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    Method and device for reducing voice reverberation based on double microphones
    1.
    发明授权
    Method and device for reducing voice reverberation based on double microphones 有权
    基于双麦克风降低语音混响的方法和设备

    公开(公告)号：US09414157B2

    公开(公告)日：2016-08-09

    申请号：US14411651

    申请日：2013-12-12

    Applicant: Goertek Inc.

    Inventor： Shasha Lou ,  Bo Li ,  Qiuchen Huang

    IPC: H04B3/20 ,  H04R3/00 ,  G10L21/02 ,  G10L21/0216 ,  G10L21/0208

    CPC classification number: H04R3/002 ,  G10L21/02 ,  G10L2021/02082 ,  G10L2021/02165 ,  H04R3/005 ,  H04R2225/43 ,  H04R2227/009

    Abstract: The invention discloses a method and a device for reducing voice reverberation based on double microphones. The method comprises the steps of calculating a transfer function h(t) from a secondary microphone to a primary microphone according to an input signal x2(t) of the primary microphone and an input signal x1(t) of the secondary microphone; judging the strength of reverberation according to h(t) and calculating a regulatory factor β of a gain function by taking a tail section hr(t) of the h(t); obtaining a late reverberation estimation signal {circumflex over (r)}(t) of x2(t) with the convolution of x1(t) and hr(t); calculating the gain function according to the frequency spectrum of x2(t), β and frequency spectrum of {circumflex over (r)}(t); obtaining the reverberation removed frequency spectrum of x2(t) by multiplying the frequency spectrum of x2(t) by the gain function; and obtaining a late reverberation removed time-domain signal of x2(t) by frequency-time conversion. Thus, the late reverberation can be removed from the input signal of the primary microphone, early reverberation can be preserved, processed voice is not caused to be thin, and the voice quality is improved. Meanwhile, spectral subtraction intensity is adjusted according to the strength of the reverberation so as to ensure that the voice is not damaged on the condition that the reverberation is weak and the voice intelligibility is originally high. Accurate estimation of DOA of direct sound is not needed, and therefore the microphones are not required to have high consistency.

    Abstract translation: 本发明公开了一种基于双麦克风来减少语音混响的方法和装置。 该方法包括根据主麦克风的输入信号x2（t）和次麦克风的输入信号x1（t）计算从次麦克风到主麦克风的传递函数h（t）的步骤; 根据h（t）判断混响的强度，并通过采用h（t）的尾段hr（t）计算增益函数的调节因子β; 以x1（t）和hr（t）的卷积获得x2（t）的后期混响估计信号（r（r）}（t））。 根据x2（t），β的频谱和{r（r）}（t）的频谱计算增益函数; 通过将x2（t）的频谱乘以增益函数获得混响去除x2（t）的频谱; 并通过频率 - 时间转换获得后期混响去除x2（t）的时域信号。 因此，可以从主麦克风的输入信号中去除后期混响，可以保持早期混响，处理的声音不会变薄，语音质量得到改善。 同时，根据混响的强度来调整频谱减法强度，以确保在混响弱并且语音清晰度最初高的条件下，声音不被损坏。 直接声音的DOA的精确估计是不需要的，因此麦克风不需要具有高的一致性。

    Heart Rate Detection Method Used In Earphone And Earphone Capable Of Detecting Heart Rate
    2.
    发明申请
    Heart Rate Detection Method Used In Earphone And Earphone Capable Of Detecting Heart Rate 有权
    用于检测心率的耳机和耳机中的心率检测方法

    公开(公告)号：US20160212530A1

    公开(公告)日：2016-07-21

    申请号：US14901564

    申请日：2015-05-29

    Applicant: GOERTEK INC.

    Inventor： Song Liu ,  Bo Li ,  Na Li ,  Shasha Lou

    IPC: H04R3/00 ,  H04R1/10 ,  H04R29/00

    CPC classification number: H04R3/005 ,  A61B5/02438 ,  A61B5/02444 ,  A61B5/6803 ,  A61B5/6817 ,  A61B2562/0204 ,  H04R1/1016 ,  H04R1/1091 ,  H04R29/00

    Abstract: The present invention discloses a heart rate detection method used in an earphone and an earphone capable of detecting heart rate. The method comprises: providing a cavity inside the earphone and installing a microphone in the cavity; a shell of the earphone is provided with a hole at a position where an opening of the cavity clings to, and when the earphone is worn, the cavity and the auricle which the hole clings to form an enclosed space; collecting signals generated by pressure change in the cavity by the microphone when the earphone is worn; and detecting heart rate according to the signals collected by the microphone. According to the technical scheme of the invention, the microphone is placed in the enclosed cavity formed by the cavity in the earphone and the shell of the earphone, which reduces interference of external noises, and reinforces signal information collected by the microphone.

