Google open-sources Live Transcribe's speech engine

The company hopes doing so will let any developer deliver captions for long-form conversations. The source code is available now on GitHub. Google released Live Transcribe in February. The tool uses machine learning algorithms to turn audio into real-time captions. Unlike Android's upcoming Live Caption feature, Live Transcribe is a full-screen experience, uses your smartphone's microphone (or an external microphone), and relies on the Google Cloud Speech API.