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fix: migrate from custom audio recorder to native AudioBuffer (#115)

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* fix: update to pipecat VM Detector

* fix: refactor to remove audio synchronizer

* feat: add speechmatics as STT
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Abhishek 2026-01-08 18:03:26 +05:30 • committed by GitHub
parent 31521008cf
commit edf0fa4fbc
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12 changed files with 193 additions and 591 deletions
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15
api/services/looptalk/orchestrator.py
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@ -245,7 +245,6 @@ class LoopTalkTestOrchestrator:
engine = pipeline_info["engine"]
task = pipeline_info["task"]
audio_buffer = pipeline_info["audio_buffer"]
audio_synchronizer = pipeline_info["audio_synchronizer"]
transcript = pipeline_info["transcript"]
assistant_context_aggregator = pipeline_info["assistant_context_aggregator"]
@ -255,7 +254,6 @@ class LoopTalkTestOrchestrator:
logger.debug(f"LoopTalk {role} client connected - initializing workflow")
# Start audio recording
await audio_buffer.start_recording()
await audio_synchronizer.start_recording()
await engine.initialize()
@transport.event_handler("on_client_disconnected")
@ -263,7 +261,6 @@ class LoopTalkTestOrchestrator:
logger.debug(f"LoopTalk {role} client disconnected")
# Stop audio recording
await audio_buffer.stop_recording()
await audio_synchronizer.stop_recording()
# Handle disconnect propagation - stop the other agent too
await self.session_manager.handle_agent_disconnect(
@ -274,11 +271,11 @@ class LoopTalkTestOrchestrator:
# Register custom audio and transcript handlers for LoopTalk
await self._register_looptalk_handlers(
audio_synchronizer, transcript, test_session_id, role
audio_buffer, transcript, test_session_id, role
)
async def _register_looptalk_handlers(
self, audio_synchronizer, transcript, test_session_id: int, role: str
self, audio_buffer, transcript, test_session_id: int, role: str
):
"""Register LoopTalk-specific handlers for audio and transcript recording"""
@ -288,9 +285,9 @@ class LoopTalkTestOrchestrator:
audio_metadata = {"sample_rate": None, "num_channels": None}
# Audio handler - writes directly to PCM file
@audio_synchronizer.event_handler("on_merged_audio")
async def on_merged_audio(_, pcm, sample_rate, num_channels):
if not pcm:
@audio_buffer.event_handler("on_audio_data")
async def on_audio_data(buffer, audio, sample_rate, num_channels):
if not audio:
return
# Store metadata on first write
@ -301,7 +298,7 @@ class LoopTalkTestOrchestrator:
# Append PCM data to temporary file
try:
with open(paths["temp_audio"], "ab") as f:
f.write(pcm)
f.write(audio)
except Exception as e:
logger.error(
f"Failed to write audio for {role} in session {test_session_id}: {e}"