Python Snippets
===============

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Set speaker volume
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In your virtual environment, ``pip install pyalsaaudio``.

.. code-block:: python

    import alsaaudio
    
    m = alsaaudio.Mixer(control="MVC1", cardindex=0)
    vol = m.getvolume()
    vol = int(vol[0])
    
    newVol = vol + 3
    m.setvolume(newVol)


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Stream audio to Google ASR
--------------------------

In your virtual environment, ``pip install pyaudio``.

Follow examples on `Github <https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/speech/microphone/transcribe_streaming_infinite.py>`_.

You can configure what microphone to use by adding an ``input_device_index`` in ``self._audio_interface.open()``.

To list the available devices with indices, use the following code.

.. code-block:: python

    import pyaudio
    p = pyaudio.PyAudio()
    for i in range(p.get_device_count()):
        print(p.get_device_info_by_index(i))