STEREO ACOUSTIC COUPLING AMOUNT ESTIMATING DEVICE, STEREO ACOUSTIC COUPLING AMOUNT ESTIMATING METHOD, AND STEREO ACOUSTIC COUPLING AMOUNT ESTIMATING PROGRAM
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机译：立体声声耦合量估计装置，立体声声耦合量估计方法和立体声声耦合量估计程序
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摘要
PROBLEM TO BE SOLVED: To solve the problem that a stereo acoustic coupling amount is obtained without obtaining a local solution even when there is no symmetry between a microphone and a speaker.;SOLUTION: Stereo acoustic coupling estimating technique includes a means for converting a stereo reception signal and a transmission signal into the signals of a frequency area from a temporal area, a means for holding the stereo reception signal and transmission signal of the frequency area, a means for obtaining a signal ratio of the stereo reception signal of the frequency area; a means for determining whether the signal ratio is changed or not, and a coupling amount calculating means for obtaining a transmission function through the use of the present reception signal and transmission signal and the past reception signal and transmission signal held in a holding means when the signal ratio is changed. The signal ratio change determining means holds the signal ratio and compares the present signal ratio with the past signal ratio held in the signal radio holding means.;COPYRIGHT: (C)2011,JPO&INPIT
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