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Re: Massive sound changes / fix (24/32bit pcm support, new sampling rate converter, various fixes)



On Wed, 13 Jul 2005 10:38:11 +0200
Sascha Klauder <sklauder_(_at_)_trimind_(_dot_)_de> wrote:
> On Wed, Jul 13, 2005 at 06:13:47AM +0800, Ariff Abdullah wrote:
> > On Tue, 12 Jul 2005 22:44:04 +0200
> > Sascha Klauder <sklauder_(_at_)_trimind_(_dot_)_de> wrote:
> > > Something's not right here.  I had some minor issues with
> > > crackling noise on PCM playback with pcm1 (it's an AWE64),
> > > which seems to be gone now, but the playback is just a bit
> > > too slow, which sounds pretty strange.  Playback on pcm0
> > > (old SB Live!) is just fine, as it was before applying the
> > > patch.
> > AWE64 is actually not capable of driving sampling rate at 48k
> > (which is the current default value for vchan). Fortunately you
> > can tune default sampling rate using kernel hint by adding this to
> > your /boot/device.hints:
> > 
> >                 hint.pcm.1.vchanrate="44100"
> 
>  Works fine, thanks! 
> 
> > rate on the fly, something like sysctl hw.snd.pcm0.vchanrate=xxx.
> > Stay tuned. If you insist, you may try my latest (revision 8)
> > patch from:
> > 
> >   http://staff.mybsd.org.my/skywizard/FreeBSD/sound/incoming/
> 
>  Sounds nice, will try that later! 
> 
> > I do have general solution to entirely eliminate noise / crackling
> > issues (which plagued most SBLive!), which is part of my TODO
> > list.
> 
>  I have no problems whatsoever with noise on the Live!, but
> had some slightly crackling noise on the AWE card ever since
> I switched from 4.10 to 5.4, which is gone now with your patch.
> Thank you! :) 
> 

Nice to hear that. Thank you.


--

Ariff Abdullah
MyBSD

http://www.MyBSD.org.my (IPv6/IPv4)
http://staff.MyBSD.org.my (IPv6/IPv4)
http://tomoyo.MyBSD.org.my (IPv6/IPv4)
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