May 25, 2024
Voiced by Polly

At present, we’re asserting the overall availability of the generative engine of Amazon Polly with three voices: Ruth and Matthew in American English and Amy in British English. The brand new generative engine was educated with publicly accessible and proprietary information and quite a lot of voices, languages, and types. It performs with the best precision to render context-dependent prosody, pausing, spelling, dialectal properties, international phrase pronunciation, and extra.

Amazon Polly is a machine studying (ML) service that converts textual content to lifelike speech, known as text-to-speech (TTS) know-how. Now, Amazon Polly contains high-quality, natural-sounding humanlike voices in dozens of languages, so you’ll be able to choose the perfect voice and distribute your speech-enabled purposes in lots of locales or nations.

With Amazon Polly, you’ll be able to choose numerous voice choices, together with neural, long-form, and generative voices, which ship ground-breaking enhancements in speech high quality and produce human-like, extremely expressive, and emotionally adept voices. You’ll be able to retailer speech output in commonplace codecs like MP3 or OGG, regulate the speech charge, pitch, or quantity with Speech Synthesis Markup Language (SSML) tags, and shortly ship lifelike voices and conversational consumer experiences with persistently quick response occasions.

What’s the brand new generative engine?
Amazon Polly now helps 4 voice engines: commonplace, neural, long-form, and generative voices.

Normal TTS voices, launched in 2016 use conventional concatenative synthesis. This technique strings collectively the phonemes of recorded speech, producing very natural-sounding synthesized speech. Nonetheless, the inevitable variations in speech and the strategies used to phase the waveforms restrict the standard of speech.

Neural TTS (NTTS) voices, launched in 2019, use a sequence-to-sequence neural community that converts a sequence of phonemes into spectrograms and a neural vocoder that converts the spectrograms right into a steady audio sign. The NTTS produces even greater high quality humanlike voices than its commonplace voices.

Lengthy-form voices, launched in 2023, are developed with cutting-edge deep studying TTS know-how and designed to captivate listeners’ consideration for longer content material, reminiscent of information articles, coaching supplies, or advertising movies.

In February 2024, Amazon scientists launched a brand new analysis TTS mannequin known as Big Adaptive Streamable TTS with Emergent abilities (BASE). With this know-how, the Amazon Polly generative engine is ready to create humanlike synthetically generated voices. You need to use these voices as a educated buyer assistant, a digital coach, or an skilled marketer.

Listed below are the brand new generative voices:

Title Locale Gender Language Pattern immediate NTTS voices
Generative voices
Ruth en_US Feminine English (US) Selma was mendacity on the bottom midway down the steps. 'Selma! Selma!' we shouted in panic.
Matthew en_US Male English (US) The guards had been standing exterior with a few of our neighbours, listening to a transistor radio. 'Any excellent news?' I requested. 'No, we're listening to the names of people that had been killed yesterday,' Bruno replied.
Amy en_GB Feminine English (British) What are you taking a look at?' he stated as he stood over me. They received off the bus and began looking the bags compartment. The strain on the bus was like a darkish, menacing cloud that hovered above us.

You’ll be able to select from these voice choices to fit your software and use case. To be taught extra concerning the generative engine, go to Generative voices within the AWS documentation.

Get began with utilizing generative voices
You’ll be able to entry the brand new voices utilizing the AWS Administration Console, AWS Command Line Interface (AWS CLI), or the AWS SDKs.

To get began, go to the Amazon Polly console within the US (N. Virginia) Area and select the Textual content-to-Speech menu within the left pane. If you choose the voice of Ruth or Matthew within the language of English, US or Amy in English, UK, you’ll be able to select the Generative engine. Enter your textual content and hearken to or obtain the generated voice output.

Utilizing the CLI, you’ll be able to checklist the voices that use the brand new generative engine:

$ aws polly describe-voices --output json --region us-east-1 
| jq -r '.Voices[] | choose(.SupportedEngines | index("generative")) | .Title'


Now, run the synthesize-speech CLI command to synthesize pattern textual content to an audio file (good day.mp3) with the parameters of generative engine and a supported voice ID.

$ aws polly synthesize-speech --output-format mp3 --region us-east-1 
  --text "Whats up. That is my first generative voices!" 
  --voice-id Matthew --engine generative good day.mp3

To be taught extra code examples utilizing AWS SDKs, go to Code and software examples within the AWS documentation. You need to use Java and Python code examples, software examples reminiscent of net purposes utilizing Java or Python, or iOS and Android purposes.

Now accessible
The brand new generative voices of Amazon Polly are actually accessible at the moment within the US East (N. Virginia) Area. You solely pay for what you utilize based mostly on the variety of characters of textual content that you just convert to speech. To be taught extra, go to our Amazon Polly Pricing web page.

Give new generative voices a attempt within the Amazon Polly console at the moment and ship suggestions to AWS re:Post for Amazon Polly or by your common AWS Help contacts.