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Three-dimensional translation method for five loudspeakers

A loudspeaker and loudspeaker group technology, applied in the field of acoustics, can solve problems such as inconvenient methods and complex application scenarios

Inactive Publication Date: 2013-03-20
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the actual application scenario is extremely complex. When the number of replacement speakers is five or more, the method of replacing a virtual sound source (single speaker) with four speakers is not simple enough, so we need to find more speakers to replace a virtual sound source (single speaker) signal distribution method

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Embodiment Construction

[0038] The present invention proposes a three-dimensional translation method for five loudspeakers for five loudspeaker groups placed on the same spherical surface. The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Such as figure 1 As shown, the embodiment adopts the above-mentioned three-dimensional translation method of five speakers to realize five speakers replacing one virtual sound source (replacing a single speaker), including the following steps:

[0040] Step 1. Determine the positional relationship between the virtual sound source (the replaced single speaker) and the replaced speaker group. The number of replacement speakers is five, and the virtual sound source (the replaced single speaker) needs to be located inside the spherical polygonal area formed by the five replacement speakers, otherwise it cannot be replaced, and the smaller the area of ​​the sp...

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Abstract

The invention provides a three-dimensional translation method for five loudspeakers. The method comprises the steps of judging a position relation among a virtual sound source (substituted single loudspeaker) and five substituting loudspeakers, measuring and recording positions of all the loudspeakers, calculating a distribution coefficient of a signal of the substituted single loudspeaker being distributed to signals of the five substituting loudspeakers according to a principle that time average sound intensity and sound pressure generated by the virtual sound source (the substituted single loudspeaker) at a receiving point are equal to average sound intensity and sound pressure generated by the five substituting loudspeakers at the receiving point, deleting the virtual sound source, and distributing the signals. According to the three-dimensional translation method for the five loudspeakers, the five substituting loudspeakers can substitute one virtual sound source (the substituted loudspeaker), and compared with the translation method for fewer loudspeakers, repeated adjustments of grouping and signal distribution under the condition of the five loudspeakers are avoided, and the signal distribution can be conducted rapidly under the condition of the five loudspeakers.

Description

technical field [0001] The invention belongs to the field of acoustics, in particular to a three-dimensional translation method for five loudspeakers. Background technique [0002] Some multi-channel sound systems enhance spatial imaging relative to 5.1 sound systems, and some of these systems can provide three-dimensional sound. However, only a few of these systems have attempted to be developed for 3D audio content. One difficulty in producing 3D audio is that 3D panning takes a significant amount of time when using conventional sound reconstruction systems. Three-dimensional panning is a technique that uses several speakers in a three-dimensional sound field to create a virtual sound source. Among the three-dimensional translation methods, vector based amplitude panning technology (vector based amplitude panning abbreviated as VBAP) is widely recognized. In 3D VBAP, the virtual sound source is synthesized by three speakers, the starting point is at the receiving point,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S3/00
Inventor 胡瑞敏王松李诗晴李登实杨玉红涂卫平王晓晨张茂胜高丽
Owner WUHAN UNIV
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