Optional EngineSpecifies the engine (standard, neural,
long-form, or generative) for Amazon Polly
to use when processing input text for speech synthesis. Provide an engine
that is supported by the voice you select. If you don't provide an engine,
the standard engine is selected by default. If a chosen voice isn't supported
by the standard engine, this will result in an error. For information on
Amazon Polly voices and which voices are available for each engine, see Available Voices.
Type: String
Valid Values: standard | neural |
long-form | generative
Required: Yes
Optional LanguageOptional language code for the Synthesize Speech request. This is only necessary if using a bilingual voice, such as Aditi, which can be used for either Indian English (en-IN) or Hindi (hi-IN).
If a bilingual voice is used and no language code is specified, Amazon Polly
uses the default language of the bilingual voice. The default language for
any voice is the one returned by the DescribeVoices operation for the LanguageCode
parameter. For example, if no language code is specified, Aditi will use
Indian English rather than Hindi.
Optional LexiconList of one or more pronunciation lexicon names you want the service to apply during synthesis. Lexicons are applied only if the language of the lexicon is the same as the language of the voice. For information about storing lexicons, see PutLexicon.
The format in which the returned output will be encoded. For audio stream, this will be mp3, ogg_vorbis, or pcm. For speech marks, this will be json.
When pcm is used, the content returned is audio/pcm in a signed 16-bit, 1 channel (mono), little-endian format.
Optional SampleThe audio frequency specified in Hz.
The valid values for mp3 and ogg_vorbis are "8000", "16000", "22050", and "24000". The default value for standard voices is "22050". The default value for neural voices is "24000". The default value for long-form voices is "24000". The default value for generative voices is "24000".
Valid values for pcm are "8000" and "16000" The default value is "16000".
Optional SpeechThe type of speech marks returned for the input text.
Input text to synthesize. If you specify ssml as the
TextType, follow the SSML format for the input text.
Optional TextSpecifies whether the input text is plain text or SSML. The default value is plain text. For more information, see Using SSML.
Voice ID to use for the synthesis. You can get a list of available voice IDs by calling the DescribeVoices operation.
The input for SynthesizeSpeechCommand.