service · inferred from evidence
SynthesizeSpeech
An API within Amazon Polly for synthesizing speech from text.
- Polly long text: switch to the async task at 6000 characters
Synthesizing long-form audio with Polly: anything over 6000 characters (3000 billed) fails SynthesizeSpeech with TextLengthExceededException, so switch to StartSpeechSynthesisTask for documents and chapters.