The lowpass command applies a simple first-order lowpass RC filter to an audio clip.
Example.
Input:
f:=unapply(periodic(sign(x),x,-1/880,1/880),x); |
s:=apply(f,soundsec(3)):; |
playsnd(lowpass(createwav(s),1000)) |
Output:
The sound of the periodic signal after a simple first-order lowpass RC
filter has been applied.