THIS VIDEO IS RATED PG13 FOR BAD LANGUAGE, by Greyglitch.\r
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I broke one of these voice changers before. So instead of trying to really circuit bend it, I just added an input off the mic and an output off the speaker. From there I made a simple feedback loop controlled by a 1m pot. \r
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greyglitch.bandcamp.com/\r
facebook.com/greyglitch