Patent ID: 8750524

Claim:
An audio signal processing device by which a listener perceives sound reproduced by at least two real speakers placed in front of a listening position and at least two real speakers placed near ears of the listener as if the sound was reproduced by a virtual speaker imaginarily placed at a virtual position, said audio signal processing device comprising: an analysis unit configured to analyze a degree of correlation between a pair of right and left input signals; a control unit configured to control, based on a result of the analysis performed by said analysis unit, a ratio between (i) signals outputted from the real speakers placed in front of the listening position and (ii) signals outputted from the real speakers placed near the ears of the listener; and a division unit configured to divide each of the input signals into a high frequency component having a frequency higher than a predetermined frequency and a low frequency component having a frequency equal to or lower than the predetermined frequency, wherein said analysis unit is configured to analyze a degree of correlation between the high frequency components obtained as a result of the division performed on the input signals by said division unit, and said control unit is configured to control the ratio so that: a higher proportion of each of the high frequency components is outputted from the real speakers placed in front of the listening position when the degree of correlation between the high frequency components is determined to be high as a result of the analysis performed by said analysis unit; and a higher proportion of each of the high frequency components is outputted from the real speakers placed near the ears of the listener when the degree of correlation between the high frequency components is determined to be low as the result of the analysis performed by said analysis unit.