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In the present paper, we propose a method of reference signal extraction for a semi-adaptive sound reproduction system based on semi-blind source separation under a noisy environment. Since the fluctuation of room transfer functions degrades the reproduced sound, we have proposed a semi-adaptive sound reproduction system that updates the inverse filters. However, in a noisy environment, it is difficult to observe only the reference signal. Therefore, we use semi-blind source separation to obtain a clean reference signal from a noisy observed signal. The simulation results reveal that the proposed method can obtain the reference signal with high accuracy.

Reference signal extraction under a noisy environment for a semi-adaptive sound reproduction system