Improve your aural skills with the Concha plug-in.
Designed to pick up where Helices and Helices Pro leave off, Concha challenges you with infinite variability. Center/cutoff frequency, boost/cut, and Q can all be under your control. You may even have to select one of five filter types. The more choices you give yourself, the harder it becomes to match your EQ's sound to the target EQ's sound.
Fig. 1 Boost filter
Fig. 2 Bandpass filter
Fig. 3 Notch (band reject) filter
Fig. 5 High pass filter
Fig. 5 Low pass filter