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When streaming audio to Gladia API, you can stream it either as binary frames or as JSON messages containing a base64-encoded chunk.

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Send audio chunks

There are two ways to stream audio:
  1. As binary WebSocket frames:
// `buffer` is a Node.js Buffer / Uint8Array with raw audio bytes
socket.send(buffer);
  1. As JSON, base64-encoding the audio chunk
socket.send(
	JSON.stringify({
		type: "audio_chunk",
		data: {
			chunk: buffer.toString("base64"),
		},
	})
);

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Tips

  • Keep chunks reasonably sized (≃ 100ms) for low latency.
  • Make sure your chunks are contiguous audio frames with the same format as configured during session initiation.
  • On recoverable disconnects, reconnect using the same url to continue streaming.