This feedback produced by my new MacBook Pro is a little less harsh. I attempted to control the way it was feeding back by moving a cupped hand up and down just above the built-in mic hidden under the left hand speaker grill. The closer you get to the cupping the mic the louder the feedback is. Actually I wasn’t sure where the mic was when I started this experiment and used my cupped hand to locate it. By the way, cupping the mic is generally a bad idea. I hope it doesn’t void my warrantee.

Cupped Hand Controlled Feedback

The following sound contains piercing high frequencies. I don’t suggest playing it back at at anything higher than a very low volume.

This sound was produced accidentally after starting up Live and opening a recent document on my new MacBook Pro. A couple of tracks were record enabled and the input settings reverted to the default because Live 8 did not know about my external sound card yet. Luckily my MacBook Pro’s audio out was not plugged into my mixer, so the sound was only amplified through the internal speakers.

Naturally, my first inclination was to capture the feedback. My second was to try and control it by cupping the mic hidden under the left hand speaker grill. I had some success doing this. For now here’s the original feedback.

Playback With Caution!