SOUND SIGNAL PROCESSING DEVICE, SOUND REPRODUCTION APPARATUS AND SOUND SIGNAL PROCESSING PROGRAM

• Main Authors: OISHI SATOSHI, MATSUI KENTARO
• Format: Patent
• Language: English; Japanese
• Published: 20.11.2014
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS; STEREOPHONIC SYSTEMS

PROBLEM TO BE SOLVED: To provide a sound signal processing device which calculates a driving signal in accordance with a position of a listener so as to generate a sound image at a predetermined depth position.SOLUTION: A sound signal processing device 2 comprises: virtual sound image position setting means 21 for setting a virtual sound image position; listening position obtaining means 22 for obtaining information on a listening position; virtual sound source position calculating means 24 for calculating, with the use of the virtual sound image position, an arrangement position of linear speaker arrays SPAand SPAand the listening position, a virtual sound source position of each of the linear speaker arrays; and driving signal calculating means 25 for calculating, based on the wavefield synthesis (WFS) theory, a driving signal for each of the linear speaker arrays, with the use of the virtual sound source position, the speaker unit arrangement position and the listening position. 【課題】所定の奥行位置に音像を生成するように、聴取者の位置に応じた駆動信号を算出する音響信号処理装置を提供する。【解決手段】音響信号処理装置２は、虚音像位置を設定する虚音像位置設定手段２１と、聴取位置の情報を取得する聴取位置取得手段２２と、虚音像位置と直線スピーカアレイＳＰＡ１、ＳＰＡ２の配置位置と聴取位置とを用いて、直線スピーカアレイ毎の仮想音源位置を算出する仮想音源位置算出手段２４と、直線スピーカアレイ毎に、仮想音源位置とスピーカユニット配置位置と聴取位置とを用いて、ＷＦＳ理論に基づいて駆動信号を算出する駆動信号算出手段２５とを備える。【選択図】図７