Sound separation method and device, electronic equipment and storage medium

By obtaining the sound signals of different channels, determining the characteristics of ambient sound and coherent sound based on the short-term energy value and linear combination relationship, establishing a weight mapping relationship, realizing the effective separation of coherent sound and ambient sound, solving the problem that is difficult to completely distinguish in the existing technology, and improving the effect of spatial sound playback technology.

CN119741935AActive Publication Date: 2025-04-01IFLYTEK (SUZHOU) TECH CO LTD
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Patent Information

Application Number
CN202411779092.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-04-01
Estimated Expiration
2044-12-05

AI Technical Summary

Technical Problem

In the prior art, coherent sound and ambient sound are difficult to completely distinguish under the limitation of stereo audio format, which limits the implementation effect of spatial sound playback technology.

Method used

By obtaining the first sound signal and the second sound signal collected by different channels, based on the short-time energy value and linear combination relationship, the short-time energy value and difference factor of ambient sound and coherent sound are determined, and the weight mapping relationship is established to realize sound separation.

Benefits of technology

Effectively separate ambient sound and coherent sound, improve the implementation effect of spatial sound playback technology, ensure the effectiveness and reliability of separation, and is simple to calculate, easy to program and implement, adapting to various stereo scenes.

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Abstract

The invention relates to the technical field of sound processing, and provides a sound separation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a first sound signal and a second sound signal; based on the short-time energy values of the first sound signal and the second sound signal and the linear combination relation between the environment sound and the coherent sound contained in the first sound signal and the second sound signal, determining the short-time energy values of the environment sound and the coherent sound and difference factors of the coherent sound on different channels; based on a weight mapping relation, the short-time energy values of the environment sound and the coherent sound and the difference factors are mapped into sound separation weights, and the weight mapping relation is obtained through linear fitting based on a linear combination relation; the ambient sound and the coherent sound are separated from the first sound signal and the second sound signal based on the sound separation weight. According to the method, the device, the electronic equipment and the storage medium provided by the invention, the effectiveness and the reliability of separation of the environment sound and the coherent sound are ensured.
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