envy24 sound quality problem
shoesoft at gmx.net
Tue Jan 30 11:17:50 UTC 2007
On Sunday 28 January 2007 14:45, Alexander Leidinger wrote:
> Quoting "Konstantin Dimitrov" <kosio.dimitrov at gmail.com> (Sat, 27 Jan 2007
> > "spicds_setdvc(ptr->info, 0);" turns on the AK452X De-emphasis filter
> > for 44.1KHz, which is very very wrong, so "spicds_setdvc(ptr->info,
> > AK452X_DVC_DEMOFF);" is completely right and without active AK452X
> > De-emphasis filter the high-frequencies will be present and the
> > problem is fixed.
> > thank you, Stefan, well done!
> > i also made the necessary change to the current code here:
> > http://envy24.svobodno.com/driver/envy24/current/
> Anything to commit?
Should definitely be committed (if Konstantin agrees). He also changed this in
envy24ht.c which basically uses the same code.
With this fix, spectrum analysis of the snd_envy24 output looks (practically)
identical to the output of the win/opensound driver.
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