Ensure input stream is only tee'd when it's actually being used (#1088)

Author: lukasIO

.changeset/quiet-avocados-lie.md

@@ -0,0 +1,5 @@
+---
+"@livekit/agents": patch
+---
+
+Ensure input stream is only tee'd when it's actually being used

agents/src/voice/agent_activity.ts

@@ -500,16 +500,15 @@ export class AgentActivity implements RecognitionHooks {
     });
 
     this.audioStreamId = this.audioStream.addInputStream(audioStream);
-    const [realtimeAudioStream, recognitionAudioStream] = this.audioStream.stream
-      .pipeThrough(aecWarmupAudioFilter)
-      .tee();
 
-    if (this.realtimeSession) {
+    if (this.realtimeSession && this.audioRecognition) {
+      const [realtimeAudioStream, recognitionAudioStream] = this.audioStream.stream.tee();
       this.realtimeSession.setInputAudioStream(realtimeAudioStream);
-    }
-
-    if (this.audioRecognition) {
       this.audioRecognition.setInputAudioStream(recognitionAudioStream);
+    } else if (this.realtimeSession) {
+      this.realtimeSession.setInputAudioStream(this.audioStream.stream);
+    } else if (this.audioRecognition) {
+      this.audioRecognition.setInputAudioStream(this.audioStream.stream);
     }
   }