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I use the Web Speech API via Chrome to synthesize speech of my original text. I record the output audio using some other software.

Do I own the copyrights to that recording? Can I sell the recorded audio file? Can I use it in my commercial YouTubes for instance?

According to Chrome's terms (as depicted here: https://www.google.com/chrome/browser/privacy/eula_text.html), it would seem to me - I am indeed the owner of the recording, as Chrome's speech api is given as one of Chrome's services, which I can use to produce my own content. But - I would like to be sure.

The closest answer by Google I saw is here: https://lists.w3.org/Archives/Public/public-speech-api/2013Jul/0001.html Which says the web speech api can be used for commercial. My specific question is about the recorded audio file.

NEW: We asked Google’s legal team about it, and they asked us to ask a private attorney. So, we asked one of the leading copyrights attorneys - Attorney Rod Underhill from California about it. We published his full answer on http://ttsreader.com/blog/2017/05/10/copyright/

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I presume the input is text: "my original text" is assumed to mean you wrote (created) the text. That means that you hold the copyright to the text, and only you can authorize a derivative work (such as a synthesized recording). Therefore, you hold the copyright to the recordings as well. The crucial consideration governing that right is that you "created" the work, meaning that there is a modicum of creativity. However, if you did not create the text and your only function is to host an automatic process where users can create a synthesized recording, then whoever created the text has the right to the text and derivative works (i.e. the synthesized output). Automated processes like (unassisted) OCR or wav-to-mp3 conversion would not count as being "original", nor would automatic text-to-speech, so you don't gain copyright just from making an automatic work-creating tool available.

On the assumption that the conversion involves a component of Chrome, you can use the service per the terms of service, though you cannot "reproduce, duplicate, copy, sell, trade or resell the Services". This might limit the extent to which you could make this conversion available to others, depending on how, exactly, you could do such a thing (does it duplicate the service?). As they say, Google owns all legal right to the Services, but Google obtains no right from you for any content created through their service.

There is no restriction in the TOS against using the service for commercial purposes. Even if there were, that would not assign copyright in the recording to anyone else, it would just mean they could sue you for violating the TOS.

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