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 Sifft by xoxos is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Product Sifft
Developer xoxos
Price (MSRP)
Type / Tags Sampler
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
  Download Released
Supported Sample Formats (loads or saves) include
Audio Demos
Miscellaneous Information
Copy ProtectionNone
Free (Public Domain)
Max. 6 items
Latest Version Changes [view all]

Sifft VST (Sample + Inverse Fast Fourier Transform) is an open source FFT based wav player that allows separate control over time and pitch. This simple method of timestretching uses the phase difference between blocks to reproduce accurate pitch at the expense of creating diffusion due to phase being misaligned on stretched/compressed blocks. The result sounds noisy with minor adjustments but reproduces accurate pitch even with extreme modification (e.g. 1024 times timestretching or much more is possible). The sample may be scanned as if it were "frozen". With the inclusion of frequency shifting, Sifft is well suited for experimental sounds and percussion resynthesis.

Features include:

  • loads 8, 16, or 24 bit wavs.
  • 3 waveform interpolation modes: none (floor), linear, and cubic.
  • emulated downsampling to 1 bit.
  • a bunch of filter modes (low, band, high, cut, peak in Moog, Simper svf or RBJ biquad).
  • curveable envelopes and modulating LFO contours.

Sifft includes the core process as a SEM module for SynthEdit users and c++ source for the process with notes. A selection of other SEMs are included, e.g. envelopes and filters.


Made with SynthEdit
Latest User Reviews Average user rating of 0.00 from 0 reviews


Discussion: Active
12 November 2012 at 11:34pm

Where can I download it?

13 November 2012 at 11:56am

Just open your eyes and press the downloads in blue text

13 November 2012 at 11:01pm

Hmm, just yesterday the downloads link just brought me to the website.

22 November 2012 at 12:50pm

Very cool plug! But current version (0.0) very unstable in my DAW (Sonar 8.5.3 x64 via bit bridge). Sometimes I get these jBridge overflow errors sometimes it just crashes / freezes the whole thing.

23 September 2013 at 11:44pm

Not referenced in his pages, I don't know why... but the zip file is downloadable directly with this link below (don't be afraid, it is a direct link to his own website) :


20 August 2014 at 12:38am

This plugin is so-o-o-o-o cool, I would give it 5 if only didn't see it so late :- (.

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