Multi-microphone noise reduction method, apparatus and terminal device

A multi-microphone and main microphone technology, applied in the field of communication, can solve the problem of poor applicability in application scenarios such as the robustness of noise reduction algorithms

Active Publication Date: 2020-07-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Therefore, the embodiment of the present application provides a multi-microphone noise reduction method, device, and terminal equipment to solve the pr

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  • Multi-microphone noise reduction method, apparatus and terminal device
  • Multi-microphone noise reduction method, apparatus and terminal device
  • Multi-microphone noise reduction method, apparatus and terminal device

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Embodiment Construction

[0078] Hereinafter, embodiments of the present application provide a multi-microphone noise reduction method, device, and terminal equipment.

[0079] In order to make those skilled in the art better understand the technical solutions of the present application, and make the above-mentioned purpose, features and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0080] figure 1 It is a schematic diagram of a voice communication system to which the multi-microphone noise reduction method provided in the embodiment of the present application is applied. Such as figure 1 As shown, the voice communication system may include a first terminal device and a second terminal device, which respectively have at least one primary microphone and one secondary microphone. The terminal equipment of the present application can be any...

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Abstract

Disclosed are a multi-microphone noise reduction method, an apparatus and a terminal device. The method includes: performing harmonic detection on a primary microphone signal to obtain frequency bin VAD flag information; controlling, according to the frequency bin VAD flag information, a Kalman filter to filter out a target speech signal from a secondary microphone signal, to obtain a secondary microphone noise signal; mapping the secondary microphone noise signal to the primary microphone signal through dynamic noise spectrum mapping, to obtain a primary microphone noise spectrum of the primary microphone signal; and calculating a noise reduction gain for the primary microphone signal according to at least the primary microphone noise spectrum of the primary microphone signal, and outputting a noise-reduced primary speech signal. The method has good robustness to location changes, various noises and application scenarios, and can be applied to both the handheld and hands-free modes.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a multi-microphone noise reduction method, device and terminal equipment. Background technique [0002] When the mobile phone is in hand-held or hands-free mode, the uplink voice will inevitably be interfered by various noises due to the complex environment. Common noise can be divided into scattering noise and coherent noise from the perspective of sound field distribution, and can be divided into steady-state noise, non-stationary noise and transient noise from the perspective of noise stationarity. These noises and interferences can easily affect the target signal, seriously reducing the listening comfort and speech clarity of the collected speech. Therefore, it is necessary to perform noise suppression processing on the uplink speech. [0003] Traditional noise suppression algorithms are generally divided into single-microphone noise reduction algorithm...

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Application Information

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IPC IPC(8): G10L21/0208G10L21/0232G10L21/0216
CPCG10L2021/02161G10L21/0208G10L21/0232
Inventor 范泛德米特里·弗拉基米罗维奇·萨拉纳弗拉迪斯拉夫·伊戈列维奇·瓦西里耶夫
Owner HUAWEI TECH CO LTD
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