Added

• Added GladiaSTTService. https://docs.gladia.io/chapters/speech-to-text-api/pages/live-speech-recognition

• Added XTTSService. This is a local Text-To-Speech service. https://github.com/coqui-ai/TTS

• Added UserIdleProcessor. This processor can be used to wait for any interaction with the user. If the user doesn't say anything within a given timeout a provided callback is called.

• Added IdleFrameProcessor. This processor can be used to wait for frames within a given timeout. If no frame is received within the timeout a provided callback is called.

• Added new frame BotSpeakingFrame. This frame will be continuously pushed upstream while the bot is talking.

• It is now possible to specify a Silero VAD version when using SileroVADAnalyzer or SileroVAD.

• Added AysncFrameProcessor and AsyncAIService. Some services like DeepgramSTTService need to process things asynchronously. For example, audio is sent to Deepgram but transcriptions are not returned immediately. In these cases we still require all frames (except system frames) to be pushed downstream from a single task. That's what AsyncFrameProcessor is for. It creates a task and all frames should be pushed from that task. So, whenever a new Deepgram transcription is ready that transcription will also be pushed from this internal task.

• The MetricsFrame now includes processing metrics if metrics are enabled. The processing metrics indicate the time a processor needs to generate all its output. Note that not all processors generate these kind of metrics.

Changed

• WhisperSTTService model can now also be a string.

• Added missing * keyword separators in services.

Fixed

• WebsocketServerTransport doesn't try to send frames anymore if serializers returns None.

• Fixed an issue where exceptions that occurred inside frame processors were being swallowed and not displayed.

• Fixed an issue in FastAPIWebsocketTransport where it would still try to send data to the websocket after being closed.

Other

• Added Fly.io deployment example in examples/deployment/flyio-example.

• Added new 17-detect-user-idle.py example that shows how to use the new UserIdleProcessor.