PyAudio provides Python bindings for PortAudio, the cross-platform audio I/O library. With PyAudio, you can easily use Python to play and record audio on a variety of platforms. PyAudio is inspired by:
1.pyPortAudio/fastaudio: Python bindings for PortAudio v18 API.
2.tkSnack: cross-platform sound toolkit for Tcl/Tk and Python.
Note: stream_callback is called in a separate thread (from the main thread). Exceptions that occur in the stream_callback will:
1.print a traceback on standard error to aid debugging,
2.queue the exception to be thrown (at some point) in the main thread, and
3.return paAbort to PortAudio to stop the stream.
Note: Do not call Stream.read() or Stream.write() if using non-blocking operation.
See: PortAudio’s callback signature for additional details :