Polly is the AWS text-to-speech service that uses deep learning to synthesize speech that sounds like a human voice.
Amazon announced Wednesday it will give a select group of developers the opportunity to add different US English voices to their Alexa skills for free.
The preview will give developers access to eight different voices via Polly, the Amazon Web Services text-to-speech service that uses deep learning to synthesize speech that sounds like a human voice.
Some developers may have added different voices to their Alexa skills via .mp3 files or some other technique, but Amazon says using Polly is simple -- a developer can choose a voice using the Structured Speech Markup Language (SSML) and specifying the voice using the "voice name" tag.
Ealier this month, Amazon opened up access to two of its monetization tools for Alexa developers: in-skill purchasing and Amazon Pay for Alexa skills.
Meanwhile, the new Alexa voices follow Google's addition of six new voices for Google Assistant. Google last week also unveiled Google Duplex, a Google Assistant tool that uses a human-sounding voice to make phone calls to carry out specific tasks like scheduling a reservation.