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Overview

POST text and a voice to the TTS endpoint to receive a WAV audio response. Include your API key via the Authorization header.

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Endpoint

POST https://api.outspeed.com/v1/tts/

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Request Body

{
  "voice": "clark",
  "text": "Hello, world!",
  "stream": false
}
  • voice: the voice identifier.
    • Available voices: “linda”, “aria”, “kate”, “jasmine”, “emily”, “isabella”, “clark”
  • text: the text to synthesize
  • stream: set to true to stream audio chunks; false returns the full WAV

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Response

  • Content-Type: audio/pcm
  • Headers:
    • X-Sample-Rate: Sample rate (default: 24000)
    • X-Channels: Number of audio channels (default: 1)
    • X-Bit-Depth: Bit depth (default: 16)
  • Body: Raw PCM audio bytes (little-endian int16), 24kHz, mono. No WAV header is included. Wrap with a WAV header or convert with a tool like ffmpeg.
Authenticate with Authorization: Bearer <YOUR_OUTSPEED_API_KEY>.

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Examples (non-streaming)

curl \
  -X POST \
  'https://api.outspeed.com/v1/tts/' \
  -H 'Authorization: Bearer YOUR_OUTSPEED_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"voice":"clark","text":"Hello, world!","stream":false}' \
  --output tts.pcm

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Examples (streaming)

curl \
  -X POST \
  'https://api.outspeed.com/v1/tts/' \
  -H 'Authorization: Bearer YOUR_OUTSPEED_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"voice":"clark","text":"Hello, world!","stream":true}' \
  --no-buffer \
  --output tts.pcm