In a soundfile, I'd like to remove a frequency and all its harmonics. What is the best solution in your opinion ?
Do a loop with 20 notch filters, one after another.
// f is the fundamental frequency
for (i=0; i++; i<21)
{
file.notchfilter(f*i);
}
Question : does each notch filter create some unwanted side-effects, and the fact that we use 20 filters one after another will create very high unwanted artefacts?Is it possible to design a filter that will remove 20 frequencies in ONE STEP ? Then we wouldn't need to do a loop, just one pass wil be okay? Is it called a Comb filter ?
Other method ?
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