    Abstract translation: 本发明公开了一种能够检测心率的耳机和耳机中使用的心率检测方法。 该方法包括：在耳机内提供空腔并在空腔中安装麦克风; 耳机的壳体在空腔的开口附着的位置处设置有孔，并且当耳机被佩戴时，空腔和耳罩的耳廓形成封闭空间; 当耳机佩戴时，通过麦克风收集由空腔中的压力变化产生的信号; 并根据麦克风收集的信号检测心率。 根据本发明的技术方案，麦克风被放置在由耳机中的空腔和耳机壳体形成的封闭空腔中，这减少了外部噪声的干扰，并且增强了由麦克风收集的信号信息。

    Photoelectric type pulse signal measuring method and apparatus
    4.
    发明授权
    Photoelectric type pulse signal measuring method and apparatus 有权

    公开(公告)号：US09949695B2

    公开(公告)日：2018-04-24

    申请号：US15126873

    申请日：2015-08-03

    Applicant: Goertek Inc.

    Inventor： Song Liu ,  Shasha Lou ,  Bo Li

    IPC: A61B5/00 ,  A61B5/024

    CPC classification number: A61B5/725 ,  A61B5/02 ,  A61B5/024 ,  A61B5/6803 ,  A61B5/6831 ,  A61B5/7207 ,  A61B5/7282

    Abstract: A photoelectric type pulse signal measuring method includes, obtaining a main-path light signal transmitted by a photoelectric transmitter and reflected back from a surface of skin having an artery underneath, obtaining at least one auxiliary-path light signal receiving an ambient light signal, and based on the at least one auxiliary-path light signal, adaptively filtering an ambient light interference from the main-path light signal and obtaining an adaptive filtration result; or obtaining at least one auxiliary-path light signal transmitted by the same photoelectric transmitter and reflected back from a surface of skin without any artery underneath, and based on the auxiliary-path light signal, adaptively filtering a motion interference from the main-path light signal; then extracting a pulse signal from the adaptive filtration result. The present invention can simply and effectively eliminate the ambient light interference or motion interference upon photoelectric pulse signal measurement. Photoelectric type pulse signal measuring devices are also disclosed.

    Tactile vibration control system and method for smart terminal
    5.
    发明授权
    Tactile vibration control system and method for smart terminal 有权

    公开(公告)号：US10122310B2

    公开(公告)日：2018-11-06

    申请号：US15324237

    申请日：2016-06-23

    Applicant: Goertek Inc.

    Inventor： Bo Li ,  Yongqiang Feng ,  Shasha Lou

    IPC: H04B3/36 ,  H02P25/032 ,  G05D19/02 ,  H02K33/04 ,  G08B6/00

    Abstract: A tactile vibration control system and method for a smart terminal. The system includes: a command generator, a tactile driver, a linear resonant actuator, a sensing module, a feedback unit and a comparator; by arranging a plurality of sensors that monitor or sense the vibrating status of the linear resonant actuator, channels of the sensor signals are generated when the actuator vibrates; the feedback unit sends the sensing signals characterizing the physical quantities related to the vibration modes output by the plurality of sensors to the comparator as the feedback signal; and the comparator generates an error signal according to the feedback signal and a desired signal in the input signal and sends the error signal to the command generator so that the command generator adjusts the generated initial commanding signal according to the error signal and achieves the close-loop control of the linear resonant actuator.

    Tactile vibration control system and method for smart terminal
    6.
    发明授权
    Tactile vibration control system and method for smart terminal 有权

    公开(公告)号：US10109163B2

    公开(公告)日：2018-10-23

    申请号：US15324151

    申请日：2016-06-23

    Applicant: Goertek Inc.

    Inventor： Bo Li ,  Yongqiang Feng ,  Shasha Lou

    IPC: G06F3/01 ,  G08B6/00 ,  G05D19/02

    Abstract: A tactile vibration control system and method for a smart terminal. The system includes a command generator, a filter, a tactile driver and a linear resonant actuator; the command generator generates an initial commanding signal according to an input signal; the filter filters the initial commanding signal so that amplitudes of a predetermined number of initial pulses of the filtered commanding signal are larger than a set threshold and phases of a predetermined number of ending pulses reverse; and the tactile driver generates a driving signal according to the filtered commanding signal for driving the actuator to vibrate. The initial commanding signal generated by the command generator is filtered so that when the actuator is driven to vibrate by the driving signal generated subsequently, the actuator has a quick starting response and a quick braking response.

