Live data from Hacker News

WaveNet launches in the Google Assistant

deepmind.com

41–50 of 122 posts

Re: WaveNet launches in the Google Assistant

#42

I am wondering what their baseline is. They call it "Current Best Non-WaveNet". Quite frankly, Apple's most recent deep learning-based speech synthesis sounds superior, but there aren't enough samples to for a proper comparison: https://machinelearning.apple.com/2017/08/06/siri-voices.htm...

It could just be a matter of opinion, but I prefer both Google's unit selection synthesis, and their WaveNet synthesis. The prosody in Apple's latest method is still annoying, nowhere near as good as the Google models of 2015 and 2016, and not remotely comparable to the WaveNet models.

Apple's change in voice talent is an improvement though, and they may have more units than before, which is helpful. I believe their model also works offline, which is a huge plus (though I think Google's prior model works offline as well).

Re: WaveNet launches in the Google Assistant

#43

I'm most interested in its potential for audiobooks, especially of the vast array of old and less-common books that don't have human-made audiobook equivalents. I find myself constrained by the limits of audiobook choices, which tends toward best-sellers lists or pop-sci. Current attempts to use text-to-speech to generate audiobooks results in something that's frankly unlistenable. If TTS could get to a "good enough"…

This was kind of the target of the 2016 Blizzard Challenge (http://festvox.org/blizzard/blizzard2016.html), as the training data was children's books (clean audio, 'reading voice' prosody, etc).

Some of the voices that came out of that were incredible.

Re: WaveNet launches in the Google Assistant

#45

I'm most interested in its potential for audiobooks, especially of the vast array of old and less-common books that don't have human-made audiobook equivalents. I find myself constrained by the limits of audiobook choices, which tends toward best-sellers lists or pop-sci. Current attempts to use text-to-speech to generate audiobooks results in something that's frankly unlistenable. If TTS could get to a "good enough"…

This was kind of the target of the 2016 Blizzard Challenge ( http://festvox.org/blizzard/blizzard2016.html ), as the training data was children's books (clean audio, 'reading voice' prosody, etc). Some of the voices that came out of that were incredible.

Are any of those voices published? Would be interesting to try rendering audio books with them.

Re: WaveNet launches in the Google Assistant

#46
post #37

I've always wondered why companies don't just take all the close-captioned TV streams and use that as training data for their voice models. Seems like it would create a much more natural sounding voice model (at least as far as humans are accustomed to).

What happens if the CC isn't entirely in sync with the video or audio?

Strictly speaking, the text is never 'entirely in sync' because spoken words inherently blur together and are seamless; individual letters in the text do not start and end at precise intervals. This is one of the things that makes speech recognition so hard: letters, syllables, and words do not really exist as discrete things on the raw audio level. So this problem exists for any speech transcription dataset. To provide a loss function, then, you would use something like CTC: http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=FD2... Fortunately, NNs are good at handling noisy data, and in practice they work very well for speech recognition/transcription.

Re: WaveNet launches in the Google Assistant

#48
post #44
post #32

So, when can we expect an open source release of the tech and model?

This is Google, so they'll release a paper and then someone will clone it as an Apache project. Or maybe Linux Foundation these days.

I sure hope so, although I am extremely angered that they don’t release the model.

Google is only having any success with this because they are getting training data from the public for free, they should also return the model to the public for free (at least for noncommercial use)

Re: WaveNet launches in the Google Assistant

#49
post #48
post #44

Earlier quoted context omitted.

This is Google, so they'll release a paper and then someone will clone it as an Apache project. Or maybe Linux Foundation these days.

I sure hope so, although I am extremely angered that they don’t release the model. Google is only having any success with this because they are getting training data from the public for free, they should also return the model to the public for free (at least for noncommercial use)

And their Web ranking model and their spam filtering model? Face it, Google's gonna be Google.

(And I don't think WaveNet is even based on public training data.)

Re: WaveNet launches in the Google Assistant

#50

Wow, I hear a huge improvement in the Japanese model: the difference between a robot in person and a young woman on the phone.

This is interesting - I don't speak much Japanese but that's the one where the difference in quality was most apparent IMHO.
Post reply on HN