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4 Band Shifter

Pitch Shifter / Time Stretch Plugin by Bitterspring
4 Band Shifter
4 Band Shifter by Bitterspring is a Virtual Effect Audio Plugin for Windows. It functions as a VST Plugin.
Open Source
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4 Band Shifter is a VST Plug-in that is able to shift independently the pitch of 4 adjacent, user-definable frequency bands. Code is based on Stephan M. Bernsee's article, Pitch Shifting Using Fourier Transform.


  • Fast: it uses FFTW library to perform fast STFTs.
  • Can shift each frequency band independently in a range of (-12, +12) semitones.
  • Big display representing the frequency bands / gain per band / volume per band.
  • Can work in continuous or discrete mode.

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