Hi Paul.

OK - got it.  I mean at least from a user perspective, by looking at HDSPmixer, the HW-outputs seemed like single controls.
What's confusing on the first glance is that these cover a different gain range and can be contolled independenly form the input
controls.  I considered the outputs the vertical and the inputs the horizantal layer of the matrix. Anyhow. Never mind.

Perhaps you could explain why in HDSPmixer the input group controls have a range of -inf to +6db and the HW-outputs -inf to 0db.   

THX
Klaus


On Sun, Oct 25, 2009 at 2:29 AM, Paul Davis <paul@linuxaudiosystems.com> wrote:
On Sat, Oct 24, 2009 at 10:46 AM, Klaus Schulz <kls.schlz@googlemail.com> wrote:

> The pity is really that I can not control the attenuation on the hw-outputs
> with amixer. I'll do that on the application side.

there is no such control in the hardware. the matrix mixer only
provides gain control for the signal level of a particular source to a
particular output. the idea of "turning down channel 13" doesn't exist
as an individual idea in this h/ w design - you have to turn down
everything that feeds channel 13 instead.