Add 1 to centre tap in reverse_fir() #3
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High pass filter should invert all coefficients of low pass filter, then add 1 to the centre tap, not the last tap.
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While adapting this code to use in my own project, I felt sure there was something wrong with reverse_fir().
High pass filter should, I think, invert all coefficients of low pass filter, then add 1 to the centre tap, not the last tap.
Prepared to be told I've missed something blindingly obvious :)