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Stereo playback method of a loudspeaker array

A loudspeaker array and loudspeaker technology, applied in the spatial/structural arrangement of the loudspeaker, can solve the problems of not considering the inconsistency of the array unit, the unreasonable setting of the included angle of the loudspeaker unit, etc., and achieve good crosstalk elimination effect and enhanced surround effect Effect

Active Publication Date: 2017-02-15
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is based on a circular speaker array, which is not applied to a linear array, is not suitable for a flat TV wall, and does not consider the inconsistency of the array units. At the same time, the frequency band division method and the angle between the speaker units are not reasonable.

Method used

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  • Stereo playback method of a loudspeaker array
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  • Stereo playback method of a loudspeaker array

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Embodiment Construction

[0039] In order to make the purpose, technical means, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings.

[0040] The stereo playback method in this application is improved based on the optimal sound source distribution technology. In the optimal sound source distribution technology, it is required that the speaker should be a continuous ring-shaped line sound source (such as figure 1 As shown), therefore, it is difficult to apply to discrete speaker arrays composed of multiple speakers, especially linear speaker arrays, such as flat-screen TV walls.

[0041] In this application, the ideal ring-shaped loudspeaker is discretized into a loudspeaker array, where a plurality of loudspeaker pairs included in the loudspeaker array are arranged symmetrically in pairs, which can be a linear arrangement or an arc arrangement (such as figure 2 Shown).

[0042] Among them, in the arc arrangement, t...

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Abstract

The invention discloses a stereo playback method of a loudspeaker array. The stereo playback method of the loudspeaker array includes that positions and frequency ranges of loudspeaker pairs are determined in advance, sound signals are subjected to frequency division processing according to the frequency ranges, frequency division signals within corresponding frequency range of each loudspeaker are subjected to filtration through a crosstalk cancellation filter which corresponds to each loudspeaker, and result signals after filtration are played through the loudspeakers. The crosstalk cancellation filters are determined according to an optimum sound source distribution mode. By means of the stereo playback method of the loudspeaker array, good stereo surrounding effects can be achieved.

Description

Technical field [0001] This application relates to audio processing technology, and in particular to a stereo playback method of a speaker array. Background technique [0002] The existing surround sound playback array technologies include the following three types: (1) Wave Field Synthesis, referred to as WFS; (2) High Order Ambisonics, referred to as HOA; (3) surround sound. [0003] Among them, WFS is a spatial sound field reproduction technology that uses a large number of speakers to generate a virtual auditory scene in a wide range. In theory, using WFS technology, the speaker array can generate almost all virtual sound fields that conform to the laws of physics, and the generated virtual sound source can be behind the array or in front of the array. [0004] HOA is a kind of sound spatialization technology. The whole system is divided into two parts: encoder and decoder. It encodes the original sound into multiple sound signals for storage and transmission, and finally decod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R5/02
Inventor 郑剑文卢晶张志飞刘洋朱春波
Owner SAMSUNG ELECTRONICS CHINA R&D CENT
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