Comment 0 for bug 1581721

The recently announced PLAYdifferently Model 1 hardware mixer (http://playdifferently.org/ ) features an interesting and innovative new system instead of the conventional 3 band EQ found on all DJ mixers and DJ software. Each channel has two knobs for its "SCULPT" EQ:

'SCULPT is a semi-parametric swept bell filter, and consist of two controls,FREQ which sets the centre frequency and CUT/BOOST which adjust the gain or a attenuation at this frequency. The level of cut/boost is asymmetric; maximum boost is limited to +8dB, while the cut is extended to -20dB. Sculpt has a wide Q and a frequency range that covers almost seven octaves.'

plus two knobs for "contouring" LPF and HPF:

'As the name implies these two controls allow you to “contour” the frequency range of the audio signal. They consist of low Q, High-Pass and Low-Pass filters designed not to add colour to the sound as they are swept across their frequency range.'

With Mixxx's EQ effects system, this kind of setup could be used with any DJ controller with the conventional 3 knobs for EQs. It would require having the LPF and HPF combined into one knob like the are for the existing filter effect's superknob. The other two knobs would be used like the FREQ and CUT/BOOST knobs on the PLAYdifferently Model 1. For controllers with the conventional 3 EQ knobs plus a filter knob, a different version of the EQ effect could be provided without combining the HPF+LPF into a superknob.