AUTOMATIC SOUND FIELD CORRECTION DEVICE

摘要

An automatic sound field correction device corrects phase characteristics of audio signals of each channel and outputs the corrected signals to a speaker. The phase characteristics are corrected to correct disturbance of a phase due to characteristics of each speaker. In correcting the phase characteristics, the phase characteristics of audio signals of a plurality of channels are measured for each of the channels in the first place to obtain measurement phase characteristics. Then, phase characteristics sufficiently approximate to the measurement phase characteristics are generated as estimated phase characteristics by means of a phase characteristic model or phase characteristic data prepared beforehand. Thereafter, the phase characteristics of the audio signals are corrected based on the estimated phase characteristics.