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FILTERBANK - Wrapper around filter to multiple filters

Usage:
  • out = filterbank(b,a,insig);
  • out = filterbank(b,a,insig,hopsize);

Description:

FILTERBANK(b,a,insig) filters the input signal with the filters described in a and b.

FILTERBANK(b,a,insig,hopsize) does the same, but only outputs every hopsize sample in the time domain.

If a and b are matrices then each row corresponds to a subband channel.

If insig is a matrix then filtering is applied along the columns.

If both insig, a and b are matrices the output will be 3-dimensional. First dimension is time, second dimension is frequency channel third dimension corresponds to the column of the input signal.
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