
Amazon Polly is a cloud-based text-to-speech (TTS) service provided by Amazon Web Services (AWS) that converts written text into natural-sounding speech. It uses advanced deep learning technologies to synthesize speech that closely resembles human voice patterns and intonations. Polly is part of a larger suite of AI and machine learning services offered by AWS, targeting businesses seeking to enhance user experiences through voice interactivity.
Founding: Amazon Polly was announced in November 2016 as part of AWS’s AI services. The development drew from Amazon’s ongoing investments in artificial intelligence, machine learning, and natural language processing.
Wide Range of Voices and Languages: Polly supports multiple languages and accents, providing numerous voice options, from male to female.
Neural Text-to-Speech (NTTS): The NTTs feature produces high-fidelity speech that enhances naturalness and auditory engagement.
Speech Mark Support: This allows developers to get metadata about the generated speech, such as timing, enabling better integration with applications.
Custom Lexicons: Users can define the pronunciation of specific words or phrases to enhance clarity and customization.
Real-Time Processing: Polly allows for immediate processing of text into speech, which is vital for applications requiring quick response times.
E-Learning: Many educational platforms use Polly to create interactive lessons.
Healthcare: Applications that assist with patient communication or accessibility features rely on Polly for speech synthesis.

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