Voice recording method and system based on annular microphone array

A microphone array and voice recording technology, which is applied to the spatial/structural arrangement of microphones, signal processing, electrical components, etc., can solve the problems of poor beam directivity, limited interference suppression ability, and excessive signal leakage, etc., to reduce excessive leakage More, improve the effect of voice recording, improve the effect of suppression ability

Active Publication Date: 2017-08-04
ANHUI IFLYTEK INTELLIGENT SYST
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Problems solved by technology

[0005] Embodiments of the present invention provide a voice recording method and system based on a circular microphone array to solve the problem that the signal obtained by the existing circular microphone array has limited ability to suppress interference in undesired directions, resulting in excessive leakage of signals in other directions, and poor beam directivity. bad question

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  • Voice recording method and system based on annular microphone array
  • Voice recording method and system based on annular microphone array
  • Voice recording method and system based on annular microphone array

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Embodiment Construction

[0062] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0063] It should be emphasized that the recording method provided by the present invention is not only applicable to conference recording, but also applicable to any scene where voice needs to be recorded. The recording method provided by the present invention can solve the problem of excessive signal leakage in other directions, so as to improve the accuracy of voice recording. Effect. In addition, it can also be applied to other scenarios where ring microphone arrays are used to collect voice signals, for example, speaker recognition scenarios using ring microphone arrays, intelligent interaction scenarios, etc., to improve the quality of voice signals output by ring microphone arrays, thereby improving voice ...

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Abstract

The invention provides a voice recording method and system based on an annular microphone array. The method comprises the following steps: acquiring a voice signal in real time through the annular microphone array, wherein the annular microphone array comprises multiple microphones; converting the voice signal into a frequency domain signal; performing sector division on a space corresponding to the annular microphone array to form multiple sector regions containing at least one microphone; generating a fixed beam of each sector region; and self-adaptively adjusting each fixed beam frame by frame so that the influence on the current fixed beam by other fixed beam is minimum, and the voice signal at each fixed beam direction is obtained; and recording the voice signal at each fixed beam signal. By use of the voice recording method and system provided by the invention, a problem that the signal leakage is excessive in other direction is reduced, and the use experience effect is improved.

Description

technical field [0001] The invention relates to the field of voice signal processing, in particular to a voice recording method and system based on a ring microphone array. Background technique [0002] With the continuous development of voice processing technology, the conference recording work has gradually changed from traditional purely manual recording to intelligent conference recording equipment, which greatly reduces the workload and manpower input. However, the acoustic phenomenon in the real conference environment is more complicated, and the quality of conference recording is affected by many factors, such as external noise, far-field recording, and mutual interference between speakers, etc., making it difficult for the entire recording system to accurately obtain the data of each speaker , and then realize the follow-up data analysis work, such as listening back, transcribing, etc. [0003] Traditional voice noise reduction systems are mostly based on multiple m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R5/027
CPCH04R5/027H04R2430/23
Inventor 王海坤徐东阳马峰王智国胡郁刘庆峰
Owner ANHUI IFLYTEK INTELLIGENT SYST
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