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xiph / LPCNet

Efficient neural speech synthesis
BSD 3-Clause "New" or "Revised" License
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Qualitative analysis #188

Closed pejokoe closed 2 years ago

pejokoe commented 2 years ago

What are good ways of assessing quality achieved by the LPCNet Vocoder? I found that PESQ results are way worse than the quality I experienced myself, with ratings constantly in the range between 1 and 2 (which is to be interpreted as hardly/barely understandable). Has anyone experienced similar problems with PESQ? What are the alternatives?

jmvalin commented 2 years ago

PESQ is useless for vocoders in general, but there's an ancient quality assessment tool that does a good job. I believe it's called "ears" :-) Seriously, subjective listening is really the only decent way I've found to evaluate vocoders. I've not come across any remotely useful objective metric.

pejokoe commented 2 years ago

Thank you for taking the time to answer!