Patent ID: 8634275

Claim:
An audio processing device for processing a plurality of audio signals generated by a plurality of sound receiving devices, the audio processing device comprising: a target sound emphasis part adapted to generate a target sound emphasized component by identifying a target sound component from the plurality of audio signals generated by the plurality of sound receiving devices and emphasizing the target sound component, each of the audio signals containing a target sound component from a target in a predetermined direction and a non-target sound component; a stereo processing part adapted to generate a stereo component of a plurality of channels from the plurality of audio signals; a first adjustment part adapted to adjust a sound pressure level of the target sound emphasized component generated by the target sound emphasis part according to a first adjustment value; a second adjustment part adapted to adjust a sound pressure level of the stereo component generated by the stereo processing part according to a second adjustment value; a first mixing part adapted to mix the target sound emphasized component adjusted by the first adjustment part and the stereo component adjusted by the second adjustment part with each other; a variable setting part adapted to variably set a zoom value which is changeable between a wide angle side and a telephoto side in relation to the target; and an adjustment control part adapted to control the first adjustment value according to the zoom value such that the sound pressure level of the target sound emphasized component adjusted by the first adjustment part exponentially decreases as the zoom value changes toward the wide-angle side, and to control the second adjustment value according to the zoom value such that the sound pressure level of the stereo component adjusted by the second adjustment part increases as the zoom value changes toward the wide-angle side.