Features of Adaptive Filtering of Sound Broadcasting Signals in the Frequency Domain

Various filters used in modern devices for transmitting and processing audio signals are not adaptive to these signals, therefore proposals are being developed use of adaptive filtering based on the modulation representation of signals. It is proposed, using filtering based on nonlinear transposition of the spectrum of a complex signal and its limitation, to resolve the contradiction between the quality of filtering and the speed of restructuring of filter parameters. It is shown that adaptive filtering of broadcast signals allows the formation of a continuous signal in a band, the central frequency of which shifts in accordance with the shift of the maximum of the envelope of the amplitude spectrum, and the passband changes in accordance with the embedded patterns.