A Rust implementation of the Parks-McClellan filter design algorithm for finding optimal Chebyshev FIR filters.
The construction of this filter is currently not suitable for use in a real-time DSP thread, so construct the filter before using it.
Includes more than 450 integration-level tests comparing the output to code from the canonical implementation. Not guaranteed to be 100% byte-for-byte exact to the canonical implementation for all inputs, but it should be pretty dang close.
- More refactoring
- Remove the 128-sample limit on impulse response length
- Remove the 10-band limit
- Write a bunch of unit-level tests
- Make the maximum number of iterations a parameter, or at least make it a higher limit
- Write some "functional" tests (testing stop-band attenuation, for example)
- Fix possibilities of dividing by zero
- Write a 100%
f64version