Method and system for enhancing effect of multichannel system

Abstract

The invention discloses a method and a system for enhancing an effect of a multichannel system. The method comprises the following steps of obtaining coordinates of speakers at vertexes of a regular polyhedron when a speaker array is put in a regular polyhedron structure manner, constructing new speaker putting points, obtaining position information of the new speaker putting points and computing initial allocation signals of all speakers; allocating speaker signals at the new speaker putting points to the speakers at the vertexes of the regular polyhedron; and obtaining a final allocation signal of each speaker at the vertex of the regular polyhedron through a summation method and deleting the speakers at the new speaker putting points. According to the technical scheme of the invention, the decomposition components of spatial information can be increased, the physical properties of the sound at the original point, the left ear and the right ear are more fully kept, and the method and the system are beneficial to enhancement of a reconstruction effect of the multichannel system.

Description

technical field [0001] The invention belongs to the field of acoustics, in particular to a multi-channel system effect enhancement method and system. Background technique [0002] With the development of 3D TV and 3D movie technology, 3D audio technology has become a research hotspot in the field of multimedia. In three-dimensional audio technology, Ambisonics (high-fidelity stereophonic reproduction) is an important physical sound field reconstruction technology. In the 1870s, Michael Gerzon of Oxford University first proposed the Ambisonics technology, which uses spherical harmonics to represent and reconstruct the sound field. Compared with other 3D sound field reconstruction methods such as Wave Field Synthesis (WFS), Vector Based Amplitude Panning (VBAP), and Head-Related Transfer Function (HRTF), Ambisonics technology is a more practical And gradually approaching the method of acoustic holography. [0003] In the ambisonics system, the sound field reconstruction eff...

AI Technical Summary

Problems solved by technology

The higher the order, the better the effect of reconstructing the sound field, but more speakers are needed, which will make speaker placement more troublesome, which is not conducive to practical use

For example, when 8 speakers are arranged in a regular hexahedron structure, they can be used to reconstruct the sound field of the Ambisonics system, but due to the small number of speakers, the error of sound field reconstruction using the traditional Ambisonics encoding method is relatively large in this arrangement

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