公开(公告)号：US10115387B2

公开(公告)日：2018-10-30

申请号：US15857903

申请日：2017-12-29

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/16 ,  G10K11/178 ,  H04R1/10

Abstract: A noise-reduction control method includes performing frequency-domain weighting and temporal-domain weighting to a noise signal collected at current time to obtain a weighted energy. Judging whether active noise-reduction control is needed based on the weighted energy; calculating an energy value of a first sub-band and an energy value of a second sub-band of the noise signal collected by the feedforward microphone at the current time, wherein the first sub-band and the second sub-band are determined based on a feedforward noise-reduction curve and a feedback noise-reduction curve of the earphone, respectively. Determining a feedforward noise-reduction amount and a feedback noise-reduction amount based on the energy value of the first sub-band and the energy value of the second sub-band, respectively. Controlling the earphone to perform feedforward noise reduction based on the feedforward noise-reduction amount, and controlling the earphone to perform feedback noise reduction based on the feedback noise-reduction amount.

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。

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。

公开(公告)号：US10034077B2

公开(公告)日：2018-07-24

申请号：US15312435

申请日：2016-07-21

Applicant: Goertek Inc.

Inventor： Song Liu ,  Shasha Lou ,  Bo Li ,  Hui Qi

IPC: H04R1/00 ,  H04R1/10 ,  G10K11/178 ,  G08B21/18

CPC classification number: H04R1/1041 ,  G08B21/182 ,  G10K11/178 ,  G10K2210/1081 ,  H04R1/1083 ,  H04R3/00 ,  H04R2420/07 ,  H04R2430/01 ,  H04R2460/01 ,  H04R2460/07

Abstract: An earphone control method, an earphone control system and an earphone. The earphone control method includes: selecting a motion state judgement parameter of a wearer for controlling an earphone and setting an alert condition according to the selected motion state judgement parameter; real-timely monitoring and acquiring behavior data of the earphone wearer; calculating the motion state judgement parameter by using the acquired behavior data to obtain a motion state judgement parameter value; and judging whether or not the motion state judgement parameter value satisfies the alert condition; if the motion state judgement parameter value satisfies the alert condition, determining to enter an earphone alert state and controlling to perform corresponding alert operation on the earphone.

公开(公告)号：US20180122359A1

公开(公告)日：2018-05-03

申请号：US15857903

申请日：2017-12-29

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/178 ,  H04R1/10

CPC classification number: G10K11/17815 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  H04R1/1008 ,  H04R1/1016 ,  H04R1/1083 ,  H04R2410/05 ,  H04R2410/07 ,  H04R2460/01

Abstract: A noise-reduction control method includes performing frequency-domain weighting and temporal-domain weighting to a noise signal collected at current time to obtain a weighted energy. Judging whether active noise-reduction control is needed based on the weighted energy; calculating an energy value of a first sub-band and an energy value of a second sub-band of the noise signal collected by the feedforward microphone at the current time, wherein the first sub-band and the second sub-band are determined based on a feedforward noise-reduction curve and a feedback noise-reduction curve of the earphone, respectively. Determining a feedforward noise-reduction amount and a feedback noise-reduction amount based on the energy value of the first sub-band and the energy value of the second sub-band, respectively. Controlling the earphone to perform feedforward noise reduction based on the feedforward noise-reduction amount, and controlling the earphone to perform feedback noise reduction based on the feedback noise-reduction amount.

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.

公开(公告)号：US10718617B2

公开(公告)日：2020-07-21

申请号：US15742761

申请日：2017-09-13

Applicant: Goertek Inc.

Inventor： Jiudong Wang ,  Bo Li ,  Hui Qi

IPC: G01C21/08 ,  G01R33/02 ,  G01C21/20 ,  G01C25/00

Abstract: The present invention discloses a method and an apparatus for measuring a posture angle of an object. The method comprises the following steps: arranging a sensor in a measured object, the sensor being used for measuring characteristic quantities of magnetic field in three dimensional directions; actuating the sensor at the beginning of the measurement, and acquiring, by using the sensor, a current measured value of the characteristic quantity of magnetic field of the measured object in a carrier coordinate system; acquiring reference values of the characteristic quantities of magnetic field of the measured object in a geographic coordinate system; and calculating a current posture angle of the measured object according to numerical values of the characteristic quantities of magnetic field indicated by the reference value and the measured value in each direction respectively.

