Patent ID: 8358790

Claim:
A band-splitting time compensation signal processing device in an audio system for driving a plurality of speaker units, which have reproduction bands split, with a single amplifier for each channel via a crossover network circuit, the band-splitting time compensation signal processing device comprising: a band-splitting circuit per channel for extracting a signal of a high-frequency band component or low-frequency band component from an input signal, obtaining a signal of the low-frequency band component or high-frequency band component by subtracting the extracted signal of the high-frequency band component or low-frequency band component from the input signal, and outputting the extracted signal and the obtained signal so that the high-frequency band component and the low-frequency band component are outputted as respective band-split signals; a delay circuit per channel for delaying, for adjusting arrival time, at least one of the two band-split signals output from the band-splitting circuit; and a mixing circuit per channel for combining the band-split signals after the at least one of the band-split signals is delayed by the delay circuit, and for outputting the combined signal to the amplifier, wherein the band-splitting time compensation signal processing device carries out independent characteristic correction for each of the speaker units by adjusting the splitting frequency of the band-splitting circuit with that of the crossover network circuit, and adjusts and sets the time axes of the individual speaker units independently via the delay circuit inserted between the band-splitting circuit and the mixing circuit.