公开(公告)号：US20150172468A1

公开(公告)日：2015-06-18

申请号：US14411669

申请日：2013-12-12

Applicant: Goertek Inc.

Inventor： Song Liu ,  Shasha Lou ,  Bo Li

IPC: H04M9/08 ,  H04B3/20

CPC classification number: H04M9/082 ,  H04B3/20

Abstract: The present invention discloses an echo elimination device and method for a miniature hands-free voice communication system. The system comprises a receiver, a primary transmitter and an auxiliary transmitter, a distance from the primary transmitter to the receiver being greater than that from the auxiliary transmitter to the receiver. The device comprises an array echo elimination unit, a self-adaptive echo elimination unit and a residual echo elimination unit, which are structurally cascaded in turn. The array echo elimination unit, with inputs being a signal of the primary transmitter and a signal of the auxiliary transmitter, performs array filtering to obtain one path of output signals; the self-adaptive echo elimination unit, with the input signals being a signal of the receiver, the output signal of the array echo elimination unit and a signal of the auxiliary transmitter, performs self-adaptive filtering to obtain two paths of output signals; the residual echo elimination unit, with the input signals being the two paths of output signals of the self-adaptive echo elimination unit, performs voice probability estimation and echo matching to obtain an echo-eliminated voice signal. Thus, the duplex performance can be enhanced, and the phase consistency of the transmitters is not strictly required.

Abstract translation: 本发明公开了一种用于微型免提语音通信系统的回波消除装置和方法。 该系统包括接收机，主发射机和辅助发射机，从主发射机到接收机的距离大于从辅助发射机到接收机的距离。 该装置包括依次结构级联的阵列回波消除单元，自适应回波消除单元和残余回波消除单元。 阵列回波消除单元，其中输入是主发射机的信号和辅助发射机的信号，执行阵列滤波以获得一路输出信号; 自适应回波消除单元，其中输入信号是接收机的信号，阵列回波消除单元的输出信号和辅助发射机的信号，执行自适应滤波以获得两路输出信号; 剩余回波消除单元，其中输入信号是自适应回波消除单元的输出信号的两个路径，执行语音概率估计和回波匹配以获得回波消除的语音信号。 因此，可以提高双工性能，并且不严格地要求发射机的相位一致性。

公开(公告)号：US20140172421A1

公开(公告)日：2014-06-19

申请号：US14110879

申请日：2012-03-16

Applicant: GOERTEK INC.

Inventor： Song Liu ,  Bo Li ,  Jian Zhao

IPC: G10L21/0208 ,  H04R1/10

CPC classification number: G10L21/0208 ,  H04R1/1041 ,  H04R1/1083 ,  H04R3/005 ,  H04R2410/01 ,  H04R2410/05

Abstract: The present invention provides a speech enhancing method for communication earphone including two parts: sending end noise reduction processing and receiving end noise reduction processing, wherein the sending end noise reduction processing part includes: determining a wearing condition of the earphone by comparing energy difference of sound signals picked up by microphones of the communication earphone; if the earphone is normally worn, subjecting the sound signal first to multi-microphone noise reduction and then to single channel noise reduction to further suppress residuary stationary noise; otherwise suppressing stationary noise in the sound signal by single channel noise reduction directly.

Abstract translation: 本发明提供了一种用于通信耳机的语音增强方法，包括两个部分：发送端降噪处理和接收端降噪处理，其中发送端噪声降低处理部分包括：通过比较声音的能量差来确定耳机的佩戴状况 由通信耳机的麦克风拾取的信号; 如果耳机通常佩戴，首先对声音信号进行多麦克风降噪，然后进行单声道降噪，以进一步抑制残留的静噪; 否则直接通过单声道降噪来抑制声音信号中的静止噪声。

公开(公告)号：US10302449B2

公开(公告)日：2019-05-28

申请号：US14891581

申请日：2014-12-25

Applicant: Goertek Inc.

