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Function: convertPcmToMulaw8k()

convertPcmToMulaw8k(pcmBuffer, sampleRate): Buffer

Defined in: packages/agentos/src/voice/telephony-audio.ts:69

Convert PCM audio buffer to mu-law 8kHz mono format for telephony.

Parameters​

pcmBuffer​

Buffer

Raw PCM audio data (signed 16-bit little-endian).

sampleRate​

number

Sample rate of the input PCM data.

Returns​

Buffer

Buffer of mu-law encoded audio at 8kHz mono.

Example​

// TTS returns 24kHz PCM
const ttsAudio = await ttsProvider.synthesize("Hello");
const phoneAudio = convertPcmToMulaw8k(ttsAudio, 24000);
mediaStream.sendAudio(streamSid, phoneAudio);