Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-29 Thread Lennart Sorensen
On Sat, Aug 27, 2005 at 05:47:08PM -0400, Lee Revell wrote: > For the best S/N ratio and dynamic range all mixer controls SHOULD be at > 100%, assuming the volume control in your driver only attenuates > signals. This is the case for the emu10k1 which implements all mixer > controls via DSP progra

Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-27 Thread Lee Revell
On Sat, 2005-08-27 at 17:17 -0400, Lennart Sorensen wrote: > As for volume settings, I always try to keep the sound card mixers at > around 75 to 80% since it seems most amplifiers and mixer do distort a > bit when you max them out. Why would you want them all at 100% > anyhow, then you might as w

Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-27 Thread Lennart Sorensen
On Sat, Aug 27, 2005 at 08:18:59PM +0200, Thomas Zehetbauer wrote: > I have now been told that SPDIF cannot support more than 2 channels > except with AC3 compression. Given the fact that we can send 580MBit/s > over USB2.0 I would not have even remotely considered this to be the > problem and find

Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-27 Thread Lee Revell
On Sat, 2005-08-27 at 20:18 +0200, Thomas Zehetbauer wrote: > I have now been told that SPDIF cannot support more than 2 channels > except with AC3 compression. Given the fact that we can send 580MBit/s > over USB2.0 I would not have even remotely considered this to be the > problem and find it an

Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-27 Thread Thomas Zehetbauer
I have now been told that SPDIF cannot support more than 2 channels except with AC3 compression. Given the fact that we can send 580MBit/s over USB2.0 I would not have even remotely considered this to be the problem and find it an incredible shame that audio industry is using such a crippled standa

Re: Surround via SPDIF with ALSA/emu10k1?

2005-08-22 Thread Robert Hancock
Thomas Zehetbauer wrote: Now I can either enable the 'SB Live Analog/Digital Output Jack' switch and use the SPDIF connector to my DD5.1 surround system OR mute this control and access/unmute the rear/center/LFE channels. Using analog cabling is not an option as the DTT2500 has no connector for t

Surround via SPDIF with ALSA/emu10k1?

2005-08-22 Thread Thomas Zehetbauer
Hi, I am desperately trying to get surround sound working here. I have - Creative Labs SB Live! 5.1 (emu10k1) card - digital/SPDIF/coaxial connection - Cambridge SoundWorks DTT2500 - linux-2.6.12.5 - alsa-lib-1.0.9rf-2 Digital and analog sound basically works. I can play music on the front speake