APPARATUS FOR REPRODUCING ACOUSTIC SIGNALS.

摘要

An apparatus for binaurally reproducing acoustic signals. In the acoustic signal apparatus, a reference signal sent from a reference source is sensed by a pair of signal detecting means placed on the head of a listener. In response to detected signal, a calculation means calculates the distance and angle of the head relative to the reference source. The information thus obtained gives the transfer characteristics for the imaginary source of sound that is located at a given position with respect to the reference source. An acoustic signal processing means processes the acoustic signals based on the transfer characteristics. In the acoustic signal apparatus, furthermore, a level detecting means detects either one of the pair of signal detecting means whose detecting level becomes lower than a reference level, and a control means controls the acoustic signals supplied to the headphone device based on the detected output. Even when the listener moves, the acoustic signal apparatus maintains proper binaural reproduction without causing the imaginary source of sound to move owing to the use of the headphone device.