DtBlkFx by Darrell Barrell is a freeware Fast-Fourier-Transform (FFT) based Multi effect VST plug-in for Windows and Mac.
DtBlkFx v1.1 features
- Precision parametric equalizing with sharp-roll off
- Harmonic based (or comb) filtering
- Various types of noise control
- Frequency shifting
- Frequency masking
- Realtime spectrogram (waterfall) display of input and output sounds