Reply 500 of 1132, by krcroft
Excellent work btw, I use Opus plenty, but not in dosbox yet.
I've enjoyed reading your audio-related posts. One of the benefits Opus adds to DOSBox is avoiding resampling along the software and audio hardware chain, because almost all modern DACs use 48kHz as their native rate.
If you set DOSBox's mixer rate to 48kHz in your dosbox-SVN.conf, and then mount your Opus+CUE, the patch ensures PCM samples are passed through at least up to the edge of the audio driver, at which point the samples should continue at 48kHz clean through the remaining digital HW chain.
Where as with 44.1kHz tracks, resampling to 48kHz will be performed (possibly poorly) at various points along the chain.
I haven't attempted to quantitize those losses compare to the pure-passthrough Opus scenario, but it would be interesting none the less!