Hello all! I have implemented a multi-band compressor (3 bands). However, I am not really satisfied with the splitting of the bands, they have quite a large overlap.
What I do is taking the input singal, perfoming a low pass filter (say 250Hz) and use the result for the low band#1. Then I subtract the LP result from the original input and do a lowepass again with a higher frequency (say 4000Hz). The result is my mid band#2, and after subtracting again the remaining signal is my highest band#3. I assume this proceedure is appropriate, please tell me otherwise The question is now the choise of the filter. I have tried various filters from the music-dsp code archive, but i still havent found a satisfiying filter. I need a steep LP filter (12db/oct or more), without resonance and fewest ringing possible. The result subtracted from the input must works as a HP filter. Are there any concrete suggestions how such a LP filter should look like, or is there even a different, better way to split the audio signal into 3 bands (or N bands)? I know I can use FFT, but for speed reasons, I want to avoid FFT. Regards, Thilo Koehler -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
