Autowah

[code]

Original a guitarix effect written in Faust, autowah is an automatic wah pedal. These typically involve some sort of envelope follower on an hooked up to the cutoff frequency of the wah filter

Parameters

 96 "2(++)4(?+?+)" prop 0.5 maytrig dup
 440 0.3 220 pluck dcblk swap 0.001 0.01 0.2 tenvx * 
 1 1 100 autowah