Code examples as discussed in articles on https://bensherlock.co.uk
Generates coefficients for FIR filters with various window options.
Full article at: https://bensherlock.co.uk/2015/08/21/windowed-sinc-filter-factory-in-c/
Full article at: https://bensherlock.co.uk/2015/09/15/mirrored-delay-line/
Full article at: https://bensherlock.co.uk/2015/09/14/mirrored-fifo/
Writes audio data to a wav file. Can also append to a wav file and updates the header information.