| 摘要 |
#CMT# #/CMT# The output timings and output levels of left, right, center, left and right surround and low-frequency effect channel of audio signals (L,R,C,Ls,Rs,LFE), are corrected. Virtual speakers are formed for another set of channel audio signals using head-related transfer functions measured at arbitrary locations around listener, to cancel crosstalk between virtual speakers. Corrected and crosstalk-canceled channel audio signals are mixed. #CMT# : #/CMT# Independent claims are also included for the following: (1) method of reproducing surround sound; (2) audio reproducing apparatus; (3) audio reproducing system; and (4) apparatus to reproduce surround sound. #CMT#USE : #/CMT# For reproducing 7.1 channel audio in home theater system. #CMT#ADVANTAGE : #/CMT# The DVDs encoded using 5.1 channels and 7.1 channels can be played using 5.1 channel home theater system, without the need to purchase extra speakers. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows the block diagram illustrating 7.1 channel audio reproducing apparatus. 230 : back surround filter(240,250) adders. |
