Patent ID: 8290185

Claim:
A method of compensating for audio frequency characteristics of an audio/video (AV) apparatus, the method comprising: calculating a listening distance between the AV apparatus and a listener; calculating a distance between a speaker mounted on the AV apparatus and a neighboring reflective surface; selecting a spatial frequency compensation filter value and a speaker frequency characteristic compensation filter value in accordance with the calculated distances; and compensating for frequency characteristics of an audio signal by selectively combining the spatial frequency compensation filter value and the speaker frequency characteristic compensation filter value in accordance with the calculated distances, wherein a setting of the spatial frequency compensation filter value and the speaker frequency characteristic compensation filter value comprises: if a difference between the distance between a left channel speaker and the neighboring reflective surface thereof and the distance between a right channel speaker and the neighboring reflective surface thereof is larger than a predetermined threshold value, the spatial frequency compensation filter value and the speaker frequency characteristic compensation filter value being set differently with respect from one to another in accordance with channels and the calculated distances; and if the difference between the distance between the left channel speaker and the neighboring reflective surface thereof and the distance between the right channel speaker and the neighboring reflective surface thereof is equal to or smaller than the predetermined threshold value, the spatial frequency compensation filter value and the speaker frequency characteristic compensation filter value being commonly set with respect from one to another in accordance with the calculated distances.