PROBLEM TO BE SOLVED: To improve sound image localization accuracy, while keeping energy ratio between a position where a sound image is given and a quiet area, in the cabin of a car.SOLUTION: A sound field controller 100 for controlling the sound field in a car includes a relative position calculation unit 108 for calculating the relative position of an object approaching the car and the car, based on the information acquired from a sensor 220 and/or an antenna 230, a setting unit 110 for determining the direction of a sound image based on the relative position, and setting filter coefficients based on the direction of a sound image and a quiet area, and an acoustic signal generation unit 103 generating acoustic information, by passing sound information, for urging an operator to warn, to a filter having filter coefficients. The filter coefficients are calculated by weighting a transfer function, and the value of weighting is larger at the position of the operator than in the quiet area.SELECTED DRAWING: Figure 1
【課題】自動車の車室内において、音像を与える位置と静寂性を保つ領域との間でエネルギー比を保ちつつ、音像定位精度を向上させる。【解決手段】本発明に係る自動車内の音場を制御する音場制御装置100は、センサ220及び/又はアンテナ230から取得した情報に基づいて、自動車に接近する対象物と自動車との相対位置を算出する相対位置算出部108と、相対位置に基づいて音像の方向を決定し、音像の方向及び静寂領域に基づいてフィルタ係数を設定する設定部110と、運転者に警告を促すための音情報をフィルタ係数を有するフィルタに通して、音響情報を生成する音響信号生成部103とを備え、フィルタ係数は、伝達関数に重みを加味して算出した値であり、重みの値は、静寂領域よりも運転者の位置において大きい。【選択図】図1
SOUND FIELD CONTROLLER, SOUND FIELD CONTROL SYSTEM, AND SOUND FIELD CONTROL METHOD
音場制御装置、音場制御システム及び音場制御方法
2017-08-24
Patent
Electronic Resource
Japanese
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