Re: Upsampling by default

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David Woodfall wrote:
> Someone pointed me at this and I wondered if it was still true. IE
> that alsa automatically upsamples to 48K?
> 
> http://www.mythtv.org/wiki/Configuring_Digital_Sound#Bit_Perfect_Audio

All mixing mechanisms (dmix, PulseAudio, hardware wavetable) require
that their inputs are resampled to a common frequency.

(It is no longer true that ALSA's resampling has very low quality.)

> if it's possible to stop upsampling if it is happening

Disable software mixing, i.e., use a "hw" or "plughw" device instead
of "dmix".


Regards,
Clemens

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