Darrell Tam has released DtBlkFx, an FFT based VST effect plug-in for Windows. It combines elements of distortion, filtering and synthesis and has an easy to use interface and lets you do all kinds of things, such as:
- Brick-wall (sharp roll off) filtering.
- Harmonic based filtering.
- Various types of noise control.
- Frequency shifting.
- Something similar to vocoding.
- Many unique effects.
DtBlkFx is freely distributable and is covered by the terms of the GNU licensing agreement. Source code is included.