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Text to Speech Natural Voices - SAPI 4 & SAPI 5

2nd Speech Center supports all the Microsoft SAPI4, SAPI5 (Speech Application Programming Interface) compatible text-to-speech voices! We have collected most of high-quality free or commercial voices from the Internet for you. They are available for FREE download or buy below.

AT&T Natural Voices

AT&T Natural VoicesThe World's most famous text-to-speech voices. Natural-sounding and high quality.
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Cepstral® Voices

Get Cepstral Voices Now*NOTE: Cepstral Voices are available for Windows, Windows Mobile, Windows CE, Linux, and Mac OSX*

Exciting new voices from Cepstral® are now available for only $29.99 each. These high quality voices take up less disk space (average less than 50mb) than most premium voices, do not use as much processor power, and are very fast when creating audio files. Cepstral® voices are supported by 2nd Speech Center and other sapi5 compatible programs.

Cepstral® Voices support the addition of many languages, including US English, UK English, Canadian French, Italian, German, Americas Spanish, MS Agent Characters.
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IVONA Voices

Get IVONA Voices NowHuman voices for your PC - Use the most natural Text-To-Speech voices ever heard for fun and work.
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CereProc Voices

Get IVONA Voices Now High-quality voices for computers running Microsoft Windows XP and Vista/7. It can replace the default American English Microsoft voices with a wide range of other accents and languages. CereProc's Windows voices are compatible with Microsoft SAPI5, and all voices are 22khz for excellent clarity and naturalness. Get Them Now!

How to Install Text-To-Speech Voices:

After the download is complete, run the .exe/.msi file to install the new voice engine. After installing, close 2nd Speech Center and restart the program. The new voices will appear in the Voices drop-list.

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