diff --git a/.gitmodules b/.gitmodules
index 451fac4f6..e554c886a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,9 @@
-[submodule "binding/unity/Assets/Rhino/VoiceProcessor"]
-	path = binding/unity/Assets/Rhino/VoiceProcessor
+[submodule "binding/unity/VoiceProcessor"]
+	path = binding/unity/VoiceProcessor
 	url = ../unity-voice-processor.git
 [submodule "demo/c/dr_libs"]
 	path = demo/c/dr_libs
 	url = ../../mackron/dr_libs.git
 [submodule "demo/c/pvrecorder"]
 	path = demo/c/pvrecorder
-	url = ../pvrecorder.git
\ No newline at end of file
+	url = ../pvrecorder.git
diff --git a/binding/unity/Assets/Rhino/RhinoManager.cs b/binding/unity/Assets/Rhino/RhinoManager.cs
index b5e313a47..ace62f7b0 100644
--- a/binding/unity/Assets/Rhino/RhinoManager.cs
+++ b/binding/unity/Assets/Rhino/RhinoManager.cs
@@ -19,7 +19,6 @@ namespace Pv.Unity
 
     public class RhinoManager
     {
-        private VoiceProcessor _voiceProcessor;
         private Rhino _rhino;
         private Action<Inference> _inferenceCallback;
         private Action<RhinoException> _processErrorCallback;
@@ -69,26 +68,29 @@ private RhinoManager(Rhino rhino, Action<Inference> inferenceCallback, Action<Rh
             _inferenceCallback = inferenceCallback;
             _processErrorCallback = processErrorCallback;
 
-            _voiceProcessor = VoiceProcessor.Instance;
-            _voiceProcessor.OnFrameCaptured += OnFrameCaptured;
+            VoiceProcessor.Instance.AddFrameListener(OnFrameCaptured);
         }
 
         /// <summary>
         /// Action to catch audio frames as voice processor produces them
         /// </summary>
-        /// <param name="pcm">Frame of pcm audio</param>
-        private void OnFrameCaptured(short[] pcm)
+        /// <param name="frame">Frame of audio</param>
+        private void OnFrameCaptured(short[] frame)
         {
             try
             {
-                bool _isFinalized = _rhino.Process(pcm);
+                bool _isFinalized = _rhino.Process(frame);
                 if (_isFinalized)
                 {
                     Inference inference = _rhino.GetInference();
                     if (_inferenceCallback != null)
                         _inferenceCallback.Invoke(inference);
 
-                    _voiceProcessor.StopRecording();
+                    VoiceProcessor.Instance.RemoveFrameListener(OnFrameCaptured);
+                    if (VoiceProcessor.Instance.NumFrameListeners == 0)
+                    {
+                        VoiceProcessor.Instance.StopRecording();
+                    }
                 }
             }
             catch (RhinoException ex)
@@ -104,7 +106,7 @@ private void OnFrameCaptured(short[] pcm)
         /// Checks to see whether RhinoManager is capturing audio or not
         /// </summary>
         /// <returns>whether RhinoManager  is capturing audio or not</returns>
-        public bool IsRecording => _voiceProcessor.IsRecording;
+        public bool IsRecording => VoiceProcessor.Instance.IsRecording;
 
         /// <summary>
         /// Checks to see whether there are any audio capture devices available
@@ -112,8 +114,8 @@ private void OnFrameCaptured(short[] pcm)
         /// <returns>whether there are any audio capture devices available</returns>
         public bool IsAudioDeviceAvailable()
         {
-            _voiceProcessor.UpdateDevices();
-            return _voiceProcessor.CurrentDeviceIndex >= 0;
+            VoiceProcessor.Instance.UpdateDevices();
+            return VoiceProcessor.Instance.CurrentDeviceIndex >= 0;
         }
 
         /// <summary>
@@ -121,11 +123,11 @@ public bool IsAudioDeviceAvailable()
         /// </summary>
         public void Process()
         {
-            if (_rhino == null || _voiceProcessor == null)
+            if (_rhino == null)
             {
                 throw new RhinoInvalidStateException("Cannot start RhinoManager - resources have already been released");
             }
-            _voiceProcessor.StartRecording(_rhino.SampleRate, _rhino.FrameLength);
+            VoiceProcessor.Instance.StartRecording(_rhino.FrameLength, _rhino.SampleRate);
         }
 
         /// <summary>
@@ -133,19 +135,14 @@ public void Process()
         /// </summary>
         public void Delete()
         {
-            if (_voiceProcessor != null)
+            if (_rhino != null)
             {
-                if (_voiceProcessor.IsRecording)
+                VoiceProcessor.Instance.RemoveFrameListener(OnFrameCaptured);
+                if (VoiceProcessor.Instance.NumFrameListeners == 0)
                 {
-                    _voiceProcessor.StopRecording();
+                    VoiceProcessor.Instance.StopRecording();
                 }
 
