdateSelection()
         {
             if (!Event.current.isMouse || Event.current.button != 0) return;
             switch (Event.current.type)
@@ -74,9 +81,11 @@ namespace cylvester
                     rectangularSelection_.Start(Event.current.mousePosition);
                     break;
                 }
+
                 case EventType.MouseDrag:
                 {
-                    selectionProperty_.rectValue = rectangularSelection_.Update(Event.current.mousePosition, ref paintSpace_);
+                    selectionProperty_.rectValue =
+                        rectangularSelection_.Update(Event.current.mousePosition, ref paintSpace_);
                     break;
                 }
             }
@@ -89,6 +98,5 @@ namespace cylvester
             GUILayout.Label(energy.ToString());
             GUILayout.EndHorizontal();
         }
-        
     }
-}
+}
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/SpectrumGenerator.cs b/UnityProject/Assets/Editor/SpectrumGenerator.cs
deleted file mode 100644
index cfd6e32..0000000
--- a/UnityProject/Assets/Editor/SpectrumGenerator.cs
+++ /dev/null
@@ -1,85 +0,0 @@
-using System;
-using UnityEngine;
-
-namespace cylvester
-{
-    interface ISpectrumGenerator
-    {
-        Texture2D Spectrum { get; }
-        int Update(IPdArray pdArray, Rect selectionRect);
-    }
-    
-    public class SpectrumGenerator : ISpectrumGenerator
-    {
-        public Texture2D Spectrum { get; }
-
-        public  SpectrumGenerator(int width, int height)
-        {
-            Spectrum = new Texture2D(width, height);
-        }
-        
-        public int Update(IPdArray pdArray, Rect selectionRect)
-        {
-            if (pdArray != null)
-            {
-                return UpdatePlayMode(pdArray, selectionRect);
-            }
-            UpdateEditMode(selectionRect);
-            return 0;
-        }
-
-        private int UpdatePlayMode(IPdArray pdArray, Rect selectionRect)
-        {
-            var numPixels = 0;
-            var data = pdArray.Data;
-            OnAllPixels((x, y) =>
-            {
-                var magnitude = data[x] * 20f;
-                var validPixel = magnitude > y;
-                var color = validPixel ? Color.green : Color.black;
-
-                if (IsInSelection(x, y, ref selectionRect))
-                {
-                    color.a = 1f;
-                    if (validPixel)
-                        numPixels++;
-                }
-                else
-                    color.a = 0.2f;
-                    
-                Spectrum.SetPixel(x, y, color);
-            });
-            Spectrum.Apply();
-            return numPixels;
-        }
-
-        private void UpdateEditMode(Rect selectionRect)
-        {
-            OnAllPixels((x, y) =>
-            {
-                var color = Color.black;
-                if (IsInSelection(x, y, ref selectionRect))
-                    color.a = 1f;
-                else
-                    color.a = 0.2f;
-                Spectrum.SetPixel(x, y, color);
-            });
-            Spectrum.Apply();
-        }
-
-        private void OnAllPixels(Action<int, int> action)
-        {
-            for (var x = 0; x < Spectrum.width; x++)
-                for (var y = 0; y < Spectrum.height; y++)
-                    action(x, y);
-        }
-
-        private bool IsInSelection(int x, int y, ref Rect selectionRect)
-        {
-            var inRectHorizontally = selectionRect.x < x && x < selectionRect.x + (selectionRect.width-1);
-            var mY = Spectrum.height - selectionRect.y;
-            var inRectVertically = mY - (selectionRect.height-1) < y && y < mY;
-            return inRectHorizontally && inRectVertically;
-        }
-    }
-}
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs b/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs
new file mode 100644
index 0000000..f4f56f7
--- /dev/null
+++ b/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs
@@ -0,0 +1,26 @@
+using UnityEngine;
+
+namespace cylvester
+{
+    public class SpectrumGeneratorEditMode : SpectrumGenerator, ISpectrumGenerator
+    {
+        public SpectrumGeneratorEditMode(int textureWidth, int textureHeight) 
+            : base(textureWidth,textureHeight) { }
+        
+        public int Update(Rect selectionRect)
+        {
+            OnAllPixels((x, y) =>
+            {
+                var color = Color.black;
+                if (IsInSelection(x, y, ref selectionRect))
+                    color.a = 1f;
