Computer noise

Joenco · Oct 18, 2003, 10:16 PM

Hello all,

My card is Audigy 2 SB0240

If I pump up my output level on my amp to test listen for background hiss, I can hear very good computer noise.
It is very loud (compared to normal hiss) when starting ASIO appllications like reaktor.
It is related to the ASIO buffer as it changes pitch when changing latency.
It is also related to most computer hardware like graphic card, mouse, IDE traffic etc.

I can here noise if I move my mouse or drag windows.

Once again one can not here this noise when listening at normal volume.
I listen to this noise with poweramp. 250W RMS and alike speakersystem.

Is this noice normal or should I look for things like shielding or grounding?

Thank you,

Joenco

Robert McClelland · Oct 18, 2003, 10:51 PM

Did you used driver cleaner installing new sound drivers?

Joenco · Oct 18, 2003, 10:57 PM

Hello,

This is a fresh installl with updated drivers only.
My comp is not in a computer case .
It is in a wooden box in the garage.
Could it be that cables pick up the noise?

Can somebody with a decent amp just test if he can here computer noise?

Joenco

Daniel Drummond · Oct 19, 2003, 12:41 AM

This may sound really weird but try loading reverb r, from Max effect's package (you don't need to connect it to anything) and watch if the noise goes away. Just do it and tell me. It removes all computer noise for me and I have absolutely NO CLUE why that happens... Go ahead and do it. You can find Max's plugins here: http://kxdev.narod.ru/ufx/ufxsetup.34.exe

Lex Nahumury · Oct 19, 2003, 01:36 AM

>>My comp is not in a computer case .
>>It is in a wooden box in the garage.

Very unwise unless you shielded the inside of that wooden box.
If you do not shield and ground properly, a PC will emite (radiate) lots of EMI.

My guess is that your amp + cables picks up that EMI and becomes audible
at high amplification. (amps can be very sensible to HF EMI)
Your un-shielded soundcard may also pick up EMI.

In case of dsp reverbs; a lot do produce static noise by design.

/LeMury

Joenco · Oct 19, 2003, 09:23 AM

Hello,

I tried the reverb r but have no luck.
I can still hear the noise.

Can somebody really put the sinal very loud and listen to the noise.
I would like to check this before I have to buy a case or check shielding.

Who can hear computer generated noise on the rear out?
Please can you check it with ASIO soft synth running.

Thank you,

TravelRec. · Oct 20, 2003, 06:51 AM

Hi!

First point: audio applications are very sensitive of missing ground connections!
Second: Noise is normally there, but really low. I can read noises at analog outs with a value of, say -60 db.
If your soundcard is near the motherboard or an other PCI-card then a lot of noise can be received. So get your card away from the mobo or the other card (if possible) or put it into a little shielding metal box (be careful with isolating this from other potentials!!!). And connect the metal front of the card with ground!

Cheers!

TravelRec.

Joenco · Oct 20, 2003, 06:45 PM

Thank you all for the help.

I do understand everything but I'm not sure if what I hear is normal or not.
Nobody has given a simple yes or no to my question if they can also hear computer noise if amplification is really very loud.
I know hum and hiss is normal but I do not know if I should hear my mouse moving and screen redraws or harddisk traffic.
The computer noise is really clear if I start ASIO applications.

I will record some noise so you can hear it but can I include it as attachement?

Thank you,

Daniel Drummond · Oct 20, 2003, 08:50 PM

I used to be able to listen to mouse moves and other stuff as you describe when I had an SBlive. With Audigy 1 I was also hearing them until I loaded Reverb R and they were gone. Then I changed my computer's processor fan and guess what: the computer noise is gone! And I don't need the Reverb R trick...

Lex Nahumury · Oct 21, 2003, 02:59 AM

Quote:

Originally posted by Joenco
Nobody has given a simple yes or no to my question if they can also hear computer noise if amplification is really very loud.

The answer is; No, I don't hear any (computer generated) noise at
high amplifications besides the normal noise floor.