    Method And System For Achieving Self-Adaptive Surround Sound
    7.
    发明申请
    Method And System For Achieving Self-Adaptive Surround Sound 审中-公开

    公开(公告)号：US20180020311A1

    公开(公告)日：2018-01-18

    申请号：US15718184

    申请日：2017-09-28

    Applicant: Goertek, Inc.

    Inventor： Song Liu ,  Shasha Lou ,  Bo Li

    IPC: H04S7/00 ,  H04N5/232 ,  H04R5/04 ,  H04N13/00 ,  H04R1/40 ,  H04N21/439 ,  H04N21/4223

    CPC classification number: H04S7/303 ,  G06T7/50 ,  G06T2207/10028 ,  G06T2207/10148 ,  G06T2207/30201 ,  H04N5/23212 ,  H04N13/128 ,  H04N21/4223 ,  H04N21/439 ,  H04R1/403 ,  H04R5/04 ,  H04R2203/12

    Abstract: A method and a system for achieving a self-adaptive surround sound. The method comprises: recognizing specific positions of a room and a user in the room by using an object recognition technology, capturing focusing images of recognized objects by controlling a camera using a focusing control technology, and recording corresponding focusing parameters (S110); calculating position information of the room relative to the camera and position information of the user relative to the camera according to the images and the parameters (S120); calculating sound beams that can achieve the surround sound at the position of the user in said room according to aforesaid calculated position information of the room and the user (S130); obtaining parameters of a filter group according to the calculated sound beams, and adjusting the filter group of a loudspeaker array according to the parameters (S140); and playing an audio signal via the loudspeaker array after the audio signal is filtered by the filter group that has been adjusted according to the parameters to form surround sound at the position of the user in the room (S150).

    Method and system for achieving self-adaptive surround sound
    9.
    发明授权
    Method and system for achieving self-adaptive surround sound 有权

    公开(公告)号：US10375502B2

    公开(公告)日：2019-08-06

    申请号：US15718184

    申请日：2017-09-28

    Applicant: Goertek, Inc.

    Inventor： Song Liu ,  Shasha Lou ,  Bo Li

    IPC: H04S7/00 ,  H04N13/128 ,  H04R1/40 ,  H04N5/232 ,  H04R5/04 ,  G06T7/50 ,  H04N21/4223 ,  H04N21/439

    Abstract: A method and a system for achieving a self-adaptive surround sound. The method comprises: recognizing specific positions of a room and a user in the room by using an object recognition technology, capturing focusing images of recognized objects by controlling a camera using a focusing control technology, and recording corresponding focusing parameters (S110); calculating position information of the room relative to the camera and position information of the user relative to the camera according to the images and the parameters (S120); calculating sound beams that can achieve the surround sound at the position of the user in said room according to aforesaid calculated position information of the room and the user (S130); obtaining parameters of a filter group according to the calculated sound beams, and adjusting the filter group of a loudspeaker array according to the parameters (S140); and playing an audio signal via the loudspeaker array after the audio signal is filtered by the filter group that has been adjusted according to the parameters to form surround sound at the position of the user in the room (S150).

    Method and system for achieving self-adaptive surround sound
    10.
    发明授权
    Method and system for achieving self-adaptive surround sound 有权

    公开(公告)号：US09807536B2

    公开(公告)日：2017-10-31

    申请号：US14896175

    申请日：2014-06-27

    Applicant: Goertek, Inc.

    Inventor： Song Liu ,  Shasha Lou ,  Bo Li

    IPC: H04S7/00 ,  H04R1/40 ,  H04N5/232 ,  H04N13/00 ,  H04R5/04 ,  G06T7/50 ,  H04N21/4223 ,  H04N21/439

    CPC classification number: H04S7/303 ,  G06T7/50 ,  G06T2207/10028 ,  G06T2207/10148 ,  G06T2207/30201 ,  H04N5/23212 ,  H04N13/128 ,  H04N21/4223 ,  H04N21/439 ,  H04R1/403 ,  H04R5/04 ,  H04R2203/12

    Abstract: A method and a system for achieving a self-adaptive surround sound. The method comprises: recognizing specific positions of a room and a user in the room by using an object recognition technology, capturing focusing images of recognized objects by controlling a camera using a focusing control technology, and recording corresponding focusing parameters (S110); calculating position information of the room relative to the camera and position information of the user relative to the camera according to the images and the parameters (S120); calculating sound beams that can achieve the surround sound at the position of the user in said room according to aforesaid calculated position information of the room and the user (S130); obtaining parameters of a filter group according to the calculated sound beams, and adjusting the filter group of a loudspeaker array according to the parameters (S140); and playing an audio signal via the loudspeaker array after the audio signal is filtered by the filter group that has been adjusted according to the parameters to form surround sound at the position of the user in the room (S150).

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