Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dual-microphone noise reduction method and device, and a mobile terminal

A dual microphone and microphone technology, applied in the communication field, can solve problems such as uplink voice signal distortion, achieve good voice transmission, improve performance, and improve voice recognition efficiency

Inactive Publication Date: 2017-01-04
PHICOMM (SHANGHAI) CO LTD
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a dual microphone noise reduction method and its device, and a mobile terminal, which effectively solves the problem that the uplink voice signal is easily distorted in the existing dual microphone equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dual-microphone noise reduction method and device, and a mobile terminal
  • Dual-microphone noise reduction method and device, and a mobile terminal
  • Dual-microphone noise reduction method and device, and a mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0065] Such as figure 1 Shown is a schematic flow chart of the dual-microphone noise reduction method provided by the present invention. The dual-microphone noise reduction method is applied to a dual-microphone device (including at least a main microphone and a secondary microphone). As can be seen from the figure, in the dual-microphone noise reduction method Including: S10 collects the first sound signal through the main microphone, and collects the second sound signal through ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a dual-microphone noise reduction method and device, and a mobile terminal wherein the method comprises the following steps: S10) acquiring a first sound signal by the main microphone; acquiring a second sound signal by the sub-microphone; S20) comparing the amplitude difference value between the first sound signal and the second sound signal with a preset amplitude difference value; S30) based on the comparison result of S20, comparing the signal-to-noise ratio of the first sound signal with a preset signal-to-noise ratio; and S40) according to the comparison result of S30, adjusting the preset amplitude difference value to reduce the noise level of the dual-microphone device and to avoid the fault phenomenon of the uplink voice signal distorted by the position change of a user holding the handset, the monomer microphone difference, the airtight difference of the cavity structure, path attenuation and other factors, therefore, improving the efficiency of sound recognition.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a dual microphone noise reduction method and device thereof, and also to a mobile terminal. Background technique [0002] With the continuous improvement of mobile phone performance, users have higher and higher requirements for voice call quality. At present, it is common to have two microphones on the same mobile phone. In the process of using dual microphones for noise reduction, when voice communication is established, the main microphone and the secondary microphone simultaneously collect user voice, background noise, echo and other information to distinguish Useful and useless information is a key factor for whether a mobile phone can transmit voice completely and clearly. [0003] At present, in order to better perform dual-mic noise reduction processing on voice signals, some mobile phones use the Fluence V5 noise suppression technology for processing. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/19G10L21/0216
CPCH04M1/19G10L21/0216G10L2021/02165
Inventor 刘传彬
Owner PHICOMM (SHANGHAI) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com