Stereo surround sound reconstruction method and device

Abstract

The invention provides a method and device for reconstructing stereo surround sound. The method comprises the steps: arranging N loudspeakers in all, and forming a loudspeaker pair by an n-th loudspeaker and an (N-(n+1))-th loudspeaker, wherein n is not smaller than 1 and not greater than N; selecting an audio source, which is the same as that of the other N-1 loudspeakers, for any loudspeaker n; converting audio source signals into stereo surround sound excitation signals according to a virtual front loudspeaker conversion factor and a virtual surround sound conversion factor, and outputting the excitation signals to the loudspeaker n, wherein the virtual front loudspeaker conversion factor is obtained through converting superimposed sound pressure of the loudspeaker n and the loudspeaker N-(n+1) at left and right ears into superimposed sound pressure of a virtual front loudspeaker at the left and right ears, and the virtual surround loudspeaker conversion factor is obtained through converting the superimposed sound pressure of the loudspeaker n and the loudspeaker N-(n+1) at the left and right ears into superimposed sound pressure of a virtual surround loudspeaker at the left and right ears. The method and the device have the advantages that the sound effect of ordinary stereo sources and ordinary stereo playing devices is improved.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a stereo surround sound reconstruction method and device. Background technique [0002] Most of the existing audio is ordinary two-channel stereo, and the effect lacks a sense of presence when played through a player device. At the same time, for audio in multi-channel stereo surround sound format such as 5.1 channels, most TVs and computers can only play ordinary two-channel stereo sound effects, and the presence of stereo surround sound can only be experienced through expensive home theaters. [0003] Most current virtual surround sound reconstruction methods mainly include two steps: [0004] 1) According to the head correlation function, the surround sound of multi-channel formats such as 5.1 channels is reconstructed through the speakers in front of the person. Since people are not sensitive to the sound sources at the front and rear mirror positions, in order to expand the...

AI Technical Summary

Problems solved by technology

[0007] 1) Surround sound reconstruction is only performed for multi-channel formats that themselves contain surround sound channels, and the sound effect of ordinary two-channel stereo cannot be improved

[0008] 2) The playback system with more than two speakers needs to use additional hardware devices to ensure the synchronization of each channel, which is relatively expensive

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