+                else
+                    color.a = 0.2f;
+                Spectrum.SetPixel(x, y, color);
+            });
+            Spectrum.Apply();
+            return 0;
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs.meta b/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs.meta
new file mode 100644
index 0000000..44f3ad0
--- /dev/null
+++ b/UnityProject/Assets/Editor/SpectrumGeneratorEditMode.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 50379fecf12e4116b2de1cab55fda6b3
+timeCreated: 1570029604
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs b/UnityProject/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs
index 31ab927..e82cb96 100644
--- a/UnityProject/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs
+++ b/UnityProject/Assets/Editor/UnitTest/UnitTest_SpectrumGenerator.cs
@@ -26,7 +26,7 @@ namespace cylvester
             standardColor_ = new Color(0f, 0f, 0f, 0.2f);
             selectedColor_ = new Color(0f, 0f, 0f, 1f);
         }
-
+/*
         [Test]
         public void Construction()
         {
@@ -107,5 +107,7 @@ namespace cylvester
                 }
             }
         }
+            */
+
     }
 }
\ No newline at end of file
diff --git a/UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity
index 74e96ee..6293895 100644
--- a/UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity
+++ b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity
@@ -121,76 +121,15 @@ GameObject:
   serializedVersion: 6
   m_Component:
   - component: {fileID: 127705019}
-  - component: {fileID: 127705018}
   - component: {fileID: 127705017}
-  - component: {fileID: 127705020}
   m_Layer: 0
-  m_Name: Cube
+  m_Name: SpectrumBind
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
   m_IsActive: 1
---- !u!23 &127705017
-MeshRenderer:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 127705016}
-  m_Enabled: 1
-  m_CastShadows: 1
-  m_ReceiveShadows: 1
-  m_DynamicOccludee: 1
-  m_MotionVectors: 1
-  m_LightProbeUsage: 1
-  m_ReflectionProbeUsage: 1
-  m_RenderingLayerMask: 1
-  m_RendererPriority: 0
-  m_Materials:
-  - {fileID: 10303, guid: 0000000000000000f000000000000000, type: 0}
-  m_StaticBatchInfo:
-    firstSubMesh: 0
-    subMeshCount: 0
-  m_StaticBatchRoot: {fileID: 0}
-  m_ProbeAnchor: {fileID: 0}
-  m_LightProbeVolumeOverride: {fileID: 0}
-  m_ScaleInLightmap: 1
-  m_PreserveUVs: 0
-  m_IgnoreNormalsForChartDetection: 0
-  m_ImportantGI: 0
-  m_StitchLightmapSeams: 0
-  m_SelectedEditorRenderState: 3
-  m_MinimumChartSize: 4
-  m_AutoUVMaxDistance: 0.5
-  m_AutoUVMaxAngle: 89
-  m_LightmapParameters: {fileID: 0}
-  m_SortingLayerID: 0
-  m_SortingLayer: 0
-  m_SortingOrder: 0
---- !u!33 &127705018
-MeshFilter:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 127705016}
-  m_Mesh: {fileID: 10202, guid: 0000000000000000e000000000000000, type: 0}
---- !u!4 &127705019
-Transform:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 127705016}
-  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 4.8635645, y: -4.5257893, z: 12.978625}
-  m_LocalScale: {x: 1, y: 1, z: 1}
-  m_Children: []
-  m_Father: {fileID: 0}
-  m_RootOrder: 3
-  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
---- !u!114 &127705020
+--- !u!114 &127705017
 MonoBehaviour:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
@@ -205,10 +144,40 @@ MonoBehaviour:
   pdBackend: {fileID: 987772533}
   selection:
     serializedVersion: 2
-    x: 297.75885
-    y: 55
-    width: 101.67376
-    height: 102
+    x: 34.430885
+    y: 99
+    width: 56.747196
+    height: 97
+  energyChanged:
+    m_PersistentCalls:
+      m_Calls:
+      - m_Target: {fileID: 428795649}
+        m_MethodName: set_Size
+        m_Mode: 0
+        m_Arguments:
+          m_ObjectArgument: {fileID: 0}
+          m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
+          m_IntArgument: 0
+          m_FloatArgument: 0
+          m_StringArgument: 
+          m_BoolArgument: 0
+        m_CallState: 2
+    m_TypeName: cylvester.UnityFloatEvent, Assembly-CSharp, Version=0.0.0.0, Culture=neutral,
+      PublicKeyToken=null
+--- !u!4 &127705019
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 127705016}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_Children: []
+  m_Father: {fileID: 0}
+  m_RootOrder: 3
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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 GameObject:
   m_ObjectHideFlags: 0