1. shield and ground your PC..!
2. check your PSU. maybe its crappy - cant handle the load causing spikes etc..
3. try to leave as much space between Soundcard and Videocard (or any card)
4. maybe your soundcard doesn't filter it's powerlines correctly.
5. maybe your mobo doesn't filter/regulate it's powerlines correctly.
etc, etc..

/LeMury

Joenco · Oct 21, 2003, 07:57 AM

Thank you,

Now I know I have to look further.
I try something new this evening.

Joencoi

daad · Apr 7, 2005, 11:53 AM

Hi!
I had the same problem, but I finally solve it. My computer is Athlon - VIA based system and I use PCI Latency Patch. When it is set to cool the processor a computer noise appears. When above setting is set off, processor become warmer but computer noise disappears

. It is all about GeorgeBreese PCI Latency patch v0.20.

Cheers!

/Darek

jiiteepee · Apr 7, 2005, 12:04 PM

Hi

If any of you, with strange noises, is using USB mouse, and noise appears when moving
mouse across the screen (graphics), then it may be caused by too high sampeling rate
set to mouse.

Source: http://www4.head-fi.org/forums/showthread.php?t=112461

jiitee

elchhome · Apr 7, 2005, 01:50 PM

Hi folks,

I would first try to mute all analog inputs i.e. Micro, Line-in, AUX-in, TAD-in, CD-in.
Especially the Micro-in produces much noise ...

Oct 18, 2003, 10:16 PM	#1
Joenco DriverHeaven Junior Member Join Date: Aug 2003 Posts: 37 Rep Power: 0	Computer noise Hello all, My card is Audigy 2 SB0240 If I pump up my output level on my amp to test listen for background hiss, I can hear very good computer noise. It is very loud (compared to normal hiss) when starting ASIO appllications like reaktor. It is related to the ASIO buffer as it changes pitch when changing latency. It is also related to most computer hardware like graphic card, mouse, IDE traffic etc. I can here noise if I move my mouse or drag windows. Once again one can not here this noise when listening at normal volume. I listen to this noise with poweramp. 250W RMS and alike speakersystem. Is this noice normal or should I look for things like shielding or grounding? Thank you, Joenco

Oct 18, 2003, 10:51 PM	#2
Robert McClelland PAX Tweaker, PAX Expert. Join Date: Jun 2002 Location: Somewhere in Wood County Ohio Same Town :) Posts: 10,647 Rep Power: 196 System Specs	Did you used driver cleaner installing new sound drivers? __________________ "XTREME AUDIO IS CRAP!" "There no support for it. It's crapist card on face of the earth it should be throw into the sun" http://www.speedtest.net/result/1949536385.png

Oct 18, 2003, 10:57 PM	Thread Starter #3
Joenco DriverHeaven Junior Member Join Date: Aug 2003 Posts: 37 Rep Power: 0	Fresh install Hello, This is a fresh installl with updated drivers only. My comp is not in a computer case . It is in a wooden box in the garage. Could it be that cables pick up the noise? Can somebody with a decent amp just test if he can here computer noise? Joenco Last edited by Joenco; Oct 18, 2003 at 11:06 PM.

Oct 19, 2003, 12:41 AM	#4
Daniel Drummond DriverHeaven Senior Member Join Date: Dec 2002 Location: Brazil Posts: 1,137 Rep Power: 0	This may sound really weird but try loading reverb r, from Max effect's package (you don't need to connect it to anything) and watch if the noise goes away. Just do it and tell me. It removes all computer noise for me and I have absolutely NO CLUE why that happens... Go ahead and do it. You can find Max's plugins here: http://kxdev.narod.ru/ufx/ufxsetup.34.exe __________________ www.palcomp3.com.br/ed

Oct 20, 2003, 06:51 AM	#7
TravelRec. Alternative Audioproductions Join Date: Sep 2003 Location: Germany / Sachsen-Anhalt Posts: 1,710 Rep Power: 0	Hi! First point: audio applications are very sensitive of missing ground connections! Second: Noise is normally there, but really low. I can read noises at analog outs with a value of, say -60 db. If your soundcard is near the motherboard or an other PCI-card then a lot of noise can be received. So get your card away from the mobo or the other card (if possible) or put it into a little shielding metal box (be careful with isolating this from other potentials!!!). And connect the metal front of the card with ground! Cheers! TravelRec. __________________ Always take a look behind.

