I want to use an excerpt of an OS X text-to-speech voice in a song that I am recording. Is there any kind of copyright restriction for recordings of the computer voice I should know about, or are they totally free for anyone to use for any purpose?

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    Apparently not. Does anyone have a suggestion for some TTS software that is free for commercial use? – Timothy Mueller-Harder Mar 11 '12 at 16:01
  • Let's leave this question as is and just ask that separate question linking back here as one option you have ruled out... – bmike Mar 11 '12 at 17:07
  • Sure, sounds good. – Timothy Mueller-Harder Mar 11 '12 at 17:32
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    If you're looking for online voice generator, check out ivona.com/en/recordings or acapela-box.com/AcaBox/index.php. You only pay for generating speech from your text, and you can then use it for any purpose you want. – Peter Štibraný Mar 12 '12 at 14:43
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    $ say -v Fred "Fitter, happier, more productive" – Dan Ray Mar 15 '12 at 19:54

You are not free to use them for any purpose, only for personal, non-commercial use while running Apple software. Read Mac OS X Lion Software License Agreement for full details (section G, it is rather short and clear):

Voices Subject to the terms and conditions of this License, you may use the system voices included in the Apple Software (“System Voices”) (i) while running the Apple Software and (ii) to create your own original content and projects for your personal, non-commercial use. No other use of the System Voices is permitted by this License, including but not limited to the use, reproduction, display, performance, recording, publishing or redistribution of any of the System Voices in a profit, non-profit, public sharing or commercial context.

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