Skip to main content
Voice format: Telnyx.Natural.<voice> Pre-built English voices backed by Rime Mist.

​
Voice Samples

VoiceGenderSample
Telnyx.Natural.allisonFemale
Telnyx.Natural.brookFemale

​
WebSocket

​
Query Parameters

wss://api.telnyx.com/v2/text-to-speech/speech?voice=Telnyx.Natural.allison&audio_format=mp3
ParameterTypeDefaultDescription
audio_formatstringmp3mp3, linear16.
sample_rateinteger240008000, 16000, 22050, 24000, 44100, 48000, 96000.

​
Voice Settings

Send in the init frame ({"text": " "}):
FieldTypeDefaultDescription
voice_speedfloat1.0Speech rate multiplier.
{
  "text": " ",
  "voice_settings": {
    "voice_speed": 1.2
  }
}

​
REST API

​
Fields

FieldTypeDefaultDescription
voice_speedfloat1.0Speech rate multiplier.
output_typestringbinary_outputbinary_output, base64_output, or audio_id.

​
Response

Default (binary_output): chunked audio bytes with Content-Type: audio/mpeg (or audio/wav, audio/pcm). With output_type: "base64_output": JSON with base64-encoded audio. With output_type: "audio_id": JSON with an audio_url for deferred retrieval.