Optimization of multirate crossover filters
Matti Hämäläinen · 2003
A digital crossover filter design procedure is developed based on multirate complementary filters. The crossover optimization procedure includes the determination of the optimal multirate filter structure and the overall optimization of the cascaded linear phase multirate FIR filter system. The filter structure can be optimized for several cost criteria e.g. for minimal run-time memory or computational complexity. The following crossover filter optimization is based on frequency sampling method in the weighted least-mean-squared sense. The weighting function combines the weighting for the auditory system and the audio reproduction system.