SOUND PROCESSING DEVICE, METHOD, AND PROGRAM

To enable more stable localization of a sound image.SOLUTION: A virtual speaker is assumed to exist on a lower side among sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect...

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Main Authors CHINEN TORU, SHI RUNYU, YAMAMOTO YUKI, HATANAKA MITSUYUKI
Format Patent
LanguageEnglish
Japanese
Published 04.06.2024
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Abstract To enable more stable localization of a sound image.SOLUTION: A virtual speaker is assumed to exist on a lower side among sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at an upper right and an upper left, to calculate respectively gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker. Values obtained by multiplying these gains by the gain of the virtual speaker are set as the gains of the lower right and lower left speakers for fixing a sound image at the target sound image position. The present technology can be applied to sound processing apparatuses.SELECTED DRAWING: Figure 7 【課題】音像の定位をより安定させることができるようにする。【解決手段】目標音像位置を囲む4つのスピーカを頂点とする球面上の四角形の辺のうち、下側に位置する辺上に仮想スピーカがあるものとされる。そして、仮想スピーカと、右上および左上の2つのスピーカとから3次元VBAPにより、目標音像位置に音像を定位させるための右上および左上の2つのスピーカと仮想スピーカの各ゲインが算出される。さらに、右下および左下のスピーカについて2次元VBAPが行なわれ、仮想スピーカに音像を定位させるための、右下および左下のスピーカのゲインが算出され、それらのゲインに仮想スピーカのゲインが乗算されたものが、目標音像位置に音像を定位させるための右下および左下のスピーカのゲインとされる。本技術は、音声処理装置に適用することができる。【選択図】図7
AbstractList To enable more stable localization of a sound image.SOLUTION: A virtual speaker is assumed to exist on a lower side among sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at an upper right and an upper left, to calculate respectively gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker. Values obtained by multiplying these gains by the gain of the virtual speaker are set as the gains of the lower right and lower left speakers for fixing a sound image at the target sound image position. The present technology can be applied to sound processing apparatuses.SELECTED DRAWING: Figure 7 【課題】音像の定位をより安定させることができるようにする。【解決手段】目標音像位置を囲む4つのスピーカを頂点とする球面上の四角形の辺のうち、下側に位置する辺上に仮想スピーカがあるものとされる。そして、仮想スピーカと、右上および左上の2つのスピーカとから3次元VBAPにより、目標音像位置に音像を定位させるための右上および左上の2つのスピーカと仮想スピーカの各ゲインが算出される。さらに、右下および左下のスピーカについて2次元VBAPが行なわれ、仮想スピーカに音像を定位させるための、右下および左下のスピーカのゲインが算出され、それらのゲインに仮想スピーカのゲインが乗算されたものが、目標音像位置に音像を定位させるための右下および左下のスピーカのゲインとされる。本技術は、音声処理装置に適用することができる。【選択図】図7
Author YAMAMOTO YUKI
SHI RUNYU
HATANAKA MITSUYUKI
CHINEN TORU
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Snippet To enable more stable localization of a sound image.SOLUTION: A virtual speaker is assumed to exist on a lower side among sides of a tetragon having its...
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SubjectTerms ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
STEREOPHONIC SYSTEMS
Title SOUND PROCESSING DEVICE, METHOD, AND PROGRAM
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