How does Amazon Polly Works?
Amazon Polly converts text into natural-sounding speech. We select one of the speech synthesis methods, enter the text to be synthesised, select Neural Text-to-Speech (NTTS) or Standard TTS voices, and specify an audio output format. The provided text is then synthesised into a high-quality speech audio stream by Amazon Polly.
Input Text
We have to provide Amazon Polly with the text we want to synthesise, and it will return an audio stream. We can provide the data as plain text or in SSML (Speech Synthesis Markup Language). We can control many aspects of speech with SSML, including pronunciation, volume, pitch, and speech rate.
Available Voices
Amazon Polly comes in a variety of languages and voices. We can select from a variety of male and female voices for most languages. When starting a speech synthesis task, we can specify the voice ID, and Amazon Polly uses that voice to convert the text to speech. The synthesised speech is in the same language as the text, so Amazon Polly isn't a translation service.
Output Format
Amazon Polly can deliver a synthesised speech in a variety of formats. We can select the audio format that best suits our needs.
Advantages of Amazon Polly
The various advantages of Amazon Polly are:
High Quality
Amazon Polly synthesises superior natural speech with high pronunciation accuracy using both new neural TTS and best-in-class standard TTS technology.
Low Latency
Amazon Polly ensures quick responses, so it's good for low-latency use cases like dialogue systems.
Support a Diverse Range of Languages and Voices
Amazon Polly supports dozens of voice languages, with male and female voices available for the majority of them. Neural TTS supports eight US English voices and three British English voices.
Low Cost
Because Amazon Polly is a pay-per-use service, there are no upfront costs. We can start small and grow our application over time.
Cloud-Based Solution
TTS solutions necessitate a large amount of computing power, RAM, and disc space. On devices like tablets and smartphones, this can lead to higher development costs and higher power consumption. On the other hand, TTS conversion in the AWS Cloud reduces the number of local resources required. This allows for the highest-quality support of all available languages and voices. Speech enhancements are immediately available to all end-users and do not require any additional device updates.
Increase Time on Page
The use of Amazon Polly can also increase the amount of time people spend on your website. This can happen when customers listen to project steps or a magazine article. Users don't have to navigate away or pick up the phone to get what they need because text to voice can include step-by-step guidance on the ordering or appointment setting.
FAQs
What is Amazon Polly?
Amazon Polly service converts text into natural-sounding speech. Amazon Polly makes it possible for existing apps to speak as a first-class feature and for entirely new categories of speech-enabled products, such as mobile apps and cars, as well as devices and appliances.
Why should we use Amazon Polly?
We use Amazon Polly to provide high-quality spoken output for our app. This low-cost service has a quick response time and can be used for almost any application, with no restrictions on storing and reusing generated speech.
What are the features available in Amazon Polly?
Using standardised Speech Synthesis Markup Language, we can control various aspects of speech such as pronunciation, volume, pitch, and speech rate, among other things (SSML). We can use the Newscaster style to synthesise speech for certain Neural voices, making them sound like a TV or radio newscaster. There are no restrictions on storing and reusing generated speech.
Conclusion
In this article, we have extensively discussed Amazon Polly, its advantages and how it works.
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