fix safari

recipes/llm-voice-assistant/web/public/controller.js

@@ -127,7 +127,7 @@ window.onload = () => {
           }
         },
         onComplete: async () => {
-          if (streamCalls <= 3) {
+          if (streamCalls <= 2) {
             audioStream.play();
           }
           await audioStream.waitPlayback();

recipes/llm-voice-assistant/web/src/audio_stream.ts

@@ -12,6 +12,7 @@ class AudioStream {
     this._audioContext = new (window.AudioContext ||
       // @ts-ignore
       window.webKitAudioContext)({ sampleRate: sampleRate });
+    this._audioContext.resume();
 
     this._audioGain = this._audioContext.createGain();
     this._audioGain.gain.value = 1;
@@ -35,15 +36,15 @@ class AudioStream {
     streamSource.buffer = this._audioBuffers.shift() ?? null;
     streamSource.connect(this._audioGain);
 
+    streamSource.start();
+    this._isPlaying = true;
+
     streamSource.onended = (): void => {
       this._isPlaying = false;
       if (this._audioBuffers.length > 0) {
         this.play();
       }
     };
-
-    streamSource.start();
-    this._isPlaying = true;
   }
 
   public async waitPlayback(): Promise<void> {

recipes/llm-voice-assistant/web/src/main.ts

@@ -43,8 +43,8 @@ const init = async (
 
   const detectionCallback = async (detection: PorcupineDetection): Promise<void> => {
     if (detection.index === 0) {
-      await WebVoiceProcessor.unsubscribe(porcupine);
       await WebVoiceProcessor.subscribe(cheetah);
+      await WebVoiceProcessor.unsubscribe(porcupine);
       onDetection(detection);
     }
   };
@@ -114,9 +114,9 @@ const init = async (
       streamCallback: async token => {
         if (!stopPhrases.includes(token)) {
           onText(token);
-          await mutex.acquire();
+          const release = await mutex.acquire();
           const pcm = await stream.synthesize(token);
-          mutex.release();
+          release();
           synthesized++;
           if (pcm !== null) {
             onStream(pcm);