[ddots-l] Re: getting rid of noise in a recording, an update

  • From: "Dave Carlson" <dgcarlson@xxxxxxxxxxxxx>
  • To: <ddots-l@xxxxxxxxxxxxx>
  • Date: Thu, 17 Jun 2010 22:15:03 -0700

Also consider any transmitting devices, such as bug zappers, twisty bulbs, 
Wireless Routers. Anything that can transmit can push noise onto a cable. 
Are you using 3-wire XLS (low impedance) or 2-wire high impedance cables?

Dave

----- Original Message ----- 
From: "D!J!X!" <megamansuperior@xxxxxxxxxxx>
To: <ddots-l@xxxxxxxxxxxxx>
Sent: Thursday, June 17, 2010 22:06
Subject: [ddots-l] Re: getting rid of noise in a recording, an update


Yup, this is EMI. Tell me, what is everything that you have connected to
your PC? And also, what is sharing a plug (elictrical) with your pc?

D!J!X!

-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Scott Lawlor
Sent: Friday, June 18, 2010 12:26 AM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: getting rid of noise in a recording, an update

it's like the kind of noise you'd hear if you have a keyboard plugged into
the microphone input, sort of a higher pitch with some static.  I'll put a
copy into dropbox so you can hear what I'm talking about.  Something else
that is interesting that I just remembered was when I was in sound forge,
and I'd hit CTRL+r to start the recording process, the higher pitch of the
sound, which is equal to b5 on the keyboard, this sound was more pronounced
than the static sound that is also present.  I'm making it a wav file so
there's no signal loss in the file but it's only 10 seconds so shouldnt' be
very big.

http://dl.dropbox.com/u/4669991/noise%20sample.wav

----- Original Message -----
From: "D!J!X!" <megamansuperior@xxxxxxxxxxx>
To: <ddots-l@xxxxxxxxxxxxx>
Sent: Thursday, June 17, 2010 10:53 PM
Subject: [ddots-l] Re: getting rid of noise in a recording, an update


> What kind of noise is it? It could be EMI or a ground loop etc.
>
> HTH, D!J!X!
>
> -----Original Message-----
> From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx]
> On
> Behalf Of Scott Lawlor
> Sent: Thursday, June 17, 2010 11:37 PM
> To: ddots-l@xxxxxxxxxxxxx
> Subject: [ddots-l] getting rid of noise in a recording, an update
>
> Hi.
>
> I did a bit of research and some trial and error and here's what I came up
> with.
>
> It appears that the noise may be a result of the cables I bought because,
> I
> only hear it when the cables are plugged into the pc3 from the front
> inputs
> of the sound card and the noise persists, even if the instrument is off.
>
> I removed all other usb devices one at a time to determine if I could hear
> any change at all in the noise and I didn't.
>
> There is an onboard sigmatel soundcard but I disabled that long ago and I
> don't have a wireless network card so I'm wondering if it is the cables
> after all?  Can someone tell me if this sounds right or no?
>
> Thanks again for the input.
>
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