WO2015154424A1 - Procédé et système pour déterminer un microphone principal et un microphone auxiliaire parmi de multiples microphones - Google Patents

Procédé et système pour déterminer un microphone principal et un microphone auxiliaire parmi de multiples microphones Download PDF

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Publication number
WO2015154424A1
WO2015154424A1 PCT/CN2014/089211 CN2014089211W WO2015154424A1 WO 2015154424 A1 WO2015154424 A1 WO 2015154424A1 CN 2014089211 W CN2014089211 W CN 2014089211W WO 2015154424 A1 WO2015154424 A1 WO 2015154424A1
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WO
WIPO (PCT)
Prior art keywords
microphone
microphones
signal
noise ratio
main
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PCT/CN2014/089211
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English (en)
Chinese (zh)
Inventor
庄佳麟
马骏
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中兴通讯股份有限公司
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Publication of WO2015154424A1 publication Critical patent/WO2015154424A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Definitions

  • the present invention relates to the field of noise cancellation in mobile terminals, and in particular, to a method and system for determining a primary and secondary microphone from a plurality of microphones.
  • the mobile terminal noise cancellation scheme generally has two microphones, a primary microphone and a secondary microphone.
  • the location of the two has a certain distance requirement.
  • the main microphone collects the voice and the ambient noise
  • the secondary microphone collects the ambient noise and a small amount of the voice signal
  • the ambient noise collected by the two microphones is equivalent, and the voice signal has a large difference.
  • the voice signal collected by the two microphones can eliminate the environmental noise and preserve the voice signal by differential amplification or digital signal processing.
  • the microphone 1 at the lower end of the mobile phone is the main microphone, and the microphone 2 next to the camera in Figure 1b is the vice.
  • Microphone this configuration is generally useful for noise cancellation during a call.
  • the mobile terminal that sets the primary and secondary microphones as described above operates in the camera mode, the main microphone is far away from the sound source, and the sound quality of the recorded sound is not ideal at this time, and there is a large environmental noise.
  • Embodiments of the present invention provide a method and system for determining a primary and secondary microphone from a plurality of microphones to solve the technical problem of how to avoid a low signal-to-noise ratio of a sound signal acquired by a microphone, thereby affecting sound quality.
  • an embodiment of the present invention provides a method for determining a primary and secondary microphone from a plurality of microphones, where the method includes:
  • One of a plurality of microphones other than the main microphone is selected as the sub-microphone.
  • the one of the plurality of microphones other than the main microphone is selected as the sub-microphone.
  • the one of the plurality of microphones other than the main microphone is selected as the sub-microphone.
  • selecting one of the microphones whose signal to noise ratio is less than the set value as the sub microphone includes:
  • a microphone corresponding to the minimum signal to noise ratio is selected as a sub-microphone from a microphone having a signal-to-noise ratio smaller than a set value.
  • the setting a microphone that is closest to the sound source among the plurality of microphones is a main microphone, including:
  • a microphone corresponding to the maximum signal to noise ratio signal is used as a main microphone.
  • the plurality of microphones are microphones on a single terminal.
  • the setting a microphone that is closest to the sound source among the plurality of microphones is a main microphone, including:
  • the microphone that is closest to the sound source is selected as the main microphone according to the type of the terminal running application and the estimated position of the sound source under the application.
  • an embodiment of the present invention further provides a system for determining a primary and secondary microphone from a plurality of microphones, the system comprising: a primary microphone determining unit and a secondary microphone determining unit, wherein
  • the main microphone determining unit is configured to set a microphone that is closest to the sound source among the plurality of microphones as a main microphone;
  • the sub-microphone determination unit is configured to select one of a plurality of microphones other than the main microphone as a sub-microphone.
  • the secondary microphone determining unit is configured to:
  • One of the microphones whose received signal has a signal-to-noise ratio smaller than the set value is selected as the sub-microphone.
  • the secondary microphone determining unit is configured to:
  • a microphone corresponding to the minimum signal to noise ratio is selected as a sub-microphone from a microphone having a signal-to-noise ratio smaller than a set value.
  • the primary microphone determining unit is configured to:
  • a microphone corresponding to the maximum signal to noise ratio signal is used as a main microphone.
  • the system is suitable for a single terminal.
  • the primary microphone determining unit is configured to:
  • the microphone that is closest to the sound source is selected as the main microphone according to the type of the terminal running application and the estimated position of the sound source under the application.
  • the embodiment of the invention further provides a computer program and a carrier thereof, the computer program comprising program instructions, when the program instruction is executed by the terminal device, the terminal device can implement the method for determining the primary and secondary microphones from the plurality of microphones.
  • the primary and secondary microphones can be flexibly switched, and the signal-to-noise ratio of the sound signal acquired by the microphone is low, and the defect of the sound quality is affected.
  • Figure 1a is a side view of the charging hole at the bottom of the mobile phone
  • Figure 1b is a front view and a rear view of the mobile phone
  • FIG. 2 is a flowchart of a method for determining a primary and secondary microphone from a plurality of microphones according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a system for determining a primary and secondary microphone from a plurality of microphones according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of a method for determining a primary and secondary microphone from a plurality of microphones according to an embodiment of the present invention.
  • S201 sets a microphone that is closest to the sound source among the plurality of microphones as a main microphone
