>SPDIF only supports two channels. AC3 encoding (if the source >material is PCM) or AC3 passthrough (if the source is AC3 encoded >already) is required to send surround over the optical port. >Lee I understand. I guess I thought it was an issue, since when I play a DVD I don't hear voice, for instance.. but I hear all background. Perhaps this is a software configuration issue. I guess I could also find some audio with AC3 and determine if the receiver process the channels correctly. On Thu, Dec 25, 2008 at 9:39 PM, Jason Gauthier <jgauthier@xxxxxxxxxx> wrote: > All, > > > > I have moved to 10.018a, and this issue still persists. I cannot get all > 6 channels working, and in fact the right and left seems to come out of the > rear. > > It's just completely inconsistent. > > > > Can anyone lend a hand, or some form of troubleshooting ideas? > > > > Thank you, > > > > Jason > > > > From: Jason Gauthier > Sent: Wednesday, October 29, 2008 9:58 PM > To: alsa-user@xxxxxxxxxxxxxxxxxxxxx > Subject: Surround Sound issues > > > > All, > > > > I'm using a Roland UA-1EX > (http://www.rolandus.com/products/productdetails.aspx?ObjectId=743) and > using the optical out. > > I'm having some very basic surround sound issues, I believe. > > > > Doing a simple speaker-test -c 6 I see the following output: > > > > speaker-test 1.0.18rc3 > > > > Playback device is default > > Stream parameters are 48000Hz, S16_LE, 6 channels > > Using 16 octaves of pink noise > > Rate set to 48000Hz (requested 48000Hz) > > Buffer size range from 2229 to 17832 > > Period size range from 1114 to 1115 > > Using max buffer size 17832 > > Periods = 4 > > was set period_size = 1114 > > was set buffer_size = 17832 > > 0 - Front Left > > 4 - Center > > 1 - Front Right > > 3 - Rear Right > > 2 - Rear Left > > 5 - LFE > > > > I am only having output on Front Left and Front Right. > > I am uncertain how to accomplish any further testing or determine what is > wrong. > > > > Can anyone lend a hand? > > > > Thanks, > > > > Jason > > ------------------------------------------------------------------------ ------ > > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > > ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
