wav-stream-recorder

Records incoming streams to WAV files.

Useful when needing to concatenate WAV data streams into growing WAV files in the situation where each incoming message already has its own WAV/RIFF headers written. This wav-stream-recorder writes any given number of streams to respective WAV files (set by an id) by stripping the unncessary headers in each message, concatenating the audio data, and after a given timeout will rewrite the WAV/RIFF headers with the new total size.

timeout

There is a built in timeout (5 seconds) after which an incoming stream will be considered finished, and the WAV file will be finialized. Finalizing writes the update headers, and also appends a unique timestamp string to the end of the filename so the next incoming stream doesn't overwrite it.

example

// ... setup websocket first
var recorder = new WavStreamRecorder()

websocket.on('message', function (streamId, message) {
  recorder.appendRecording(streamId, message, __dirname + '/audio/' + streamId + '.wav')
})