  • the signal signal to noise ratio is determined to determine which microphone is closest to the sound source, that is, the maximum signal to noise ratio signal is selected from the signals received by the plurality of microphones; and the microphone corresponding to the maximum signal to noise ratio signal is used as the main microphone. ;
  • the microphone closest to the sound source is selected as the primary microphone according to the type of the terminal running application and the estimated position of the sound source under the application.
  • the microphone of the application is located near the bottom of the terminal according to the posture of most users, so the microphone at the bottom of the terminal is used as the main microphone;
  • the terminal works in the self-camera mode, It is estimated that the sound source of the application is close to the microphone on the back of the terminal, so the microphone on the back of the terminal is used as the main microphone;
  • S202 selects one of a plurality of microphones other than the main microphone as a sub-microphone.
  • the plurality of microphones except the main microphone are sorted according to the signal to noise ratio of the received signal; and one of the microphones having a signal to noise ratio smaller than the set value is selected as the sub microphone, and the set value is used to avoid the main
  • the difference of the sound signals received by the sub-microphone is too small, which causes the voice signal collected by the microphone to weaken the sound signal through differential amplification or digital signal processing, thereby affecting the noise cancellation effect;
  • a microphone corresponding to the minimum signal to noise ratio may be selected as a secondary microphone from a microphone whose signal to noise ratio is less than a set value;
  • the signal to noise ratio difference of the received signals of the primary and secondary microphones may be monitored in real time. If the signal to noise ratio of the primary and secondary microphones does not meet the requirements, the primary and secondary microphones may be re-determined according to the above method. .
  • the above technical solution can be used to select a primary and secondary microphone from a plurality of microphones in a single terminal, and can also be used to select a primary and secondary microphone from a plurality of microphones of a plurality of terminals.
  • the microphone 1 is used as the primary microphone and the microphone 2 is used as the secondary microphone; if the terminal is working in the mode of the main camera for imaging The microphone 2 is used as the main microphone, and the microphone 1 is used as the sub-microphone; if the terminal operates in the mode in which the sub-camera performs imaging, the microphone 1 is used as the main microphone and the microphone 2 is used as the sub-microphone. It can be seen that, by using the method in the embodiment of the present invention, the primary and secondary microphones can be flexibly switched, and the sound acquired by the microphone can be avoided. Signal signal to noise ratio is low, affecting sound quality.
  • FIG. 3 is a structural diagram of a system for determining a primary and secondary microphone from a plurality of microphones according to an embodiment of the present invention.
  • the system includes: a main microphone determining unit and a sub-microphone determining unit, wherein
  • the main microphone determining unit is configured to set a microphone that is closest to the sound source among the plurality of microphones as a main microphone;
  • the primary microphone determining unit may select a maximum signal to noise ratio signal from the signals received by the plurality of microphones; and use a microphone corresponding to the maximum signal to noise ratio signal as a primary microphone;
  • the primary microphone determining unit may further select a microphone that is closest to the sound source as the primary microphone according to the type of the terminal running application and the estimated position of the sound source under the application. ;
  • the sub-microphone determining unit is configured to select one of a plurality of microphones other than the main microphone as a sub-microphone;
  • the sub-microphone determining unit may sort the plurality of microphones except the main microphone according to the signal-to-noise ratio of the received signal; select one of the microphones whose signal-to-noise ratio is less than the set value as the sub-microphone; The value can avoid the difference between the sound signals received by the primary and secondary microphones is too small, which causes the voice signal collected by the microphone to weaken the sound signal through differential amplification or digital signal processing, thereby affecting the noise cancellation effect;
  • a microphone corresponding to the minimum signal to noise ratio may be selected as a secondary microphone from a microphone whose signal to noise ratio is less than a set value;
  • the signal to noise ratio difference of the received signals of the primary and secondary microphones may be monitored in real time. If the signal to noise ratio of the primary and secondary microphones does not meet the requirements, the primary and secondary microphones may be re-determined according to the above method. .
  • the above system can be used to select a primary and secondary microphone from a plurality of microphones in a single terminal, and can also be used to select a primary and secondary microphone from a plurality of microphones of a plurality of terminals.
  • the present invention provides a method and system for determining a primary and secondary microphone from a plurality of microphones, wherein a microphone of the plurality of microphones closest to the sound source is determined as a primary microphone; and one of a plurality of microphones other than the primary microphone is selected as a secondary microphone. It can avoid the technical problem that the sound signal obtained by the microphone has a low signal-to-noise ratio and thus affects the sound quality of the sound.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un procédé et un système pour déterminer un microphone principal et un microphone auxiliaire parmi de multiples microphones. Le procédé consiste à : déterminer un microphone le plus proche d'une source de son parmi de multiples microphones comme microphone principal (S201) ; et sélectionner un microphone, à l'exception du microphone principal, parmi les multiples microphones, comme microphone auxiliaire (S202). Le problème technique selon lequel la qualité sonore est affectée par des rapports signal sur bruit faibles de signaux sonores acquis par les microphones est résolu.
PCT/CN2014/089211 2014-09-10 2014-10-22 Procédé et système pour déterminer un microphone principal et un microphone auxiliaire parmi de multiples microphones WO2015154424A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410457747.XA CN104270489A (zh) 2014-09-10 2014-09-10 一种从多个麦克风中确定主副麦克风的方法和系统
CN201410457747.X 2014-09-10

