Patent ID: 8204614

Claim:
An audio processing apparatus comprising: an audio processing unit operative to process a plurality of input audio signals respectively and to adjust the degree of emphasis required for the input audio signal according to an index which is input by a user and which indicates the degree of emphasis, the audio processing unit including a frequency-band-division filter operative to allocate a frequency band to each of the plurality of input audio signals according to the index, and operative to extract a frequency component belonging to the allocated frequency band from each input audio signal, an output unit operative to mix a plurality of input audio signals of which the degree of emphasis is adjusted by the audio processing unit and to output the signals as an output audio signal having a predetermined number of channels, a storage unit operative to store a plurality of indices and allocation patterns of the frequency band to be allocated to the input audio signal, associated with each other, where the frequency-band-division filter, in case that an index corresponding to a user input is not stored in the storage unit, refers to the allocation patterns stored in the storage unit based on an index nearest to the index and determines the allocation of frequency bands corresponding to the index for the input, by interpolating for the frequency band to be allocated.