[AG-TECH] Problem Troubleshooting Audio

[Robert Olson]

At 07:52 AM 7/9/2001 -0600, Stewart, Corbin J wrote:
>I've been having some difficulty troubleshooting an audio problem with our
>node and would appreciate any suggestions or insights.
>Our node has been working perfectly up until about a week ago when a buzz
>started eminating from the speakers.  The problem has escalated to popping
>and hissing when any noises are made in the room.   The physical connections
>appear to be intact and we believe we have traced the cause to our Digital
>Match Maker.  Is this a required piece of equipment?  We suspect that it may
>be inducing noise.

Why do you suspect that? The fact that you get noises when there  is room 
noise implies to me there might be a feedback path from local microphones 
to local speakers.

Also check your gentner matrix to ensure that a local reinforcement path 
isn't enabled.


>Also, when rebooting the Linux audio machine I get an error message stating
>that OSS cannot be loaded because a sound module has already been loaded
>into the kernel (es1371.o, Ensonique Sound).  Oddly enough, no software or
>hardware configurations have been changed since the original working setup.
>Is this something I should be concerned about?


I think the two things may be related. It sounds like the kernel audio 
drivers are now getting loaded instead of the OSS drivers.  The switch in 
audio drivers might have made the code that turns off the feedback paths on 
the card not work.

--bob
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