Publications (1)

Publication Number Publication Date
WO2015154424A1 true WO2015154424A1 (fr) 2015-10-15

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CN106162478A (zh) * 2016-08-16 2016-11-23 北京小米移动软件有限公司 麦克风优选方法及装置
CN113973249A (zh) * 2020-07-24 2022-01-25 华为技术有限公司 耳机通话方法及耳机

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CN105469819A (zh) 2014-08-20 2016-04-06 中兴通讯股份有限公司 麦克选择方法及装置
CN105611014A (zh) * 2014-11-21 2016-05-25 中兴通讯股份有限公司 移动终端通话语音降噪方法及装置
CN105848052B (zh) * 2015-01-16 2019-10-11 宇龙计算机通信科技(深圳)有限公司 一种麦克切换方法及终端
CN104702787A (zh) * 2015-03-12 2015-06-10 深圳市欧珀通信软件有限公司 一种应用于移动终端的声音采集方法和移动终端
CN104869502A (zh) * 2015-03-19 2015-08-26 络达科技股份有限公司 音效增益方法
CN105577909A (zh) * 2015-05-26 2016-05-11 东莞酷派软件技术有限公司 一种消噪方法及装置
CN105162950B (zh) * 2015-07-08 2020-09-25 Tcl移动通信科技（宁波）有限公司 一种移动终端及其实现通话中切换麦克风的方法
CN105554202A (zh) * 2015-09-28 2016-05-04 宇龙计算机通信科技(深圳)有限公司 一种麦克风的控制方法和装置
CN107181845A (zh) * 2016-03-10 2017-09-19 中兴通讯股份有限公司 一种麦克风确定方法和终端
CN105979126A (zh) * 2016-06-13 2016-09-28 努比亚技术有限公司 一种拍摄装置及拍摄控制方法
CN106357871A (zh) * 2016-09-29 2017-01-25 维沃移动通信有限公司 一种扩音方法及移动终端
CN107026934B (zh) * 2016-10-27 2019-09-27 华为技术有限公司 一种声源定位方法和装置
CN107566953A (zh) * 2016-12-12 2018-01-09 北京数科技有限公司 双麦克风的切换方法及装置
CN107277402B (zh) * 2017-05-18 2020-10-02 深圳Tcl新技术有限公司 麦克风设备的切换方法、电视机及计算机可读存储介质
CN107623779A (zh) * 2017-08-31 2018-01-23 维沃移动通信有限公司 一种多媒体数据采集方法及终端
CN110099328B (zh) * 2018-01-31 2024-03-29 北京塞宾科技有限公司 一种智能音箱
CN108737615A (zh) * 2018-06-27 2018-11-02 努比亚技术有限公司 麦克风收音方法、移动终端及计算机可读存储介质
CN110166879B (zh) 2019-06-28 2020-11-13 歌尔科技有限公司 语音采集控制方法、装置及tws耳机
CN111965988A (zh) * 2020-08-14 2020-11-20 深圳市欧瑞博科技股份有限公司 智能设备的控制方法、装置、智能控制开关及存储介质
CN112039959A (zh) * 2020-08-14 2020-12-04 深圳市欧瑞博科技股份有限公司 智能设备的控制方法、装置、智能控制面板及存储介质
CN112002340A (zh) * 2020-09-03 2020-11-27 北京蓦然认知科技有限公司 一种基于多用户的语音采集方法、装置
CN112056763A (zh) * 2020-09-08 2020-12-11 深圳创维－Rgb电子有限公司 智能茶几、语音指令识别方法以及存储介质
CN113099031B (zh) * 2021-02-26 2022-05-17 华为技术有限公司 声音录制方法及相关设备
CN115103267A (zh) * 2022-06-30 2022-09-23 歌尔科技有限公司 一种Beam-forming功能实现方法及系统

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