Icecast - Aug 2004 - stream sounds like poo for no apparent reason

Sorry, here is a link to more information.

http://www.epanorama.net/documents/groundloop/index.html

-----Original Message-----
From: Benninghoff, John 
Sent: Wednesday, April 24, 2002 2:28 PM
To: 'icecast@xiph.org'
Subject: RE: [icecast] stream sounds like poo for no apparent reason

<p>This does sound like a grounding problem. My (limited) understanding is
that when you have 2 audio components plugged in to different outlets, there can
be a voltage differential between the ground on the 2 devices, which will create
an electrical flow between the 2 components, which is the source of the hum. I
have had this problem before and solved with a ground loop isolator, (from Radio
Shack) which somehow blocks the flow, and is cheaper than a mixer. I would guess
that a mixer has something like this built in.

There are other possible causes for this, but I would also suspect that it is
not a computer problem, but a physical problem.

-----Original Message-----
From: Samuel Hathaway [mailto:hathaway@munkynet.org]
Sent: Wednesday, April 24, 2002 2:16 PM
To: icecast@xiph.org
Subject: Re: [icecast] stream sounds like poo for no apparent reason

<p>On Wed, 24 Apr 2002, Samuel Hathaway wrote:
> On Wed, 24 Apr 2002, Alex Walker wrote:
>
> > On Tue, Apr 23, 2002 at 01:16:34AM -0400, jim wrote:
> > > here at wkdu.org our minds are blown trying to figure out what
our
> > > problem is, we are using a dell optiplex gx1 with a soundblaster
live
> > > card. we are getting a nasty hum on the line in.  the thing is we
plug
> > > a cd player directly into the soundcard the hum goes away and
when we
> > > plug the line in into anything else there is no hum, so the
question i
> > > ask where is the hum coming from?  we are completely boggled.  we
are
> > > using the latest version of iceccast along with darkice.7.....if
this
> > > wasnt enough i have a a lit paper due tomm that has made my head
hurt
> > > on top of this......
>
> Hmm, since no other audio sources produce a hum, I'd suspect the line
from
> your board or something, not a computer problem. We at WRUR (wrur.org)
> have a really long run from the front of the studio to the room with the
> servers, and there's a hum.
> -samuel
Hmm, I may have read your post wrong. Are you saying that when you plug
the line from the studio into another amp (or something) you don't get the
hum? If so, it might be a grounding issue in the sound card. If you have a
mixer lying around, plug the line from the studio into it and then run the
output from the mixer to the sound card.
-samuel

by the way, my friend dennis's friend kelly is a dj there i think. heh.

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