RE: [microsound] [ot tek] pc laptop audio interface recommendations...

["ben dixon" <bend@xxxxxxxxxxxxxxxxxx>]

It doesn't appear to be ground loop.  If I unplug the laptop (so its
running on batteries) the noise doesn't change at all.

> -----Original Message-----
> From: ::) [mailto:r3dshift@xxxxxxxxxxxxx] 
> Sent: Wednesday, 25 June 2003 4:38 PM
> To: microsound
> Subject: Re: [microsound] [ot tek] pc laptop audio interface 
> recommendations...
> 
> 
> its a ground loop problem.  unplug the laptop from A/C and it 
> will go away.
> you can get line conditioners that fix it, but normally, if 
> everything thats
> plugged into the mixer is on the same circuit, you'll be fine.
> 
> we just went over this a few weeks ago here, I dunno if there 
> are archives
> you can search.
> 
> mail me offlist if you need to in order to resolve the problem
> 
> -Joe
> 
> ----- Original Message ----- 
> From: "ben dixon" <bend@xxxxxxxxxxxxxxxxxx>
> To: "'microsound'" <microsound@xxxxxxxxxxxxx>
> Sent: Wednesday, June 25, 2003 2:31 AM
> Subject: RE: [microsound] [ot tek] pc laptop audio interface
> recommendations...
> 
> 
> > On the topic, ive got an ongoing noise problem with using 
> my (PC) laptop
> > in certain performance environments.
> >
> > It sounds like processor noise (little buzzes and clicks 
> that seem to
> > correspond to the machine doing various things, as well as 
> periodic low
> > level bleeps)
> >
> > My original thought was that the sound card in the laptop 
> was picking up
> > the noise from the rest of the hardware, so I went out and 
> bought the
> > Xitel HiFi-Link, a single output USB Audio Device, thinking that by
> > using an external audio device, I'd get away from the noise.
> >
> > The first thing I found was how nice it was having two 
> separate sound
> > outputs on the laptop - one for monitoring and previewing, 
> and the other
> > as a main out.  The sencond thing I found was that the 
> processor noise
> > was still there!  How is this possible?  Moving the device 
> as far away
> > from the laptop as possible doesn't make any difference.  The noise
> > volume is constant.
> >
> > The other thing ive noticed is that it seems to be 
> dependedent on what
> > the output is connected to.  Some mixing desks seem to pick 
> up the noise
> > much worse than others.  Proximity of the laptop to the mixer seems
> > again to make no difference.
> >
> > Id love to be able to sort this problem out - at the 
> moment, it's a bit
> > of a lottery as to whether a given system that im connecting to will
> > pick up the noise or not.
> >
> > Any help much appreciated!
> >
> > ben
> >
> > > -----Original Message-----
> > > From: ::) [mailto:r3dshift@xxxxxxxxxxxxx]
> > > Sent: Wednesday, 25 June 2003 11:23 AM
> > > To: microsound
> > > Subject: Re: [microsound] [ot tek] pc laptop audio interface
> > > recommendations...
> > >
> > >
> > > its fine, get it.
> > >
> > > be careful about USB bandwidth, 2 ins and 2 outs pretty much
> > > maxes USB 1.1
> > > out
> > >
> > > -Joe
> > >
> > > ----- Original Message ----- 
> > > From: <wsoderberg@xxxxxxxxxxx>
> > > To: "microsound" <microsound@xxxxxxxxxxxxx>
> > > Sent: Tuesday, June 24, 2003 8:36 PM
> > > Subject: [microsound] [ot tek] pc laptop audio interface
> > > recommendations...
> > >
> > >
> > > > hello, sorry about the ot...
> > > > looking at getting a midiman quattro usb interface for 
> use with a
> > > > toshiba 1805 s274
> > > > interested in recommendations, pros, cons, alternative 
> products...
> > > > feel free to email me off-list or here...
> > > > danke
> > > > ~w
> > > >
> > > >
> > > >
> > > 
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> > >
> > >
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> >
> >
> >
> > 
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