Patent ID: 8050433
Filing Date: 2011-11-01
Classification: H04R,H04S

Abstract:
1. An apparatus to cancel asymmetrical crosstalk between two speakers and two ears of a listener, the apparatus comprising: a first signal processing unit to input left and right channel signals binaural synthesized by a head related transfer function (HRTF), adjust a gain and a delay of the left channel input signal, adjust a gain and a delay of the right channel input signal, add the left channel input signal to the gain and delay adjusted right channel input signal to obtain a first mixed signal, and add the right channel input signal to the gain and delay adjusted left channel signal to obtain a second mixed signal; and a second signal processing unit to adjust a frequency characteristic of the first mixed signal in an inverse HRTF form and output a result to a left speaker, and adjust a frequency characteristic of the second mixed signal in the inverse HRTF form and output a result to the right speaker, wherein the gain values are determined by a difference between maximum values of impulse responses of a first HRTF and a second HRTF between the speakers and the ears, wherein the delay values are determined by a time when a cross-correlation function of impulse responses of the first HRTF and the second HRTF between the speakers and the two ears becomes a maximum.