gtfblib

A library of Gammatone Filterbank implementations

This package provides a variety of gammatone filterbank implementations, namely (references TBD):

• a pretty straight-up FIR implementation (complex or real)
• the one-zero gammatone filterbank
• Zhangli Chen's complex design
• more will be added as I have time

I try to make these implementations match MATLAB versions numerically, verified by regression tests.

Usage

All filterbanks are implemented as classes, which take various parameters during instantiation. The classes implement the methods process(indata), process_single(indata, channel), and _clear(). process(indata) uses and updates the filter states, so that block-based processing is possible. if needed, the _clear() method can be used to clear the state back to 0.