Re: [Alsa-devel] Re: CMI8738-MC6 surround40 plugin on 4 SP systems]
At Tue, 4 Nov 2003 19:35:37 -0500, Marcel wrote: * Takashi Iwai ([EMAIL PROTECTED]) wrote: At Fri, 31 Oct 2003 12:39:18 -0500, Marcel wrote: * Takashi Iwai ([EMAIL PROTECTED]) wrote: At Thu, 30 Oct 2003 12:42:39 -0500, Marcel wrote: I've been trying to finetune my cmipci for several weeks now. And this is the best way I've been able to get transparent operation with various audio material: stereo, mono, 4.0, 5.1. The main problem being no surround sound iif Exchange DAC setting was not set, and sound on the rear speakers only if it was. ah, this might be true. does it happen both on 4.0 and 5.1 outputs? i don't remember that it's necessary for 5.1 at the last time i tested. With surround40 plugin, 4 speakers, yes it's needed for both 4.0 and 5.1 material. Applications such as mplayer or xine will remix 5.1 material to 4 channels. For 6 speakers systems, I really don't know. could you try surround51 and check whether it somehow works? I tried. It's ok with stereo material. With 5.1 material, xine refuses to use it because I have 4 speakers only. Mplayer will use it but 2 channels only. Seems there is no way to force applications to use 6 channels when I got only 4 speakers. Mplayer -ao alsa9:surround51 -channels 6 gives an error. And I don't have any 5.1 sound file in wav or mp3 format for aplay or alsaplayer to try. Never been able to locate some. But I suspect it will fail too. I think you'll need someone with 6 physical speakers to have this verified. perhaps we should simply remove this control from user and handle internally for the MC6 chip. I agree. Its usage is confusing and may results in improper operation how about the attached patch? Great job! If I understand how it works, the mixer setting is gone for the 8738-MC[46] chipsets, and still there for plain 8[37]38. Works very well here, no more confusion. Multi-channel sound is enabled automatically. Front material is always in front, and surround material always in rear. Adjustment is unconventional, but straightforward for surround material: 1 - Master at 0. 2 - Adjust rear volume with PCM near maximum required. 3 - Increase front volume with Master to obtain rear-front balance. 4 - Decrease PCM to lower volume on all 4 speakers. Unusual, but that's the way its operates. hmm, it seems there is something wrong in the SB-style mixer code. perhaps we need to put some delay. anyway, the changes are now applied to cvs. One more control that deserves to go in mixer: 3D Control Switch. It doesn't work, never did, does nothing at all. well, it works for the older model. it's a 3D-enhancement and not really 3d thing. i'm not sure whether this doesn't work for all new models ( 037), so it still remains there. we can remove it later after confirming that all new chips don't support this. Takashi --- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ ___ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
Re: [Alsa-devel] Re: CMI8738-MC6 surround40 plugin on 4 SP systems]
One more control that deserves to go in mixer: 3D Control Switch. It doesn't work, never did, does nothing at all. well, it works for the older model. it's a 3D-enhancement and not really 3d thing. Ok, my AWE64 and several SB clones used to have this. i'm not sure whether this doesn't work for all new models ( 037), so it still remains there. we can remove it later after confirming that all new chips don't support this. Ok, no problem. Mine is model 055, it's around 18 months old. The windows driver doesn't support it either. Takashi --- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ ___ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
Re: [Alsa-devel] Re: CMI8738-MC6 surround40 plugin on 4 SP systems]
At Fri, 31 Oct 2003 12:39:18 -0500, Marcel wrote: * Takashi Iwai ([EMAIL PROTECTED]) wrote: At Thu, 30 Oct 2003 12:42:39 -0500, Marcel wrote: I've been trying to finetune my cmipci for several weeks now. And this is the best way I've been able to get transparent operation with various audio material: stereo, mono, 4.0, 5.1. The main problem being no surround sound iif Exchange DAC setting was not set, and sound on the rear speakers only if it was. ah, this might be true. does it happen both on 4.0 and 5.1 outputs? i don't remember that it's necessary for 5.1 at the last time i tested. With surround40 plugin, 4 speakers, yes it's needed for both 4.0 and 5.1 material. Applications such as mplayer or xine will remix 5.1 material to 4 channels. For 6 speakers systems, I really don't know. could you try surround51 and check whether it somehow works? perhaps we should simply remove this control from user and handle internally for the MC6 chip. I agree. Its usage is confusing and may results in improper operation how about the attached patch? Takashi cmipci-4ch-fix.dif Description: Binary data
Re: [Alsa-devel] Re: CMI8738-MC6 surround40 plugin on 4 SP systems]
* Takashi Iwai ([EMAIL PROTECTED]) wrote:
At Fri, 31 Oct 2003 12:39:18 -0500,
Marcel wrote:
* Takashi Iwai ([EMAIL PROTECTED]) wrote:
At Thu, 30 Oct 2003 12:42:39 -0500,
Marcel wrote:
I've been trying to finetune my cmipci for several weeks now. And this is
the best way I've been able to get transparent operation with various audio
material: stereo, mono, 4.0, 5.1. The main problem being no surround sound
iif Exchange DAC setting was not set, and sound on the rear speakers only
if it was.
ah, this might be true.
does it happen both on 4.0 and 5.1 outputs?
i don't remember that it's necessary for 5.1 at the last time i
tested.
With surround40 plugin, 4 speakers, yes it's needed for both 4.0 and 5.1
material. Applications such as mplayer or xine will remix 5.1 material to
4 channels. For 6 speakers systems, I really don't know.
could you try surround51 and check whether it somehow works?
I tried. It's ok with stereo material. With 5.1 material, xine refuses to
use it because I have 4 speakers only. Mplayer will use it but 2 channels
only. Seems there is no way to force applications to use 6 channels when I
got only 4 speakers. Mplayer -ao alsa9:surround51 -channels 6 gives an
error. And I don't have any 5.1 sound file in wav or mp3 format for aplay
or alsaplayer to try. Never been able to locate some. But I suspect it
will fail too. I think you'll need someone with 6 physical speakers to have
this verified.
perhaps we should simply remove this control from user and handle
internally for the MC6 chip.
I agree. Its usage is confusing and may results in improper operation
how about the attached patch?
Great job! If I understand how it works, the mixer setting is gone for the
8738-MC[46] chipsets, and still there for plain 8[37]38. Works very well
here, no more confusion. Multi-channel sound is enabled automatically.
Front material is always in front, and surround material always in rear.
Adjustment is unconventional, but straightforward for surround material:
1 - Master at 0.
2 - Adjust rear volume with PCM near maximum required.
3 - Increase front volume with Master to obtain rear-front balance.
4 - Decrease PCM to lower volume on all 4 speakers.
Unusual, but that's the way its operates.
Don't forget to remove the following block in alsa/cards/CMI8738-MC6.conf if
you added it in the CVS, otherwise you'll get errors when using surround40
as Exchange DAC is no more:
# {
# name Exchange DAC
# lock true
# preserve true
# value true
# }
May I suggest adding this patch to the CVS?
One more control that deserves to go in mixer: 3D Control Switch. It
doesn't work, never did, does nothing at all.
---
This SF.net email is sponsored by: SF.net Giveback Program.
Does SourceForge.net help you be more productive? Does it
help you create better code? SHARE THE LOVE, and help us help
YOU! Click Here: http://sourceforge.net/donate/
___
Alsa-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-devel
