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：US10856777B2

公开(公告)日：2020-12-08

申请号：US15541313

申请日：2016-06-23

Applicant: Goertek Inc.

Inventor： Bo Li ,  Na Li

IPC: A61B5/11 ,  G01C22/00 ,  A61B5/0205 ,  A61B5/00 ,  A61B5/024

Abstract: A method and device for identifying a human movement state that includes: determining according to acceleration signals that are collected by a three-axis acceleration sensor that a human is in a walking state, calculating a walking step number of the human, and calculating a walking step frequency according to the number; calculating a corresponding physical sign frequency during the walking process according to a physical sign signal that is collected; and comparing the walking step frequency and the physical sign frequency that are obtained by calculating respectively with a step frequency threshold and a physical sign frequency threshold, and if the walking step frequency is greater than the step frequency threshold, and the physical sign frequency is greater than the physical sign frequency threshold, determining that the human movement state is a running state, and recording the calculated walking step number to be a running step number.

公开(公告)号：US10432125B2

公开(公告)日：2019-10-01

申请号：US15762100

申请日：2017-09-05

Applicant: Goertek Inc.

Inventor： Yongqiang Feng ,  Lide Wu ,  Bo Li

IPC: H02P23/00 ,  G06F17/50 ,  H02P25/032 ,  G06F3/01

Abstract: A method and circuit for acquiring an output quantity of a linear resonance actuator are disclosed. The method comprises the steps of: establishing a circuit that simulates the linear resonance actuator by using passive electrical devices according to an electrical parameter and a kinematic parameter of the linear resonance actuator, the passive electrical devices comprise at least a resistor, a capacitor and an inductor; selecting a measuring point in the circuit according to an output quantity that the linear resonance actuator needs; and inputting a driving signal of an input source to an input end of the circuit, and collecting an electrical signal that is outputted at the measuring point to obtain the output quantity of the simulated linear resonance actuator. According to the technical solution of the application, a circuit module or system model that simulates the linear resonance actuator is established and used in the process of developing and debugging of projects, to replace the technical solutions that directly use physical actuators, thereby improving the efficiency and avoiding the relying on physical actuators.

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).

公开(公告)号：US20180294757A1

公开(公告)日：2018-10-11

申请号：US15762100

申请日：2017-09-05

Applicant: Goertek Inc.

Inventor： Yongqiang Feng ,  Lide Wu ,  Bo Li

IPC: H02P23/00 ,  H02P25/032 ,  G06F3/01

CPC classification number: H02P23/0022 ,  G06F3/016 ,  G06F17/50 ,  H02P25/032

Abstract: A method and circuit for acquiring an output quantity of a linear resonance actuator are disclosed. The method comprises the steps of: establishing a circuit that simulates the linear resonance actuator by using passive electrical devices according to an electrical parameter and a kinematic parameter of the linear resonance actuator, the passive electrical devices comprise at least a resistor, a capacitor and an inductor; selecting a measuring point in the circuit according to an output quantity that the linear resonance actuator needs; and inputting a driving signal of an input source to an input end of the circuit, and collecting an electrical signal that is outputted at the measuring point to obtain the output quantity of the simulated linear resonance actuator. According to the technical solution of the application, a circuit module or system model that simulates the linear resonance actuator is established and used in the process of developing and debugging of projects, to replace the technical solutions that directly use physical actuators, thereby improving the efficiency and avoiding the relying on physical actuators.

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).

公开(公告)号：US09437209B2

公开(公告)日：2016-09-06

申请号：US14401198

申请日：2013-08-01

Applicant: Goertek, Inc.

Inventor： Liu Song ,  Bo Li ,  Shasha Lou

IPC: G10L21/00 ,  G10L21/0208 ,  H04M1/60 ,  G10L25/78 ,  G10L21/02 ,  G10L21/0216

CPC classification number: G10L21/0208 ,  G10L21/02 ,  G10L25/78 ,  G10L2021/02161 ,  H04M1/6008 ,  H04M2250/12

Abstract: The present invention discloses a speech enhancement method and device for mobile phones. By the method and device provided by the present invention, the mobile phone holding state of a user is detected when the user is talking on the phone, so that different denoising solutions will be employed according to the state of the user in holding the mobile phone. When the user holds the mobile phone normally, a solution integrating multi-microphone denoising and single-microphone denoising will be employed to effectively suppress both the steady noise and the non-steady noise; and when the user holds the mobile phone abnormally, a solution of single-microphone denoising will be employed only to suppress the steady noise. The distortion of speech by multi-microphone denoising is avoided, and the speech quality is ensured.

Abstract translation: 本发明公开了一种用于移动电话的语音增强方法和装置。 通过本发明提供的方法和装置，当用户正在通话时检测用户的手机保持状态，从而根据用户握持手机的状态采用不同的去噪方案 。 当用户正常握住手机时，将采用集成多麦克风去噪和单麦克风去噪的解决方案，有效抑制稳定噪声和非稳定噪声; 当用户手持手机不正常时，单麦克风去噪的解决方案只能用于抑制稳定的噪声。 避免了多麦克风去噪的语音失真，保证了语音质量。

公开(公告)号：US20160206222A1

公开(公告)日：2016-07-21

申请号：US14901581

申请日：2015-05-25

Applicant: GOERTEK INC

Inventor： Song Liu ,  Bo Li ,  Na Li

IPC: A61B5/024 ,  G10L21/0208 ,  H04R1/10 ,  A61B5/00 ,  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。