Bedroom Producers Blog has released BPB Dirty Filter, a freeware tube distortion effect in VST2, VST3, AU, and AAX plugin formats. It features a pair of resonant filters that can distort a specific area of the frequency spectrum.
A spokesperson told us, "In a way, BPB Dirty Filter is similar to multi-band distortion but with a more straightforward workflow. Choose a frequency that you'd like to distort and increase the Drive parameter to add resonance and tube saturation. With the Drive knob set to zero, BPB Dirty Filter operates as a transparent filter plugin. In this mode, it is great for cleaning up low-frequency hum or removing high-frequency noise. When the Drive knob is set above 50, BPB Dirty Filter transforms into a powerful distortion effect. Use high amounts of distortion in tandem with the Mix knob to keep some of the original audio."
Pricing and Availability:
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