no more larsen plz

January 6, 2011 4:03 AM

how to avoid audio feedback ?

I've just plugged a mike into my loop pedal, so I can both loop my electric guitar and ambient sounds. The problem is that, since my amplifier has to be turned on continuously, audio feedback makes it pretty hard to make music. How can I solve that problem ?
posted by nicolin (2 comments total)

I think your options are to use headphones, position the mic as far away from your amp as possible and pointing in the other direction, and/or to reduce the volume.

Hey, we should do something involving looping for our collaboration!
posted by umbĂș at 7:10 AM on January 6, 2011

The problem is that microphones and guitars generally have quite difference impedence levels. The guitar amp is designed for different frequency response than a typical mixing board/mic input. Basically there is a lot of high frequency that is picked up by microphones, often imperceptible to our ears, gets blown up by the way the guitar amp is designed. You have to keep the high frequency and mid settings to 0 to mitigate this, but it isn't always successful.

A "Re-amp" box might work for this. It is typically used for guitar signals that have been recorded direct (ie, a mic/line input). It converts the line signal to a signal that is compatible with a guitar amp, so you can play the signal out of a guitar amp.
posted by dobie at 4:29 PM on January 6, 2011

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