 Audio Background Noise Problems Anybody?, Noisy audio on my Emac G4 700 mhz |
 Tue 8 Jul 2003, 04:11
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 Newbie Group: Members Posts: 1 Joined: 08-Jul 03 From: Easton - US Member No.: 20,943  |
Emac Audio Problem
My brandnew Emac 700mhz has a good amount background noise in its audio output making it unusable for professional recording applications like Cubase. The high pitched sound changes loudness and frequency depending on the position of the mouse on the screen so it seems that maybe there's some stray voltage coming in from another sub system (graphics perhaps?) I went and bought a professional USB audio adapter from Edirol ($250) hoping that may fix the problem. It brought the noise level down at least by 3 times but the same ever changing noise is still there in the background. It seems to also transmit itself somehow through my MIDI devices as well and then show back up on the MIDI device's audio output. It looks like a design flaw to me. Maybe some components that should have been shielded better on the motherboard. I need help. This computer turns out to be unusable for any kind of music recording. My old iMac has none of these problems and is totally noise free even with just the built in 1/8" audio output. Any advice how to fix this? I don't want to have to buy another computer. Thanks, Alan Steward abaco@go2mypage.com |
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Mon 11 Aug 2003, 19:44
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Newbie Group: Members Posts: 4 Joined: 26-Nov 02 From: Alpujarras - ES Member No.: 9,597 |
I have had exactly the same problem, having upgraded from a G3 i-Mac to a G4 eMac, and I reckon the main problem is not actually to do with grounding, etc (although this will make things quieter) but with THE FAN. G3 iMac's have a different cooling system and are beautfully quiet, but this damn eMac is a noisy bastard. The fan can also cause electrical interference as well as audio noise.
Like you, I find recording audio (via a mike) virtually impossible - it sounds like there is a hoover in the background! However, I don't seem to have any major problems with audio inputs other than mikes (guitar, etc) now with Midi inputs and VST instruments, using Cubase SX and Reason and an external Midi module. If you are using an external mixer, try disconnecting the leads one by one, and you might identify a grounding problem when the interference level drops. Right now I am in search of a quieter fan to replace the inbuilt one. I'll let you know if I find one, and if anyboy can help me in this, please do! Thanks! by the way, you didn't mention - are you using the latest OS? this definitely helps. Earlier versions had mega-problems with audio. -------------------- MacPro (2x2.66Ghz, 5gigRAM) OSX 10.4.10: PT, Cubase, Nuendo
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Posts in this topic
abaco Audio Background Noise Problems Anybody? Tue 8 Jul 2003, 04:11
Synthetic the monitor is the biggest culprit of background n... Tue 8 Jul 2003, 17:16 Saurabh Sethi One thing you should do that might help is make su... Wed 9 Jul 2003, 17:28 dazz QUOTE (abaco @ Jul 8 2003, 03:11)This compute... Mon 14 Jul 2003, 16:07 kaboombahchuck Another thing to consider....
Make sure your devi... Tue 15 Jul 2003, 00:47
Fusion Head This reply comes a bit late, sorry - I have just d... Sun 28 Sep 2003, 02:18 |
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