Support Forums › Forums › FIR Designer M Support › Linear-phase brick-wall crossovers › Reply To: Linear-phase brick-wall crossovers
In Second view/group delay of your filter example I see group delay is same in whole band for each band(HF, MF, LF), but on different levels. For HF it is less then 1ms, for MF it is around 3ms and for LF it is around 20-30ms. Can bands be adjusted to same group delay ?
Another problem that I can’t solve is very steep crossover between LF and MF area(about 300Hz). Even Brickwall is chosen, in export system response graph it seems slope is not brick wall like at 2kHz(MF/HF point). At 300Hz it looks more like LR4 slope shape. I tried to get brick wall shape at 300Hz, but I couldn’t. How I can achieve brick wall shape at 300Hz crossover ?