Google has announced it is upgrading its text-to-speech (TTS) by Google speech engine by providing clearer, more natural voices.

The company said that all 421 voices in 67 languages have been upgraded with a new voice model and synthesizer.

“If you already use TTS and the Speech Services by Google engine, there is nothing to do — everything will happen behind the scenes as your users will have automatically downloaded the latest update. We have seen a significant side-by-side quality increase with this change, particularly with respect to clarity and naturalness,” the platform said on its developer’s page.

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“With this upgrade, we will also be changing the default voice in en-US to one that is built using fresher speaker data, which alongside our new stack, results in a drastic improvement. If your users have not selected a system voice, and you rely on system defaults, they will hear a slightly different speaker,” it added.

This update will be rolling out to all 64-bit Android devices via the Google Play Store over the next few weeks as a part of the Speech Services by Google apk.

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