NOTE: All inputs can have .kr rate UGens plugged in.
Fhn2DC.ar(minfreq: 11025, maxfreq: 22050, urate: 0.1, wrate: 0.1, b0: 0.6, b1: 0.8, i: 0.0, u0: 0.0, w0: 0.0, mul: 1.0, add: 0.0)
Fhn2DC.kr(minfreq: 40, maxfreq: 100, urate: 0.1, wrate: 0.1, b0: 0.6, b1: 0.8, i: 0.0, u0: 0.0, w0: 0.0, mul: 1.0, add: 0.0)
Arguments:
| minfreq, maxfreq | freq iteration | 
| rateu | update rate for u | 
| ratew | update rate for w | 
| b0 | equation constant | 
| b1 | equation constant | 
| i | arbitrary external impulse; i.e. pulse wave, trigger, lfnoise, or nothing. | 
| initu | reset value for u | 
| initw | reset value for w |