Method and device for improving recording quality based on blind source separation algorithm

A blind source separation and algorithmic technology, applied in the audio field, can solve the problems of poor robustness and high requirements for microphone position layout, and achieve the effects of good robustness, improved recording quality, low performance and structural design

Inactive Publication Date: 2017-10-24
HUIZHOU TCL MOBILE COMM CO LTD
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Problems solved by technology

[0006] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a method and device for improving recording quality based on

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  • Method and device for improving recording quality based on blind source separation algorithm
  • Method and device for improving recording quality based on blind source separation algorithm
  • Method and device for improving recording quality based on blind source separation algorithm

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Embodiment Construction

[0040] The invention provides a method and a device for improving recording quality based on a blind source separation algorithm, which are applicable to all terminal devices with recording functions. In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Based on the current speech recognition and noise reduction enhancement algorithm, only the speech signal mixed with environmental noise can be recognized and processed, but the aliased speech signal with human voice as background noise cannot be processed. The blind source separation algorithm adopted in this embodiment (referred to here as the blind source separation algorithm of the multi-mi...

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Abstract

The invention discloses a method and a device for improving recording quality based on blind source separation algorithm. The method includes: performing analog-to-digital conversion on the external voice signals collected by a plurality of microphones to obtain several channels of digital voice signals; according to the blind source separation algorithm, separating the background noise and the reference audio signal for each channel of digital voice signals and filtering the background noise; and packaging and saving each channel of reference audio signal after the each channel of reference audio signal is mixed. According to the invention, as the blind source separation algorithm requires very little on the performance and structural design of the microphones and does not require multiple auxiliary microphones to collect multiple ambient sound signals to meet the analytical requirements of the algorithm, the robustness is very good, thus solving the problem that the existing recording modes have higher requirements on the position and layout of the microphones but the robustness is poor.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a method and a device for improving recording quality based on a blind source separation algorithm. Background technique [0002] With the rapid popularization of handheld devices, users have higher and higher requirements for the functions and intelligence of the handheld devices. How to make handheld devices more intelligent, with more specialized and diversified functions, and more efficient use in daily life has become an urgent problem to be solved. Basically all handheld devices are equipped with a recording function as standard, but the quality of the recording and the recording method are similar, the quality cannot be guaranteed, and the monotony of the function makes this function completely useless compared to other dedicated recording devices. [0003] At present, MEMS (micro-electromechanical system) microphones are increasingly used in handheld devices, due to their...

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Application Information

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IPC IPC(8): G10L19/26G10L21/003G10L21/0216G10L21/0272
CPCG10L19/26G10L21/003G10L21/0216G10L21/0272
Inventor 陈琼
Owner HUIZHOU TCL MOBILE COMM CO LTD
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