AudioRetoucher can change the pitch and tempo of a sound track in real time. With this program, the sound of an instrument or voice might be modified slightly, to make a vocalist or instrumentalist's job easier in dealing with difficult keys. Vocal pitch may also be speeded up to "smooth out" a performance, or to make the singer sound younger. Basically, this software tool re-samples the audio strip, preserving or altering the amplitude modulation, rates, etc., so that it produces a different output file.
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