i got a maudio pro keys 88 and while using the usb output to interface to a software synth, i get a lot of noise, is there a way to get rid of this? am i doing something wrong? am i better of using a seperate midi interface?

Could you tell a bit more about your setup? computer, audio interface, connections etc.

-ED-

[This message has been edited by 3351 (edited 06-21-2006).]

i am using a windows xp desktop amd athlon xp1900. delta 1010 soundcard using for midi (not in the scenario though), like i said i was using the usb connection on the maudio and lots of noise was present. just usb straight into the computer.

How is everything connected power wise? Sounds like there's a ground loop.

Generally to avoid getting ground loops everything in use must share the same ground.

basically what you want to do is run everything from the same power outlet. Anything works. I'd recommend getting a good power conditioner with enough outputs to hook up all of your music stuff. But a cheap power bar with surge protection will do. As long as you can run all of the music stuf from the same power outlet.


Potentially (and only if the above doesn't help) the power supply on your PC could be the problem. I had to replace the power supply on my brand new G5. THe machine worked fine but the noise on it's audio outs and all USB and FIrewire connected audio devices was intolerable. Replacing the power supply helped a bit. I also had to disable processor idling and that killed the noise completely.

But I don't think you should worry about power supplies and CPU idling yet. Try the easy stuff first. Let me know how it goes.


-ED-

[This message has been edited by 3351 (edited 06-21-2006).]

Just found something on M-Audio KB you're using:



I didn't realize it was powered via USB. Another possibility here. Do you still have the 9V adaptor connected and power switched to AC when connected to USB?
If so, try switching it to USB power and remove the power cable. It should be fine either way but just in case you haven't had a chance to check.

Hey, took me a while. For some reason I thought the M-Audio is self powered.

-ED-

Ed,
The 19" rack version of the delta 1010 is selfpowered.
So you were'nt wrong