On Thu, Nov 22, 2007 at 12:36:51PM -0800, J.C. Roberts wrote: > On Wednesday 21 November 2007, Alexandre Ratchov wrote: > > On Wed, Nov 21, 2007 at 01:12:38PM -0800, J.C. Roberts wrote: > > > On Wednesday 21 November 2007, Nickolay A. Burkov wrote: > > > > Hello everyone! > > > > > > > > Do somebody have success with 5.1 sound ? > > > > If so, please recommend PCI Sound Card to work with OpenBSD > > > > 4.2(-CURRENT). > > > > > > > > I have MARC'ed a bit but similar messages were > 1 year ago. > > > > I'd like to think that something have been changed.. > > > > > > > > Thank you for your time. > > > > > > For some strange reason I recall reading about some work being done > > > on the Sound Blaster "Audigy" cards. Many of those cards are 5.1, > > > 6.1 or 7.1 surround sound. > > > > > > A quick search on "openbsd audigy" shows we've had support since > > > 3.9 but I'm not sure if this includes the surround sound features, > > > or if it's just two channel? > > > > Older audigy cards based on EMU10K1 chips are supposed to work with > > the emu(4) driver, it's still two channel. Newer cards based on > > CA0106 will not work because there's no driver for the chip. The > > last time I've asked creative for documentation they didn't reply; > > since then, I've lost interest in these cards. > > > > -- Alexandre > > Alexandre, > > Off-list I was told that some of the older "SoundBlaster Live" cards > will work in 5.1 mode including front/surround/centre/lfe control, but > the off-list statement contradicts what you said earlier about no 5.1 > (or better) support? > > I suspect you understand the code far better than most (including me). > :-)
as far as the hardware, you may be able to control the speakers separately with emu(4), cmpci(4) and possibly others. if `mixerctl -a` shows outputs.center, outputs.lfe, etc, then this could be possible. however, the emu(4) and cmpci(4) low level drivers only support 1 or 2 channel input/output. audio(4) itself does not restrict the number of channels. I think the bigger question is: what applications actually output more than 2 audio channels? none, afaik. please let me know if there is something I do not know about. also, some devices support AC-3 pass-through. that is, the devices themselves decode (2.1, 5.1, 7.1) AC-3 audio streams, but this is not supported in audio(4) nor in the low level drivers. -- [EMAIL PROTECTED] SDF Public Access UNIX System - http://sdf.lonestar.org