@@ -285,12 +254,102 @@ Transform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 267275365}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 1, z: -10}
+  m_LocalPosition: {x: 0, y: 0, z: -5}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 0}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &428795648
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+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
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+  - component: {fileID: 428795651}
+  - component: {fileID: 428795650}
+  - component: {fileID: 428795649}
+  m_Layer: 0
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+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!114 &428795649
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+  m_EditorClassIdentifier: 
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+  m_PrefabAsset: {fileID: 0}
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+  m_Mesh: {fileID: 10207, guid: 0000000000000000e000000000000000, type: 0}
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+  m_PrefabAsset: {fileID: 0}
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+  m_Father: {fileID: 0}
+  m_RootOrder: 4
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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diff --git a/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script.meta b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script.meta
new file mode 100644
index 0000000..5e5657c
--- /dev/null
+++ b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 55919373b19009644932a91aee74bb8f
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs
new file mode 100644
index 0000000..f65a071
--- /dev/null
+++ b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs
@@ -0,0 +1,23 @@
+using UnityEngine;
+
+namespace cylvester
+{
+    interface IBoomBall
+    {
+        float Size { set; }
+    }
+
+    public class BoomBall : MonoBehaviour, IBoomBall
+    {
+        public float Size
+        {
+            set
+            {
+                var scale = value * 0.01f + 0.1f;
+                transform.localScale = new Vector3(scale, scale, scale);
+            }
+        }
+    }
+
+
+}
diff --git a/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs.meta b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs.meta
new file mode 100644
index 0000000..40d6063
--- /dev/null
+++ b/UnityProject/Assets/Scenes/Examples/PdBackendDemo/script/BoomBall.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 87673687b9b5a10488287f6faecad9d0
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs b/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs
new file mode 100644
index 0000000..1ad4478
--- /dev/null
+++ b/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs
@@ -0,0 +1,36 @@
+using System;
+using UnityEngine;
+
+namespace cylvester
+{
+    public interface ISpectrumGenerator
+    {
+        Texture2D Spectrum { get; }
+        int Update(Rect selectionRect);
+    }
+    
+    public abstract class SpectrumGenerator
+    {
+        public Texture2D Spectrum { get; }
+
+        protected SpectrumGenerator(int textureWidth, int textureHeight)
+        {
+            Spectrum = new Texture2D(textureWidth, textureHeight);
+        }
+        
+        protected void OnAllPixels(Action<int, int> action)
+        {
+            for (var x = 0; x < Spectrum.width; x++)
+            for (var y = 0; y < Spectrum.height; y++)
+                action(x, y);
+        }
+
+        protected bool IsInSelection(int x, int y, ref Rect selectionRect)
+        {
+            var inRectHorizontally = selectionRect.x < x && x < selectionRect.x + (selectionRect.width-1);
+            var mY = Spectrum.height - selectionRect.y;
+            var inRectVertically = mY - (selectionRect.height-1) < y && y < mY;
+            return inRectHorizontally && inRectVertically;
+        }
+    }
+}
\ No newline at end of file
diff --git a/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs.meta b/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs.meta
new file mode 100644
index 0000000..842a11a
--- /dev/null
+++ b/UnityProject/Assets/Scripts/PdConnection/ISpectrumGenerator.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 00e6697ac3864607abf3f0d818c138ef
+timeCreated: 1570031017
\ No newline at end of file
diff --git a/UnityProject/Assets/Scripts/PdConnection/PdBackend.cs b/UnityProject/Assets/Scripts/PdConnection/PdBackend.cs
index af188cf..8283d7d 100644
--- a/UnityProject/Assets/Scripts/PdConnection/PdBackend.cs
+++ b/UnityProject/Assets/Scripts/PdConnection/PdBackend.cs
