Like on an electronic music synthesizer, a low frequency oscillator will modulate the cutoff frequency of a highpass filter up and down. Variables1. LFO frequency: speed of up and down sweeping.2. lower cutoff frequency of filter3. upper cutoff frequency of filter4. LFO starting phase: in degrees, from -180 to +180, default 0.Requirements:

Ссылка: http://www.shel..idsky/hplfo.zip