thomas schorpp wrote:
> hi
> 
> 1.
> using ac3dec with vdr or /usr/bin/speaker-test with plug:surround51 
> (/usr/share/alsa/pcm/surround51.conf)
> on a (crosschecked) sunnyline 5.1 headset it turns out here that the channels 
> arrangement on the analog output jacks does not 
> conform to the "reference" channels arrangement of the cmedia ms-windows 
> driver/user space sw...
> 
> a)
> BTW in this operating mode the mixer controls have no effects here and sounds 
> seems to lack LFE.

correction: the available mute controls work

> VLC fails using the 5.1 mode of this device, too.
> 
> b)
> is there a way to change the channel arrangement (especially C/LFE swap) in 
> userspace?
> 
> yes, ive read most of the availlable conf docs at the project site but this 
> rests as "cryptic code" to me,
> who can read and understand this pcm conf stuff language? nor i can find a 
> starting point for 
> days now. ok, the driver loads and asound.state is restored but how are these 
> conf files involved, i cant 
> see the flow chain for now.

ok, ive found a short introducory doxygen documentation about configuration in 
the debian 
libasound2-doc package, but questions left.

> 
> if the ac'97 patch source of the driver is incomplete or unadapted i would 
> gladly help out on the dev list 
> then.
> 
> and c-media corp. are cool guys, look there ;) http://www.cmedia.com.tw/ :
> 
> Product       File
> (Click to Download)   Version Release Date    OS      Category
> CMI9761       Please visit http://www.alsa-project.org/                       
> Linux   Hyperlink
> 
> :D ... so I hope the devs have got the "actual" specs availlable if they are 
> supposed to do support 
> work (in agreement?) for cmedia...
> 
> 2.
> to get software controls and equalizer ive first tried to pipe through 
> mplayer but expectedly 
> didnt work. can i use gstreamer...?

nobody interested? do you all use external spdif receiver-amps?


> 
> 
> regards,
> tom



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