DISPLAY PROCESSING DEVICE AND DISPLAY PROCESSING METHOD

To display an acoustic state within a sound field space in an appropriate manner.SOLUTION: An instantaneous particle speed calculation unit 730 calculates an instantaneous particle speed u(t) and an instantaneous sound pressure calculation unit 740 calculates instantaneous sound pressure p(t) on the...

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Bibliographic Details
Main Authors HASEGAWA TOMOKI, NOHARA MANABU
Format Patent
LanguageEnglish
Japanese
Published 30.05.2019
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Summary:To display an acoustic state within a sound field space in an appropriate manner.SOLUTION: An instantaneous particle speed calculation unit 730 calculates an instantaneous particle speed u(t) and an instantaneous sound pressure calculation unit 740 calculates instantaneous sound pressure p(t) on the basis of a speed potential φ(ω) calculated on the basis of sound field identifying data by a speed potential calculation unit 720. Next, an instantaneous acoustic intensity calculation unit 750 calculates instantaneous acoustic intensity TIN(t) at each position on an analysis surface (P) on the basis of the instantaneous particle speed u(t) and the instantaneous sound pressure p(t). Then, a display control unit 760 generates display data relating to information SIN(t) on acoustic intensity at each position on the analysis surface obtained by adding color information corresponding to a value of instantaneous sound pressure p(t) at that position on the analysis surface to the instantaneous acoustic intensity TIN(t), and sends the generated display data to a display unit 770.SELECTED DRAWING: Figure 1 【課題】音場空間内の音響状態を適切な態様で表示する。【解決手段】速度ポテンシャル算出部720が音場特定データに基づき算出した速度ポテンシャルφ(ω)に基づいて、瞬時粒子速度算出部730が、瞬時粒子速度u(t)を算出するとともに、瞬時音圧算出部740が、瞬時音圧p(t)を算出する。次に、瞬時音響インテンシティ算出部750が、瞬時粒子速度u(t)及び瞬時音圧p(t)に基づいて、解析面(P)上の各位置における瞬時音響インテンシティTINP(t)を算出する。引き続き、表示制御部760が、解析面上の各位置における瞬時音圧pP(t)の値に応じた色情報を、瞬時音響インテンシティTINP(t)に付加した解析面上の各位置における音響インテンシティの情報SINP(t)に関する表示データを生成し、生成された表示データを表示部770に送る。【選択図】 図1
Bibliography:Application Number: JP20170208824