PROBLEM TO BE SOLVED: To control a sound field so that important sound information is audible independently in each region in a closed space.SOLUTION: A sound field controller 100 for controlling, in a closed space including a plurality of speakers 300, a sound field in the closed space formed by a plurality of pieces of input sound information comprises: an acoustic signal generation unit 103 for generating, for each of the plurality of pieces of sound information, a plurality of acoustic signals through a filter having a filter factor according to a transmission target region for each sound information; a signal summation unit 104 for summing up the plurality of acoustic signals; and a sound output unit 105 for supplying the summed acoustic signal to the plurality of speakers 300. The filter factor is calculated on the basis of a transfer matrix from the plurality of speakers 300 to a plurality of regions in the closed space and target sound fields in the plurality of regions.
【課題】閉空間において、領域ごとに独立して重要な音情報を聞き取ることができるように音場を制御する。【解決手段】本発明に係る音場制御装置100は、複数のスピーカ300を有する閉空間において、入力される複数の音情報による該閉空間における音場を制御する音場制御装置100であって、複数の音情報の各々に対し、各音情報の伝達対象の領域に応じたフィルタ係数を有するフィルタを通して複数の音響信号を生成する音響信号生成部103と、複数の音響信号を加算する信号加算部104と、加算された音響信号を複数のスピーカ300に供給する音響出力部105とを備え、フィルタ係数は、複数のスピーカ300から閉空間内の複数の領域への伝達行列と、複数の領域における目標音場に基づいて算出される。【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
2015-11-26
Patent
Electronic Resource
Japanese
IPC: | H04S Stereophone Systeme , STEREOPHONIC SYSTEMS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
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