-                _voiceProcessor.OnFrameCaptured -= OnFrameCaptured;
-                _voiceProcessor = null;
-            }
-
-            if (_rhino != null)
-            {
                 _rhino.Dispose();
                 _rhino = null;
             }
diff --git a/binding/unity/Assets/Rhino/VoiceProcessor b/binding/unity/Assets/Rhino/VoiceProcessor
deleted file mode 160000
index c7ece44be..000000000
--- a/binding/unity/Assets/Rhino/VoiceProcessor
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c7ece44be8f1a6c6466863c5241e750be0e334f2
diff --git a/binding/unity/Assets/Rhino/VoiceProcessor.meta b/binding/unity/Assets/Rhino/VoiceProcessor.meta
index 0310e4431..f1b6221f2 100644
--- a/binding/unity/Assets/Rhino/VoiceProcessor.meta
+++ b/binding/unity/Assets/Rhino/VoiceProcessor.meta
@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 48ca1db7d1fcc1c41a3cd516ff802443
+guid: b9d0c217c5fff9d89a02b8345b3fdba5
 folderAsset: yes
 DefaultImporter:
   externalObjects: {}
diff --git a/binding/unity/Assets/StreamingAssets/test.meta b/binding/unity/Assets/StreamingAssets/test.meta
deleted file mode 100644
index 37eafb432..000000000
--- a/binding/unity/Assets/StreamingAssets/test.meta
+++ /dev/null
@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: 47e544f7c76df0f0bacf3b82f16c6846
-folderAsset: yes
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/binding/unity/README.md b/binding/unity/README.md
index 295f95b0b..f0bc8ae5b 100644
--- a/binding/unity/README.md
+++ b/binding/unity/README.md
@@ -23,7 +23,7 @@ Rhino is:
 
 ## Compatibility
 
-[Rhino unity package](./rhino-2.2.1.unitypackage) is for running Rhino on **Unity 2017.4+** on the following platforms:
+[Rhino unity package](./rhino-2.2.2.unitypackage) is for running Rhino on **Unity 2017.4+** on the following platforms:
 
 - Android 4.4+ (API 19+) (ARM only)
 - iOS 9.0+
@@ -31,11 +31,11 @@ Rhino is:
 - macOS (x86_64)
 - Linux (x86_64)
 
-For running Rhino on **macOS m1 (arm64)**, use the [Apple silicon](./rhino-2.2.1-Apple-silicon.unitypackage) version on **Unity 2021.2+**.
+For running Rhino on **macOS m1 (arm64)**, use the [Apple silicon](./rhino-2.2.2-Apple-silicon.unitypackage) version on **Unity 2021.2+**.
 
 ## Installation
 
-The easiest way to install the Rhino Unity SDK is to import the [Rhino Unity Package](./rhino-2.2.1.unitypackage) into your Unity project by either dropping it into the Unity editor or going to _Assets>Import Package>Custom Package..._
+The easiest way to install the Rhino Unity SDK is to import the [Rhino Unity Package](./rhino-2.2.2.unitypackage) into your Unity project by either dropping it into the Unity editor or going to _Assets>Import Package>Custom Package..._
 
 **NOTE:** On macOS, the Rhino library may get flagged as having come from an unverified source if you've downloaded the  `.unitypackage` directly from github. This should only come up when running your project in the Editor. To disable this warning, go to Security & Preferences and choose to allow pv_rhino.dylib to run.
 
diff --git a/binding/unity/VoiceProcessor b/binding/unity/VoiceProcessor
new file mode 160000
index 000000000..c7e647434
--- /dev/null
+++ b/binding/unity/VoiceProcessor
@@ -0,0 +1 @@
+Subproject commit c7e647434905f330e8d73c92ae3a25d169374567
diff --git a/binding/unity/copy.sh b/binding/unity/copy.sh
index 41cb4b691..af4805727 100755
--- a/binding/unity/copy.sh
+++ b/binding/unity/copy.sh
@@ -20,6 +20,13 @@ cp ../../lib/windows/amd64/libpv_rhino.dll ./Assets/Rhino/Plugins/windows/amd64/
 echo "Copying Rhino common lib..."
 cp ../../lib/common/rhino_params.pv ./Assets/StreamingAssets/rhino_params.pv
 
+echo "Copying Voice Processor files..."
+if [ ! -d "./Assets/Rhino/VoiceProcessor" ]
+then
+    mkdir -p ./Assets/Rhino/VoiceProcessor
+fi
+cp -rp VoiceProcessor/Assets/UnityVoiceProcessor/*.cs ./Assets/Rhino/VoiceProcessor
+
 echo "Copying demo files..."
 if [ ! -d "./Assets/Rhino/Demo" ]
 then
diff --git a/binding/unity/rhino-2.2.1-Apple-silicon.unitypackage b/binding/unity/rhino-2.2.1-Apple-silicon.unitypackage
deleted file mode 100644
index 9a3e45e6b..000000000
Binary files a/binding/unity/rhino-2.2.1-Apple-silicon.unitypackage and /dev/null differ
diff --git a/binding/unity/rhino-2.2.1.unitypackage b/binding/unity/rhino-2.2.1.unitypackage
deleted file mode 100644
index 7b3982054..000000000
Binary files a/binding/unity/rhino-2.2.1.unitypackage and /dev/null differ
diff --git a/binding/unity/rhino-2.2.2-Apple-silicon.unitypackage b/binding/unity/rhino-2.2.2-Apple-silicon.unitypackage
new file mode 100644
index 000000000..3b6863ec7
Binary files /dev/null and b/binding/unity/rhino-2.2.2-Apple-silicon.unitypackage differ
diff --git a/binding/unity/rhino-2.2.2.unitypackage b/binding/unity/rhino-2.2.2.unitypackage
new file mode 100644
index 000000000..c82b515a9
Binary files /dev/null and b/binding/unity/rhino-2.2.2.unitypackage differ