Improve your aural skills with the Helices plug-in.
Identifying frequency content is one of the most important aural skills we feel you need to develop. Helices will help you develop these skills by using standard filters to effect the timbre of a signal. Specifically, you can drill using five filter types over a ten octave range.
Fig. 1 Boost filter
Fig. 2 Bandpass filter
Fig. 3 Notch (band reject) filter
Fig. 5 High pass filter
Fig. 5 Low pass filter