Re: [Gumstix-users] Audiostix/OSS/Alsa noise question

[Darren G. <ts...@ya...>]

ah ha!   card0/codec97#0/ac97#0-0+regs

BTW: Is this bit from the FAQ still true:

"Q: I believe the reason I am getting poor microphone recording  
quality is that the +20 dB mic boost is not on and not accessible  
using aumix (OSS).

gumstix: That feature is accessible through aumix using the -i "input  
gain" feature. -i 100 will turn on boost; -i 0 will turn it off. To  
set the gain on MIC or LINEIN sources, use the MIC or LINEIN specific  
gain options in aumix."

aumix -i  seems to allow variable gain between 0-100

darren


On Jul 3, 2006, at 6:28 PM, Craig Hughes wrote:

> They're there somewhere under /proc/asound under ALSA.  The pseudo-
> filename has "regs" in it I think.
>
> C
>
> On Jul 3, 2006, at 6:26 PM, Darren Gibbs wrote:
>
>>
>> On Jul 3, 2006, at 5:35 PM, Craig Hughes wrote:
>>
>>> Darren, it could be that the way the ALSA ucb1400 driver is
>>> initializing the various filters on the ucb1400 is different from  
>>> how
>>> the old OSS driver was doing it.  That'd be the most likely reason I
>>> think for difference like you're reporting.
>>
>> Thanks Craig, that makes sense...
>>
>> Is there a way to dump the ucb1400 registers so I can compare
>> settings?  I remember in the past one could cat /proc/drivers/ac97/
>> ucb1400 and get info.  I've poked around under /proc/asound and / 
>> proc/
>> drivers but haven't found anything yet.
>>
>> darren
>>
>> Using Tomcat but need to do more? Need to support web services,
>> security?
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>
>
> Using Tomcat but need to do more? Need to support web services,  
> security?
> Get stuff done quickly with pre-integrated technology to make your  
> job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache  
> Geronimo
> http://sel.as-us.falkag.net/sel? 
> cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
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