Oct 19, 2003, 01:36 AM	#5
Lex Nahumury DH Senior Member Join Date: Jan 2003 Location: The Netherlands Posts: 1,932 Rep Power: 64	>>My comp is not in a computer case . >>It is in a wooden box in the garage. Very unwise unless you shielded the inside of that wooden box. If you do not shield and ground properly, a PC will emite (radiate) lots of EMI. My guess is that your amp + cables picks up that EMI and becomes audible at high amplification. (amps can be very sensible to HF EMI) Your un-shielded soundcard may also pick up EMI. In case of dsp reverbs; a lot do produce static noise by design. /LeMury

Oct 19, 2003, 09:23 AM	Thread Starter #6
Joenco DriverHeaven Junior Member Join Date: Aug 2003 Posts: 37 Rep Power: 0	Hello, I tried the reverb r but have no luck. I can still hear the noise. Can somebody really put the sinal very loud and listen to the noise. I would like to check this before I have to buy a case or check shielding. Who can hear computer generated noise on the rear out? Please can you check it with ASIO soft synth running. Thank you,

Oct 20, 2003, 06:45 PM	Thread Starter #8
Joenco DriverHeaven Junior Member Join Date: Aug 2003 Posts: 37 Rep Power: 0	Thank you all for the help. I do understand everything but I'm not sure if what I hear is normal or not. Nobody has given a simple yes or no to my question if they can also hear computer noise if amplification is really very loud. I know hum and hiss is normal but I do not know if I should hear my mouse moving and screen redraws or harddisk traffic. The computer noise is really clear if I start ASIO applications. I will record some noise so you can hear it but can I include it as attachement? Thank you,

Oct 20, 2003, 08:50 PM	#9
Daniel Drummond DriverHeaven Senior Member Join Date: Dec 2002 Location: Brazil Posts: 1,137 Rep Power: 0	I used to be able to listen to mouse moves and other stuff as you describe when I had an SBlive. With Audigy 1 I was also hearing them until I loaded Reverb R and they were gone. Then I changed my computer's processor fan and guess what: the computer noise is gone! And I don't need the Reverb R trick... __________________ www.palcomp3.com.br/ed

Oct 21, 2003, 07:57 AM	Thread Starter #11
Joenco DriverHeaven Junior Member Join Date: Aug 2003 Posts: 37 Rep Power: 0	Thank you, Now I know I have to look further. I try something new this evening. Joencoi

Apr 7, 2005, 11:53 AM	#12
daad DriverHeaven Newbie Join Date: Apr 2005 Location: Lodz, Poland Posts: 7 Rep Power: 0	Hi! I had the same problem, but I finally solve it. My computer is Athlon - VIA based system and I use PCI Latency Patch. When it is set to cool the processor a computer noise appears. When above setting is set off, processor become warmer but computer noise disappears . It is all about GeorgeBreese PCI Latency patch v0.20. Cheers! /Darek

Apr 7, 2005, 12:04 PM	#13
jiiteepee HardwareHeaven Senior Member Join Date: Apr 2005 Location: FI Posts: 400 Rep Power: 0	Hi If any of you, with strange noises, is using USB mouse, and noise appears when moving mouse across the screen (graphics), then it may be caused by too high sampeling rate set to mouse. Source: http://www4.head-fi.org/forums/showthread.php?t=112461 jiitee

Apr 7, 2005, 01:50 PM	#14
elchhome DriverHeaven Newbie Join Date: Jun 2004 Posts: 9 Rep Power: 0	Hi folks, I would first try to mute all analog inputs i.e. Micro, Line-in, AUX-in, TAD-in, CD-in. Especially the Micro-in produces much noise ...