complete animating mouth scale based on amplitude timeline

Assets/_PROJECT/Prefabs/ModelGeneration/Characters/CafeWaiterNPC.prefab

@@ -196,15 +196,20 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 8a215290e2c2e1d43983b61cb160e241, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  mouthTransform: {fileID: 5759406807219530703}
-  mouthScalingMultiplier: 2.5
-  mouthMovementDuration: 0.25
+  voicelinesFolder: CharacterVoicelines
+  characterSpecificFolder: Chef
   voiceLineKeys:
-  - Chef/Ulrich_Serve
-  - Chef/Ulrich_Get_Correctly
-  - Chef/Ulrich_Excellent
-  - Chef/Ulrich_Terribly_Sorry_1
-  - Chef/Ulrich_Enjoy
+  - Ulrich_Serve
+  - Ulrich_Get_Correctly
+  - Ulrich_Excellent
+  - Ulrich_Terribly_Sorry_1
+  - Ulrich_Enjoy
+  mouth: {fileID: 5759406807219530703}
+  minScaleY: 0.3
+  maxScaleY: 1
+  gain: 30
+  attack: 0.6
+  release: 0.2
   fmodWhisperBridge: {fileID: 0}
   notepadText: {fileID: 0}
   notepad: {fileID: 0}

Assets/_PROJECT/Scripts/ModeGeneration/NPCs/NPCController.cs

@@ -7,6 +7,9 @@ public abstract class NPCController : MonoBehaviour
 {
     protected Transform playerTransform;
 
+    [Header("Voiceline Amplitude Timeline Config")]
+    public string voicelinesFolder = "CharacterVoicelines";
+    public string characterSpecificFolder;
     public string[] voiceLineKeys;
 
 
@@ -20,17 +23,14 @@ public abstract class NPCController : MonoBehaviour
     public float attack = 0.6f;   // faster opening
     public float release = 0.2f;  // slower closing
 
-    [Header("Timeline Folder (StreamingAssets recommended)")]
-    public string timelineFolder = "CharacterVoicelines";
-
     private float[] rmsCurve;
     private EventInstance currentVoicelineEvent;
     private bool isSpeaking;
     private float smoothed;
 
-    private int sampleRate = 50;   // RMS samples per second (20ms windows)
     // If you change RMS window in Python, update this
-
+    private const float FRAME_DURATION = 0.02f;
+    private float sampleRate = 1f / FRAME_DURATION;   // RMS samples per second (20ms windows)
 
 
     // Start is called before the first frame update
@@ -62,7 +62,6 @@ public abstract class NPCController : MonoBehaviour
 
     private void AnimateMouth()
     {
-
         // get FMOD timeline position
         currentVoicelineEvent.getTimelinePosition(out int ms);
         float time = ms / 1000f;
@@ -88,6 +87,23 @@ public abstract class NPCController : MonoBehaviour
 
     }
 
+
+    private void StopSpeaking()
+    {
+        isSpeaking = false;
+        smoothed = minScaleY;
+
+        if (mouth != null)
+        {
+            var scale = mouth.localScale;
+            scale.y = minScaleY;
+            mouth.localScale = scale;
+        }
+
+        currentVoicelineEvent.release();
+    }
+
+
     private void OnTriggerEnter(Collider other)
     {
         if (other.gameObject.tag == "Player Head")
@@ -120,45 +136,28 @@ public abstract class NPCController : MonoBehaviour
         }
 
         string key = voiceLineKeys[voiceLineId];
-
         LoadCurve(key);  // load RMS data
-        Debug.Log("loaded timeline curve");
-
-        currentVoicelineEvent = AudioManager.Instance.PlayDialogue(key, gameObject);
 
+        currentVoicelineEvent = AudioManager.Instance.PlayDialogue(characterSpecificFolder + "/" + key, gameObject);
         if (!currentVoicelineEvent.isValid())
         {
             Debug.LogError("Failed to start dialogue event.");
             return;
         }
-
-        //isSpeaking = true;
+        isSpeaking = true;
 
         // Stop mouth on end
-        currentVoicelineEvent.setCallback((type, inst, param) =>
-        {
-            if (type == EVENT_CALLBACK_TYPE.STOPPED)
-            {
-                isSpeaking = false;
-                smoothed = minScaleY;
+        float voicelineDuration = rmsCurve.Length * FRAME_DURATION;
+        Invoke(nameof(StopSpeaking), voicelineDuration);
+    }
 
-                if (mouth != null)
-                {
-                    Vector3 s = mouth.localScale;
-                    s.y = minScaleY;
-                    mouth.localScale = s;
-                }
-            }
-            return FMOD.RESULT.OK;
-        });
-    }
 
     // ---------------------------
     //   Load RMS Timeline (.txt)
     // ---------------------------
     private void LoadCurve(string key)
     {
-        string folderPath = Path.Combine(Application.streamingAssetsPath, timelineFolder);
+        string folderPath = Path.Combine(Application.streamingAssetsPath, voicelinesFolder, characterSpecificFolder);
         string filePath = Path.Combine(folderPath, key + ".txt");
 
         if (!File.Exists(filePath))