How can I extract the preceding audio (from microphone) as a buffer when silence is detected (JS)?

Question

I\'m using the Google Cloud API for Speech-to-text, with a NodeJS back-end. The app needs to be able to listen for voice commands, and transmit them to the back-end as a buf

Answer 1

The simplest approach would be to use .pause() and .resume(), .stop() methods of MediaRecorder() to allow user to start, pause, and stop recording audio captured utilizing navigator.mediaDevices.getUserMedia() and convert the resulting Blob to an ArrayBuffer, if that is what the api is expecting to be POSTed to server

plnkr https://plnkr.co/edit/7caWYMsvub90G6pwDdQp?p=preview