i was watching buckethead perform "whitewash" and at around 3:12 and 3:24, he uses a very high pitched effect. what is this effect called? link to video: https://www.youtube.com/watch?v=8akmP6Sjv2o&feature=PlayList&p=D87CD1BBC6B2562E&index=3
It is not the effects pedal that makes the high pitched "Squeal" that you hear. The technique is called "pinch harmonics".
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