A one zero filter. Implements the formula:
The input signal.
Feed forward coefficient.
+0.5 makes a two point averaging filter (see also LPZ1 ).
-0.5 makes a differentiator (see also HPZ1 ).
+1 makes a single sample delay (see also Delay1 ).
-1 makes an inverted single sample delay.
Output will be multiplied by this value.
This value will be added to the output.