公开(公告)号：US10477319B2

公开(公告)日：2019-11-12

申请号：US16304623

申请日：2017-06-12

Applicant: Goertek Inc.

Inventor： Shasha Lou ,  Na Li ,  Bo Li

IPC: H04R1/10 ,  G06F3/01 ,  H04R29/00 ,  H04R5/04 ,  H04R5/033 ,  G06F1/3296 ,  G06F1/3231

Abstract: A wearing state detection method for a wearable device and a device. The detection method comprises: providing in the wearable device a sensor in an area capable of contacting the skin of a user, wherein the sensor outputs different measurement values when the user wears or takes off the wearable device; acquiring a base value indicating whether the wearable device is being worn; after wearing detection has been started up, collecting measurement values from the sensor at a preset sampling frequency; judging whether the wearable device is currently in a wearing state according to the measurement values and the base value; and controlling the wearable device to turn off a corresponding function that is running when the wearable device is in a non-wearing state. The method and the device can reduce the power consumption and simplify user operation.

公开(公告)号：US09749732B2

公开(公告)日：2017-08-29

申请号：US15115525

申请日：2015-09-09

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: H04R1/10 ,  H04R29/00 ,  H03G5/16

CPC classification number: H04R1/1041 ,  H03G5/165 ,  H04R1/1083 ,  H04R3/04 ,  H04R29/001 ,  H04R2430/03 ,  H04R2460/15

Abstract: The present invention discloses a method and an apparatus for earphone sound effect compensation and an earphone. The method of the present invention comprises: obtaining monitored signal data in a current wearing state of an earphone user according to a signal collected by a monitoring microphone and an audio signal played by a loudspeaker of the earphone; computing error data of the monitored signal data in the current wearing state relative to standard signal data in a standard wearing state of the earphone; and performing sound effect compensation to the earphone according to the error data. The technical solution of the present invention adopts an adaptive digital signal processing manner, which can dynamically compensate for sound effects in different earphone wearing manners and enable an earphone user to appreciate an audible effect in a standard earphone wearing state.

公开(公告)号：US09579029B2

公开(公告)日：2017-02-28

申请号：US14901581

申请日：2015-05-25

Applicant: Goertek, Inc.

Inventor： Song Liu ,  Bo Li ,  Na Li

IPC: A61B5/0245 ,  A61B5/024 ,  H04R1/10 ,  A61B5/00 ,  G10L21/0208 ,  H04R29/00

CPC classification number: A61B5/02438 ,  A61B5/024 ,  A61B5/02444 ,  A61B5/6803 ,  A61B5/721 ,  A61B5/7225 ,  A61B2562/0247 ,  G10L21/0208 ,  H04R1/10 ,  H04R1/1016 ,  H04R1/1041 ,  H04R1/1075 ,  H04R1/1083 ,  H04R1/1091 ,  H04R3/00 ,  H04R29/004

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; providing an acceleration sensor in the earphone; performing self-adaptive filtering process on signals collected by the acceleration sensor, and obtaining estimated signals of the signals generated by body movement of a wearer in the signals collected by the microphone; subtracting the estimated signals from the signals collected by the microphone to obtain signals related to heart rate; and detecting heart rate according to the signals related to heart rate. The technical scheme of the invention adopts an enclosed cavity to place the microphone to reduce interference of external noises and reinforce signal information collected by the microphone. By performing self-adaptive filtering on signals collected by the acceleration sensor to obtain estimated signals, subtracting the estimated signals from the signals collected by the microphone, and then detecting the heart rate, the influence of the body movement of the wearer on heart rate detection can be eliminated.

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，并在麦克风中安装麦克风; 在耳机中提供加速度传感器; 对由加速度传感器收集的信号执行自适应滤波处理，并且获取由麦克风收集的信号中穿戴者身体运动产生的信号的估计信号; 从麦克风收集的信号中减去估计信号，以获得与心率相关的信号; 并根据与心率相关的信号检测心率。 本发明的技术方案采用封闭腔放置麦克风以减少外部噪声的干扰，并加强麦克风收集的信号信息。 通过对由加速度传感器收集的信号执行自适应滤波以获得估计信号，从麦克风收集的信号中减去估计信号，然后检测心率，穿戴者身体运动对心率检测的影响 可以消除。