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

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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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 the blind source separation algorithm, so as to solve the problem that the existing recording method requires high microphone position and layout, robustness poor problem

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