[alsa-devel] Backported sbxfi driver, possible fix

The Source thesourcehim at gmail.com
Mon Oct 27 06:32:05 CET 2008

Alexander E. Patrakov пишет:
> Takashi Iwai wrote:
>> A few important features are in my mind:
>> - continuous rate support
> In the sources, you have:
>> Note: 44.1kHz is possible, but is more complex because it uses a method
>> whereby the channel ring marks each sample in the channel ring as valid
>> or not, so to get 44.1kHz, some samples are simply tagged invalid. The
>> "channel ring" is not the ring buffer that is used to get sound samples
>> to the card. The "channel ring" is used to pass samples between
>> different processing modules on the card. One of these processing
>> modules is the SRC, another is the INs/OUTs, another is the hardware
>> mixer, and yet another is the DSP.
> Do I understand correctly that the card internally resamples the sound 
> to a different rate using the zero-order-hold method? If so, I'd rather 
> not see this feature at all unless the "i_want_horrible_sound" parameter 
> is passed, because software can do it better, and some program will 
> surely default to using this hardware misfeature.
> OTOH, Wine is doing this for ages and nobody except me complains 
> (http://bugs.winehq.org/show_bug.cgi?id=14717)
Wine causes sound corruption with this driver for me (along with some 
other software like Pulseaudio).

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