Method and circuit arrangement for improving the division of an electric frequency mixture among a plurality of frequency sub-bands, in particular in the case of frequency duplexers for multipath loudspeaker combinations

摘要

To improve the division of an electric frequency mixture by means of filters over a plurality of frequency sub-bands, in particular in the case of frequency duplexers for multipath loudspeaker combinations, where in particular the electric faults in the transient response caused by the filters themselves are identified in the case of pulses by comparison with the original electric signal and are distributed by a further filter stage among the frequency sub-bands in which the corresponding electro-acoustic transducers are located, in such a way that the electric faults can also be compensated in the acoustic range, multiple passes through the described single correction stage are also possible. A circuit arrangement suitable for carrying out this measure comprises a first filter stage, the combination of the frequency sub-bands in a summator, a comparator which compares the combined frequency sub-bands with the original signal and generates a composite correction signal, and also a second filter set which again divides the composite electric fault and allocates it to the frequency sub-bands in which the corresponding acoustic transducers are located which can also process the corresponding frequency range. <IMAGE>