hints for troubleshooting poor sound quality.
Sandy Rutherford
sandy at krvarr.bc.ca
Sun Sep 25 17:07:15 PDT 2005
>>>>> On 19 Sep 2005 10:23:07 -0400,
>>>>> Lowell Gilbert <freebsd-questions-local at be-well.ilk.org> said:
> George Hartzell <hartzell at kestrel.alerce.com> writes:
>> I've set up an ASUS small form factor machine based around an P4S8L
>> ...
>>
>> The machine has two mini-jacks, one in the front and one in the
>> back. If I plug a set of headphones into the front jack I hear all
>> kinds of clicks and whirs and buzzing. They seem to correlate with
>> drive activity, cd activity, and maybe even the cpu fan. The
>> connector on the back seems quieter, but I still hear a bit of
>> noise.
>>
>> I hear less noise on a set of sony powerer-subwoofer-and-tweeter
>> speakers, but it's still noticable.
>>
>> ...
> Well, yes, it *is* electrical interference on the motherboard. You
> may be able to reduce its impact, though. Reducing the amplifier gain
> (ogain in the mixer(8) output) may help, for example. Also, does
> playing digital audio see this effect, or only playing CDs? If the
> latter, you can switch to digital extraction for playing CDs (most
> software doesn't support it, but some does) and avoid the
> interference.
Would using an external USB audio device be another option? Last time
that I checked, FreeBSD support for USB sound was not ready for prime
time. However, I don't know what the lastest state of affairs is.
Sandy
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