Optimizing for low latency

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Use streaming synthesis

Streaming synthesis via our WebSocket API is the fastest way to generate speech from text. It will return audio as soon as it is available, rather than wait for the entire audio to be generated. All of our client libraries support streaming synthesis as well.

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Output wav format instead of mp3

The wav format is faster to generate than mp3. The default output for speech synthesis in our SDKs and REST API is mp3, so you will need to explicitly pass in format=wav in your request to use wav format.