Newbie level 3
I have an array coming from a digitizer. I do an fft on it and then I calculate the frequency bins and apply a 20kHz low pass filter. The next step would be to apply an ITU-R ARM 2 kHz filter on this array and the filter behaves like the green line curve in the picture. All I know is that the 0 dB point is at 2 kHz and the maximum of 6 dB is located at 7 kHz. The implementation has to done in C++.