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How does a voice pedal change the sound of your voice going through a microphone? Answered

My friend, Sue, has a voice pedal that has hundreds of voices you can use to spice the songs you sing. Her brother used it once to do 'Alvin and chipmunks' just to have a little fun. While I was sitting there listening to her I was trying to figure out how that works. Her brother doesn't have a high pitch voice, it's actually pretty deep. It's not like he put a cloth over the microphone to muffle the sound or use a different voice.

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ROBOCOP603
ROBOCOP603

8 years ago

I'm not sure how it works either. Instead of a normal voice changer though, I use certain guitar pedals. I do this by having a non-powered lapel mic connected to an in-line power source [in other words a battery configuration to make it compatible with the pedal], and the pedal's output is connected to two daisy chained X-Mini II speakers. [This only works with some pedals.]

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Goodhart
Goodhart

11 years ago

There are two ways to change sound;  one is amplitude and one it frequency.
If the frequency changes the pitch is altered.   If the amplitude is changed, volume is altered (sound pressure). Since frequency is inversely proportional  to wavelength, a higher pitched sound will have a shorter wavelength.  Raising the frequency or shortening the wavelength then, will give the Chimpmunk sound.
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VIRON
VIRON

11 years ago

If you could record and playback a very short loop at different speeds at the same time, with speed differences of 6% per change of note, you would have a live analog pitch changer that is musically correct. It is easier to build but harder to program the same digital effect, which is not much different than autotune, I think.