How can I ADD guitar feedback?

I'm searching high and low trying to figure out how to add some guitar noise/feedback to a song that I'm working on. Everything I am finding through Google is how to eliminate guitar feedback. I'm using Amplitube and plugging in via an M-Audio interface. Just wondering if anyone has any suggestions or knows of any effects that might help. Thanks!!

Turn it up! and stand in front of your monitors. :D I really don't recommend this, but it will work. There was a plugin a while back that was suppose emulate feedback, but you guessed it... it sucked (and it was $100). What exactly are you trying to do?

It's all in the distortion, any mainstream amp isn't going to allow feedback. I made some clones of that Boss feedback pedal, here they are - LP filter that feedbacks into itself w/a clipper to control it, pitch vibrato

There's a feedback emulator pedal that can be purchased from amplitube custom shop. But it only does an emulation on single notes. An alternative is to use a compressor on a high setting in front of an overdrive sound, which will help to get feedback from your monitors. Pete

There's also this diamond.

At $99 I think I will pass. OP think of your computer system and software as a regular amp and do what you would normally do to induce feedback. You noisy blighter, you! :D

I WISH that I could be a noisy blighter! Not always possible, unfortunately.

Compress the guitar liberally and then, turn it up a bit in the loudspeakers. Feedback will be somewhat more controllable and more harmonic pitches will be available at a lower volume.

If you want to add feedback to an already recorded track that has none, play it loud through your monitors along with an open mic (also coming out of the monitors). Record the mic track, you may have to eq it a bit to get it to take off at your desired frequencies, but then you can just mix it in with your original guitar tack.

There must be a looped sample of guitar feedback out there somewhere! Google maybe.