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google / lyra

A Very Low-Bitrate Codec for Speech Compression
Apache License 2.0
3.81k stars 355 forks source link

quality issues #13

Open tomByrer opened 3 years ago

tomByrer commented 3 years ago

Hardware: modest gaming laptop speaker running Win10 & Firefox

Example: demo blogpost

Issues: Too much siblance (sharp s & ch & some other Transients) Slow 'attack' at the start of some words (eg video of girl: M in "made", W for "What", & TH in "Think" have their initial loudness cutoff). Overall EQ seems too bright

Pros: Quality is easier to understand than Opus. & thanks for improving speech compression; so many times I had to manually tweak clients' talks' audio files to compress better.

I could do more deeper audio analysis if you need; I used to do audio DSP programming....

aluebs commented 3 years ago

Thank you for your analysis and feedback. We are always striving to improve the compressed speech quality.

aluebs commented 1 year ago

Our listening test show that the new Lyra 1.2.0 has significantly higher quality. I am curious about your perception.