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Three-dimensional audio downsizing method and system

A three-dimensional audio and audio system technology, applied in the direction of stereo circuit arrangement, etc., can solve problems such as difficult to apply to home environment

Active Publication Date: 2015-12-02
WUHAN UNIV
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Problems solved by technology

[0004] However, the existing three-dimensional multi-channel audio system requires a large number of speakers, often reaching dozens or even thousands, which is difficult to apply in the home environment

Method used

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  • Three-dimensional audio downsizing method and system

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Embodiment Construction

[0104] The technical solution of the present invention is a binaural low-distortion three-dimensional multi-channel audio system speaker streamlining method, which is used to simplify the L speakers in the original three-dimensional multi-channel audio system into M speakers to form three-dimensional M-channel audio system, where M<L. During specific implementation, those skilled in the art can set the value of M by themselves.

[0105] During specific implementation, the technical scheme of the present invention can be realized by those skilled in the art using computer software technology to automatically run the process. see figure 1 , the process of the embodiment includes the following steps:

[0106] Step 1. Assuming that the original 3D multi-channel audio system has L speakers, respectively collect the spatial position information of the L speakers in the original 3D multi-channel audio system, and initialize the set of speakers to be reduced to include L speakers in...

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Abstract

A three-dimensional audio downsizing method and system are disclosed. The method includes acquiring the spatial and positional information of L loudspeakers and the spatial and positional information of human head characteristics in an original three-dimensional multitrack audio system, converting the input time-domain signals of the L loudspeakers to obtain corresponding frequency domain signals, calculating the total sound pressure of the sound signals played by the L loudspeakers at left ear, the right ear and the head center, fining and removing one loudspeaker with minimal distortion of an original sound field from the current loudspeaker set to be downsized, continuously downsizing the current new loudspeaker set to be downsized until the optimal spatial and positional assignment of loudspeakers of an M channel system is obtained, and converting the frequency-domain signals on corresponding loudspeaker of the M channel system into time-domain signals through inverse Fourier transform. A 3D spatial sound field of a head area can be reconstructed with fewer loudspeakers, and the method and system are applicable to household environment.

Description

technical field [0001] The invention belongs to the field of acoustic equipment, and in particular relates to a three-dimensional multi-channel audio system loudspeaker simplification technical solution based on binaural sound pressure and low distortion. Background technique [0002] With the steady development of 3D movies, the development of 3D TV is relatively rapid. According to the research report of the British Future Consulting Company, the sales of 3D TVs suitable for households are expected to increase to 157.7 million units in 2017, accounting for about 58% of the total TV sales worldwide. It can be seen that the 3D film and television audio-visual experience has not only entered the theater, but also gradually entered thousands of households. For the current multimedia industry, "3D" has become a new symbol. 3D audio and video technology can bring better immersive audio-visual enjoyment, and has become a research hotspot in the multimedia field. However, the cu...

Claims

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Application Information

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IPC IPC(8): H04R5/04
Inventor 胡瑞敏李登实吴果张灵鲲王松王晓晨涂卫平杨玉红
Owner WUHAN UNIV
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