speechmatics-python provides a reference client for interfacing with the Speechmatics Realtime ASR API v2. A command line interface is also included for convenience.

To install from source:

$ git clone https://github.com/speechmatics/speechmatics-python
$ cd speechmatics-python && python setup.py install

# or

$ pip install -e git+https://github.com/speechmatics/speechmatics-python#egg=speechmatics-python

• Python 3.7+

• A normal real time session using a .wav file as the input audio

  # Point URL to the local instance of Speechmatics
  $ URL=ws://realtimeappliance.yourcompany:9000/v2
  
  $ speechmatics transcribe --url $URL --lang en --ssl-mode none example_audio.wav

• Show the messages that are going over the websocket connection

  $ speechmatics -v transcribe --url $URL --lang en --ssl-mode none example_audio.wav

• The CLI also accepts an audio stream on standard input; transcribe the piped input audio

  $ cat example_audio.wav | speechmatics transcribe --ssl-mode none --url $URL --lang en -

• Pipe audio directly from the microphone (example uses MacOS with ffmpeg)

  List available input devices with

  $ ffmpeg -f avfoundation -list_devices true -i ""

  There needs to be at least one available microphone attached to your computer. The command below gets the microphone input and pipes it to the transcriber. You may need to change the sample rate to match the sample rate that your machine records at. You may also need to replace :default with something like :0 or :1 if you want to use a specific microphone.

  $ ffmpeg -loglevel quiet -f avfoundation -i ":default" -f f32le -acodec pcm_f32le -ar 44100 - \
  >   | speechmatics transcribe --ssl-mode none --url $URL --raw pcm_f32le --sample-rate 44100 --lang en -

• Transcribe in real-time with partials (example uses Ubuntu with ALSA). In this mode, the transcription engine produces words instantly, which may get updated as additional context becomes available.

  List available input devices with

  $ cat /proc/asound/cards

  Record microphone audio and pipe to transcriber.

  $ ffmpeg -loglevel quiet -f alsa -i hw:0 -f f32le -acodec pcm_f32le -ar 44100 - \
      | speechmatics transcribe --ssl-mode none --url $URL --enable-partials --raw pcm_f32le --sample-rate 44100 --lang en -

Please see https://speechmatics.github.io/speechmatics-python/.

To install development dependencies and run tests

$ pip install -r requirements-dev.txt
$ make test

If you have any issues with this library or encounter any bugs then please get in touch with us at [email protected].

License: MIT