<研究論文>ファジィ学習同定法の構築法

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A new algorithm for achieving fast adaptation of echo-canceler to be used in a teleconference system and a hand-free telephone system to a sudden change in an impulse response from a loudspeaker to a microphone was proposed in this paper. In this algorithm, a step-size for gain is sequentially controlled based on the fuzzy logic where the square error and its changing rate are used for estimating the amount of alteration of the step-size. In addition, a method for automatically designing a fuzzy set appropriate for fast adaptation of the system was also proposed. The results of computer simulation show that the proposed methods can provide faster convergence of the system against a sudden change in an impulse response from a loudspeaker to a microphone than the existing methods.
東京都立航空工業高等専門学校の論文