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Look at how you are sending and receiving the signals. If the signal being sent is being monitored and receiving it's "OWN" signal twice, you will get a loop hum. Try this.
In your software set up:
1>send the signal out of your computer through your recording device.(usb, firwire,etc.) through one of it's outputs in the back (1 - 8 ? )
2> don't send it to the main l @ r stereo outs, this is causing the loop hum.
3>So you should't be hearing this track, but you can see the meters are playing, the audio is waiting to be sent back in.
4> set up a track to receive the new processed information. and send that track to it. So you are audio is going OUT say line 8 on your outputs
, goes through the guitar pedal, then back IN to say line 2, and is now playing your new processed sound. You can now push the volume on your OUTPUT channel to get more volume on the INPUT channel.
5> i think the reason you are getting the hum is what you are sendng out is going out through the L@R buss, and then back into it it again, creating a never ending LOOP.
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