hcomb
interpolating comb filter
SYNOPSIS
#include <ugens.h>
float hcomb(sample,array)
float sample, *array;
hcmbst(&loopt,&xinit,&array,&sr)
float loopt,*array,sr,xinit;
DESCRIPTION
hcomb() is a feedback loop which will store and feedback the
signal continuously. Older inputs will decay over a specified reverberation time. Any frequencies in the input signal whose length in samples is close to an integral number
of the number of samples in the loop will be resonated since
there will be less cancellation. This represents an
improvement over
comb
in that the quantization of looptime
as it becomes shorter due to the integer sample length of
the loop is compensated for so that it may be precisely
tuned, even up to Nyquist. This loop must first be initialized with a call to hcombset(). which intializes an array for
use with an hcomb() filter. Note that this is a fortran sub-
routine and thus must contain arguments passed by address,
and the underscore following its name.
loopt is equal to 1/hz and array must be dimensioned at
(loopt * sr + 9).
[note: it's not clear that the hcmbset function actually
exists....]