Show HN: Text-to-speech and speech-to-text open-source software stack

Re:Show HN: Text-to-speech and speech-to-text open-source so... by ftreml on Sunday January 26, 2020 @05:26PM (#22155231)

good point, will add this information. in short, german and english, because those are the languages i am comfortable with. i hope to find native speakers contributing more languages. deepspeech was evaluated, but right now kaldi provides better performance, thats why we stick to kaldi by default.

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by StudentStuff on Sunday January 26, 2020 @07:22PM (#22155878)

Mozilla DeepSpeech has seen significant improvements in the quality of results it provides (and RAM/CPU usage) since early December, the accuracy of transcriptions has substantially improved in our testing.

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by Erlich_Bachman on Wednesday January 29, 2020 @06:33AM (#22179448)

Can you provide some quantifiable results, like word error rate or something? Do you think it is better than what Kaldi offers currently? (In terms of accuracy, not in terms of computational performance.)

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by StudentStuff on Monday February 03, 2020 @09:11PM (#22231687)

Every release mentions the word error rate, its interesting to watch the WER improve over time: https://github.com/mozilla/DeepSpeech/releases

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by magicalhippo on Sunday January 26, 2020 @06:37PM (#22155659)

> deepspeech was evaluated, but right now kaldi provides better performance

Was this before the streaming API was added to DeepSpeech? I recently did some testing with it, and it provides text within ~100ms of last audio block on my PC.

edit: that is, the most significant latency I had was from having to wait a bit to detect end of speech.

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by ftreml on Sunday January 26, 2020 @06:46PM (#22155708)

with "performance" i meant the error rate, not the speed. speed was not a criteria for us, so we didnt evaluate it. i read that deepspeech is way quicker in training phase as it is smarter in using gpu computing power.

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by magicalhippo on Sunday January 26, 2020 @06:55PM (#22155750)

Ahh gotcha. Yes I got rather poor "hit rate" until I made my own language model.

Fortunately for me I only needed it for command recognition, so the process was quite quick, and results were very good. No need to retrain the net.

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Re:Show HN: Text-to-speech and speech-to-text open-source so... by ftreml on Sunday January 26, 2020 @07:07PM (#22155799)

we used a context-free data set, augmented with additional domain-specific sound samples and it worked out fine, although the additiinal samples made nearly no difference

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