<html>
<head>
</head>
<body>
I, however, am an audio engineer. If it is a buzz or a hiss, it is noise.
As opposed to a squeal that starts low, then the pitch rises to a squeal,
and the distance from the speaker to the mic, which is a feedback loop.<br>
<br>
Things you can do for noise:<br>
1) Identify the noisy part, and turn down everything after it in the signal
path. For instance, you may get better results by turning down the knob
on your speakers, and using the PC mixer to increase overall volume and individual
sources. Try each way around. One will be better than the other.<br>
2) Get better equipment. Not much of a consolation, but sometimes, this
is all you can do. <br>
3) Isolate, combine, or improve grounds. If this hum is at 60 hz, you can
ground isolate on the signal line, ground tie on the power side, or at least
make sure you have good grounding on everything. If one thing has more resistance
to ground than the other, the ground will use the signal path as the route
of least resistance, and cause sound problems.<br>
4) Switch to a balanced setup. If you go from the standard 2 conductor audio
cables, to equipment designed fro, and using 3 conductors per channel, you
can make longer runs without noise problems, because it uses distance from
ground on 2 signals, and a differential amplifier to remove noise. This
should not be needed for runs under 10 to 20 feet, and would be VERY EXPENSIVE.<br>
<br>
Bubba style diagnostics:<br>
Plug a pair of headphones straight into the sound card. Is the noise there?
If so, you are jammed. Buy a sound card. If not, hook the speakers to
a walkman running from batteries (not an AC adapter, this could be ground
related) Is it there? If yes, buy speakers. If it is there neither way,
but it is there when they are hooked together, it is probably a ground problem.
you can try to improve your grounds, and make sure they are on the same
ground circut, but if one or both is a 2 prong plug, go to Radio Shack, spend
$11 and buy a "Ground Loop Isolator"<br>
<br>
Joe 'Zonker' Brockmeier wrote:<br>
<blockquote type="cite" cite="mid:Pine.LNX.4.33.0202121434001.7344-100000@odin.attbi.com">
<pre wrap="">On Tue, 12 Feb 2002, Kevin Cullis wrote:<br><br></pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">If it's just a loud hissing/buzzing noise, that's just the speakers<br>amplifying the signal noise. (Note, I'm not an audio engineer, so<br>that's probably not the correct technical term.)<br></pre>
</blockquote>
<pre wrap="">This is what it sounds like, a humming/hissing noise. I've turned down<br>the speaker sound and it helps, but I was wondering if there is<br>something else I should consider to help out.<br></pre>
</blockquote>
<pre wrap=""><!----><br>There probably isn't much you can do. It might help to turn down the<br>sound on the computer, but you're probably going to get the buzzing<br>and hissing to some degree when you push the speakers close to<br>maximum volume.<br><br>Take care,<br><br>Zonker<br>--<br>Joe 'Zonker' Brockmeier -=- <a class="moz-txt-link-abbreviated" href="mailto:jbrockmeier@earthlink.net">jbrockmeier@earthlink.net</a><br><a class="moz-txt-link-freetext" href="http://www.DissociatedPress.net/">http://www.DissociatedPress.net/</a><br>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=<br>"Crime made its appearance during the dawning age of literacy. What<br>this means is that, as soon as people started to write, they started<br>writing laws; this is because writing enabled them to do something<br>they hadn't been able to do before. Writing enabled them to define<br>in exact, fixed terms the behaviors they wanted the state to regulate,<br>punish, and
suppress." -- Daniel Quinn<br><br>_______________________________________________<br>CLUE-Tech mailing list<br><a class="moz-txt-link-abbreviated" href="mailto:CLUE-Tech@clue.denver.co.us">CLUE-Tech@clue.denver.co.us</a><br><a class="moz-txt-link-freetext" href="http://clue.denver.co.us/mailman/listinfo/clue-tech">http://clue.denver.co.us/mailman/listinfo/clue-tech</a><br></pre>
</blockquote>
<br>
</body>
</html>