公开(公告)号：US20160134986A1

公开(公告)日：2016-05-12

申请号：US14896175

申请日：2014-06-27

Applicant: Goertek, Inc.

Inventor： Song Liu ,  Shasha Lou ,  Bo Li

IPC: H04S7/00 ,  G06T7/00 ,  H04N13/00 ,  H04R5/04 ,  H04N5/232

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).

Abstract translation: 一种用于实现自适应环绕声的方法和系统。 该方法包括：通过使用对象识别技术来识别房间中的房间和用户的特定位置，通过使用聚焦控制技术控制摄像机捕获识别对象的聚焦图像，并记录对应的聚焦参数（S110）。 根据图像和参数，计算房间相对于相机的位置信息和用户相对于照相机的位置信息（S120）; 计算能够根据上述计算出的房间和用户的位置信息在所述房间中的用户的位置处实现环绕声的声束（S130）; 根据所计算的声束获得滤波器组的参数，并根据参数调整扬声器阵列的滤波器组（S140）; 并且在通过根据参数调整的滤波器组对音频信号进行滤波之后，通过扬声器阵列播放音频信号，以在用户在房间中的位置处形成环绕声（S150）。

公开(公告)号：US09325855B2

公开(公告)日：2016-04-26

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：US20150189431A1

公开(公告)日：2015-07-02

申请号：US14411651

申请日：2013-12-12

Applicant: Goertek Inc.

Inventor： Shasha Lou ,  Bo Li ,  Qiuchen Huang

IPC: H04R3/00

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）判断混响强度，计算调节因子bgr; 通过获取h（t）的尾部hr（t）来获得增益函数; 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），＆bgr的频谱计算增益函数; （r）}（t）的频谱; 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：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：US20150142426A1

公开(公告)日：2015-05-21

申请号：US14401198

申请日：2013-08-01

Applicant: Goertek, Inc.

Inventor： Liu Song ,  Bo Li ,  Shasha Lou

IPC: G10L21/0208 ,  G10L25/78

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：US20140233723A1

公开(公告)日：2014-08-21

申请号：US14351225

申请日：2013-05-30

Applicant: Goertek, Inc.

Inventor： Shasha Lou ,  Bo Li ,  Xiaojie Wu

IPC: H04M9/08

CPC classification number: H04M9/082 ,  G10L21/02

Abstract: Disclosed in the invention is a method and system for sampling rate mismatch correction of transmitting and receiving terminals, which can obtain a high-precision sampling rate mismatch in real time, carry out sampling rate correction on transmitting and receiving terminal signals, and send the transmitting terminal signal and the receiving terminal signal that have the same sampling rate after corrected to an echo cancellation system to carry out echo cancellation. The present invention can improve the quality of echo cancellation, simplify the computation and reduce the cost. The method for sampling rate mismatch correction of transmitting and receiving terminals provided in the embodiments of the invention comprises: calculating a transfer function of a receiving terminal signal relative to a transmitting terminal signal at each sampling timing according to the transmitting and receiving terminal signals; obtaining a transmission time delay of the transmitting and receiving terminals at each sampling timing using the transfer function; obtaining a sampling rate mismatch of the transmitting and receiving terminals at each sampling timing by means of parameter fitting using the transmission time delay and the linear relationship between the transmission time delay and the sampling rate mismatch; and adjusting the sampling rate of the transmitting terminal signal or the receiving terminal signal at each sampling timing according to the sampling rate mismatch.

Abstract translation: 本发明公开了一种发送和接收终端采样速率失配校正的方法和系统，其可以实时获得高精度采样率失配，对发送和接收终端信号进行采样率校正，并发送 终端信号和接收终端信号，其在校正到回波消除系统之后具有相同的采样率，以执行回声消除。 本发明可以提高回声消除的质量，简化计算并降低成本。 本发明实施例提供的发送和接收终端的采样率失配校正方法包括：根据发送和接收终端信号，在每个采样定时根据发送终端信号计算接收终端信号的传递函数; 使用传递函数在每个采样定时获得发送和接收终端的传输时间延迟; 通过使用传输时间延迟和传输时间延迟与采样率失配之间的线性关系的参数拟合，在每个采样定时获得发射和接收终端的采样率失配; 并且根据采样率不匹配在每个采样定时调整发送终端信号或接收终端信号的采样率。

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：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.

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.

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.