Stereo surround sound reconstruction method and device

A surround sound and stereo technology, applied in the audio field, can solve the problems that the ordinary two-channel stereo sound effect cannot be improved, and the price is expensive.

Active Publication Date: 2015-08-12
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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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

Method used

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  • Stereo surround sound reconstruction method and device
  • Stereo surround sound reconstruction method and device
  • Stereo surround sound reconstruction method and device

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Embodiment Construction

[0103] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0104] figure 1 The flow chart of the stereo surround sound reconstruction method provided by the embodiment of the present invention, such as figure 1 As shown, the specific steps are as follows:

[0105]Step 100: Assume that there are N / 2 players in total, N is an even number, and each player has two speakers, the players are numbered 1-N / 2, the corresponding speakers are numbered 1-N, and the nth (1<=n<=N) loudspeakers form a loudspeaker pair with the N-n+1th loudspeaker, and a total of N / 2 pairs of loudspeakers are formed.

[0106] Step 101: For any player, the player selects the same audio source as other N / 2-1 players.

[0107] The "audio source" here is not only for audio streams containing only audio data, but also for media streams containing both audio and video data.

[0108] Step 102: According to the calculated virtua...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S5/00
Inventor 张志飞刘洋朱春波
Owner SAMSUNG ELECTRONICS CHINA R&D CENT
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