Patent ID: 8958584
Filing Date: 2015-02-17
Classification: H04S

Abstract:
1. An apparatus for removing crosstalk in each of audio signals of a plurality of channels, the apparatus comprising: a position recognizer which recognizes the position of a listener; a filter update necessity examiner which examines whether or not the recognized position is in an optimum listening region determined according to a current head related transfer function; a storage unit which stores a head related transfer function with respect to each of one or more positions; a reading unit which reads one or more head related transfer functions corresponding to the recognized position when the filter update necessity examiner determines that the recognized position is not in an optimum listening region determined according to the current head related transfer function, from the stored head related transfer functions that exist in the storage unit; a calculator which calculates a crosstalk removal function with respect to the recognized position using the read head related transfer functions; and a filter which removes the crosstalk by using the calculated crosstalk removal function, wherein if one or more head related transfer functions corresponding to the recognized position does not exist in the storage unit, the reading unit reads one or more head related transfer functions with respect to each of a plurality of positions on a straight line on which the recognized position is located, and the calculator calculates the crosstalk removal function with respect to the recognized position by interpolating the read head related transfer functions.