Patent ID: 8422690

Claim:
An audio reproduction apparatus comprising: a first acquisition unit configured to acquire one or more audio signals that has been recorded by an audio recording apparatus with use of one or more microphones included in an audio input unit that the audio recording apparatus comprises, an angle of a disposition location of each of the one or more microphones relative to a reference axis extending in one direction from an origin at a predetermined location of the audio input unit, and a degree of amplification of the audio signal from each of the one or more microphones at a time of recording of the one more audio signals by the audio recording apparatus; a determination unit configured to determine a reference location on the reference axis; a calculation unit configured to, for each virtual pick-up location of the one or more microphones determined based on the angle and the degree of amplification of the microphone acquired by the first acquisition unit, calculate a relative location of the virtual pick-up location relative to the reference location, each of the virtual pick-up locations being determined as a location that is on an axis having said angle relative to the reference axis and extending from the origin and that is farther from the origin as the degree of amplification is higher and closer to the origin as the degree of amplification is lower; a second acquisition unit configured to, for each of the one or more microphones, acquire a head-related transfer function corresponding to the relative location of the microphone that has been calculated by the calculation unit; and a generation unit configured to, for each of the one or more audio signals acquired by the first acquisition unit, generate a pseudo surround audio signal based on the audio signal with use of the head-related transfer function acquired by the second acquisition unit.