Inventor： Song Liu ,  Fupo Wang ,  Na Li

IPC: G01C22/00 ,  A61B5/11 ,  A61B5/00 ,  A63B24/00

Abstract: The present invention provides a step counting method and device. The method comprises the following steps performed repeatedly: a) obtaining three monoaxial acceleration signals with a predetermined length from triaxial output of a triaxial acceleration sensor worn on a walkrunner; b) performing high-pass filtering on each obtained monoaxial acceleration signal; c) performing pitch detection on each high-pass filtered monoaxial acceleration signal; d) using the pitch obtained in each pitch detection as a cut-off frequency to set a low-pass or band-pass filter, and performing low-pass or band-pass filtering on corresponding high-pass filtered monoaxial acceleration signal by using it; e) obtaining acceleration signal extreme value points from each low-pass or band-pass filtered monoaxial acceleration signal and removing interfering extreme value points therein; f) counting the number of the acceleration signal extreme value points after the interfering extreme value points have been removed; g) determining the accumulative walkrun step number of the walkrunner. The method can count steps accurately.

公开(公告)号：US09928825B2

公开(公告)日：2018-03-27

申请号：US15126754

申请日：2015-09-09

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/16 ,  H03B29/00 ,  H04R3/00 ,  G10K11/178 ,  H04R1/10

CPC classification number: G10K11/178 ,  G10K11/1781 ,  G10K11/1785 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  H04R1/1008 ,  H04R1/1083 ,  H04R3/005 ,  H04R2410/07

Abstract: The present method comprises: providing a feedforward microphone outside of each earphone of the active noise-reduction earphones; detecting an amount of external noise by using the feedforward microphone; calculating a weighted energy of a noise signal; and determining whether it is needed to activate the active noise-reduction system based on the weighted energy. When the active noise-reduction control is needed, calculating energy values of two sub-bands, corresponding to the feedforward noise-reduction amount and the feedback noise-reduction amount respectively, in the noise signal, thereby determining the noise-reduction amounts of the feedforward noise reduction system and the feedback noise-reduction system, and controlling the earphone to perform corresponding feedforward noise reduction and feedback noise reduction. Compared with the existing active noise-reduction technologies with a fixed noise reduction, the present invention can optimize the noise-reduction effect.

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).

公开(公告)号：US09635458B2

公开(公告)日：2017-04-25

申请号：US14901564

申请日：2015-05-29

Applicant: Goertek, Inc.

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

IPC: H04R1/10 ,  H04R3/00 ,  A61B5/024 ,  A61B5/00 ,  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.

公开(公告)号：US20140146973A1

公开(公告)日：2014-05-29

申请号：US14234979

申请日：2013-07-17

Applicant: Goertek Inc.

Inventor： Song Liu ,  Jian Zhao ,  Yang Hua

IPC: H04R29/00 ,  H04R1/10

CPC classification number: H04R29/001 ,  H04R1/1083 ,  H04R29/00

Abstract: The present invention discloses a test device and test method for the noise reduction headphone. The test device comprises: an enclosed cavity, a noise source, a test panel, a measuring microphone and a measure comparison module connected with the measuring microphone. The sound emitted from the noise source is sealed within the enclosed cavity. The test panel can cooperate with the noise reduction headphone to form a coupling cavity in the test. The test panel has a sound guiding hole in the common part with the enclosed cavity for transmitting the sound of the noise source into the interior of the coupling cavity. The test panel also has a mounting hole, and the measuring microphone is mounted on the mourning hole towards the direction of the coupling cavity. The measuring microphone records noise signals before and after the noise reduction function of the noise reduction headphone is activated. The measure comparison module receives the signals recorded these two times by the measuring microphone and performs comparison processing to obtain noise reduction amount of the noise reduction headphone. The technical solution of the present invention solves the problem of noise pollution caused by high-power external noise sources to the surrounding environment during the test process of noise reduction amount of the headphone, meanwhile, no special shielding room is required, and the requirement on test environment is relieved.

Abstract translation: 本发明公开了一种用于降噪耳机的测试装置和测试方法。 测试装置包括：封闭空腔，噪声源，测试面板，测量麦克风和与测量麦克风连接的测量比较模块。 从噪声源发出的声音被密封在封闭的腔内。 测试面板可以与降噪耳机配合，在测试中形成耦合腔。 测试面板在与封闭空腔共同的部分中具有声音引导孔，用于将噪声源的声音传递到耦合腔的内部。 测试面板还具有一个安装孔，测量麦克风安装在朝向连接腔方向的悼念孔上。 测量麦克风记录降噪耳机降噪功能前后的噪声信号。 测量比较模块通过测量麦克风接收两次记录的信号，并进行比较处理以获得降噪耳机的噪声降低量。 本发明的技术方案解决了耳机降噪量测试过程中大功率外部噪声源对周围环境造成噪声污染的问题，同时不需要特殊屏蔽室， 测试环境得到缓解。