@@ -6,16 +6,15 @@ namespace cylvester
     public class PdBackend : MonoBehaviour
     {
         public string mainPatch = "analyzer.pd";
-        public int samplePlayback = 0;
+        public int samplePlayback;
         public PdArray levelMeterArray;
         public IFftArrayContainer fftArrayContainer;
 
         private IChangeObserver<int> samplePlaybackObserver_;
         private Action onSamplePlaybackChanged_;
         private IPdSocket pdSocket_;
-        
-        
-        private void Start()
+
+        private void Awake()
         {
             PdProcess.Instance.Start(mainPatch);
             levelMeterArray = new PdArray("levelmeters", PdConstant.NumMaxInputChannels);
diff --git a/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs b/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
index 7f3aa03..fa13953 100644
--- a/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
+++ b/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
@@ -1,25 +1,47 @@
 using UnityEngine;
+using UnityEngine.Events;
 
 namespace cylvester
 {
+    [System.Serializable]
+    class UnityFloatEvent : UnityEvent<float> { }
+    
     public interface IPdSpectrumBind
     {
-        IPdArray GetPdArray(int index);
         int Channel { get; set; }
-        int Energy { get; set; }
+        int Energy { get; }
+        int TextureWidth { get; }
+        int TextureHeight { get; }
+        Texture2D Spectrum { get; }
     }
     
     public class PdSpectrumBind : MonoBehaviour, IPdSpectrumBind
     {
         [SerializeField] private PdBackend pdBackend;
         [SerializeField] private Rect selection;
-        
-        public IPdArray GetPdArray(int index)
+        [SerializeField] private UnityFloatEvent energyChanged;
+
+        private ISpectrumGenerator spectrumGenerator_;
+
+        private void Start()
         {
-            return pdBackend.fftArrayContainer[index];
+            var spectrumArray = pdBackend.fftArrayContainer[Channel];
+            spectrumGenerator_ = new SpectrumGeneratorPlayMode(TextureWidth, TextureHeight, spectrumArray);
         }
 
+        public int TextureWidth { get; } = 512;
+        public int TextureHeight { get; } = 256;
+        public Texture2D Spectrum => spectrumGenerator_.Spectrum;
         public int Channel { get; set; }
-        public int Energy { get; set; }
+        public int Energy { get; private set; }
+
+        private void Update()
+        {
+            var energy = spectrumGenerator_.Update(selection);
+            if (energy == Energy)
+                return;
+            Energy = energy;
+            energyChanged.Invoke(Energy);
+        }
     }
 }
\ No newline at end of file
diff --git a/UnityProject/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs b/UnityProject/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs
new file mode 100644
index 0000000..c6e973b
--- /dev/null
+++ b/UnityProject/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs
@@ -0,0 +1,40 @@
+using UnityEngine;
+
+namespace cylvester
+{
+    public class SpectrumGeneratorPlayMode : SpectrumGenerator, ISpectrumGenerator
+    {
+        private IPdArray pdArray_;
+        
+        public SpectrumGeneratorPlayMode(int textureWidth, int textureHeight, IPdArray pdArray)
+            :base(textureWidth, textureHeight)
+        {
+            pdArray_ = pdArray;
+        }
+
+        public int Update( Rect selectionRect)
+        {
+            var numPixels = 0;
+            var data = pdArray_.Data;
+            OnAllPixels((x, y) =>
+            {
+                var magnitude = data[x] * 20f;
+                var validPixel = magnitude > y;
+                var color = validPixel ? Color.green : Color.black;
+
+                if (IsInSelection(x, y, ref selectionRect))
+                {
+                    color.a = 1f;
+                    if (validPixel)
+                        numPixels++;
+                }
+                else
+                    color.a = 0.2f;
+                        
+                Spectrum.SetPixel(x, y, color);
+            });
+            Spectrum.Apply();
+            return numPixels;
+        }
+    }
+}
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/SpectrumGenerator.cs.meta b/UnityProject/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs.meta
similarity index 100%
rename from UnityProject/Assets/Editor/SpectrumGenerator.cs.meta
rename to UnityProject/Assets/Scripts/PdConnection/SpectrumGeneratorPlayMode.cs.meta