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1. 发明授权

US11459230B2 MEMS microphone 有权
公开(公告)号：US11459230B2
公开(公告)日：2022-10-04
申请号：US16835805
申请日：2020-03-31
申请人： Fortemedia, Inc.
发明人： Jien-Ming Chen , Feng-Chia Hsu , Wen-Shan Lin , Hsin-Li Lee , Nai-Hao Kuo
IPC分类号： H04R19/00 , B81B3/00 , H04R19/04 , H04R7/04
摘要： A MEMS microphone includes a substrate, a backplate disposed on a side of the substrate, a diaphragm movably disposed between the substrate and the backplate, and a plurality of slots formed on the diaphragm. The slots are spaced apart from each other and have a non-constant width to relieve the residual stress on the diaphragm.

2. 发明授权

US09749746B2 Devices and methods for reducing the processing time of the convergence of a spatial filter 有权
公开(公告)号：US09749746B2
公开(公告)日：2017-08-29
申请号：US15131320
申请日：2016-04-18
申请人： Fortemedia, Inc.
发明人： Yan-Chen Lu
IPC分类号： H04R3/04 , G10L21/00
CPC分类号： H04R3/04 , G10L21/00 , H04R2227/001
摘要： A noise-suppression device includes an input buffer, a spatial filter, a delay buffer, and a controller. The input buffer stores sound data. The spatial filter generates processed data by using an internal adaptive control according to a control signal. The delay buffer stores the processed data. The controller operates in either one of a training stage, a flushing stage, or a normal stage and generates the control signal. When the controller operates in the training stage, the spatial filter receives the sound data from the input buffer to generate the processed data which is continuously processed by the spatial filter and then stored in the delay buffer over and over again until the internal adaptive control is converged.

3. 发明申请

US20140343949A1 SMART MICROPHONE DEVICE 审中-公开
标题翻译：智能麦克风设备
公开(公告)号：US20140343949A1
公开(公告)日：2014-11-20
申请号：US13948840
申请日：2013-07-23
申请人： Fortemedia, Inc.
发明人： Yen-Son Paul HUANG , Iou-Din Jean CHEN , Edward DENG , Lung-Chu Joseph CHEN
IPC分类号： G10L25/48 , H04R1/08
CPC分类号： H04R1/08 , G10L25/78 , G10L2015/088 , H04R3/00 , H04R2499/11
摘要： A smart microphone device is provided. The smart microphone device is coupled to a host, and includes: an analog microphone unit, receiving sounds; a voice detection unit, coupled to the analog microphone unit, detecting voices from the sounds; a speech detection unit, coupled to the voice detection unit, detecting a speech from the voices; and a channel select pin, coupled between the smart microphone device and the host, wherein an interrupt signal is sent from the smart microphone device to the host via the channel select pin to enable the host to operate in the normal mode when the speech detection unit detects the speech.
摘要翻译：提供智能麦克风设备。智能麦克风设备耦合到主机，并且包括：模拟麦克风单元，接收声音; 语音检测单元，耦合到所述模拟麦克风单元，检测来自所述声音的语音; 语音检测单元，耦合到语音检测单元，从语音中检测语音; 以及耦合在所述智能麦克风设备和所述主机之间的通道选择引脚，其中通过所述通道选择引脚从所述智能麦克风设备向所述主机发送中断信号，以使所述主机能够在所述语音检测单元检测语音。

4. 发明申请

US20140321664A1 METHODS FOR DYNAMICALLY PROGRAMMING A MICROPHONE 审中-公开
标题翻译：用于动态编程麦克风的方法
公开(公告)号：US20140321664A1
公开(公告)日：2014-10-30
申请号：US13870364
申请日：2013-04-25
申请人： FORTEMEDIA, INC.
发明人： Yen-Son Paul HUANG , Sho-Mo CHEN , Iou-Din Jean CHEN
IPC分类号： H04R29/00
CPC分类号： H04R29/005 , H04R3/005 , H04R3/02 , H04R29/006 , H04R2410/05
摘要： Methods for dynamically programming a microphone are provided. The method, adopted by a microphone system including a first microphone device and a host device connected thereto, includes: transmitting, by the host device, a command message to the first microphone device; receiving, by the first microphone device, a command message from the host device; decoding, by the first microphone device, the command message; dynamically performing, by the first microphone device, an operation based on the decoded command message to generate first data; and receiving, by the host device, first data from the first microphone device.
摘要翻译：提供了一种用于动态编程麦克风的方法。由包括第一麦克风设备和与其连接的主机设备的麦克风系统采用的方法包括：由主机设备向第一麦克风设备发送命令消息; 由所述第一麦克风设备接收来自所述主机设备的命令消息; 由第一麦克风设备解码命令消息; 通过第一麦克风设备动态地执行基于解码的命令消息的操作以生成第一数据; 以及由主机设备从第一麦克风设备接收第一数据。

5. 发明授权

US08502718B2 Analog-to-digital converter and analog-to-digital conversion method 有权
标题翻译：模数转换器和模数转换方式
公开(公告)号：US08502718B2
公开(公告)日：2013-08-06
申请号：US13017548
申请日：2011-01-31
申请人： Jui-Te Chiu , Ching-Tzung Lin
发明人： Jui-Te Chiu , Ching-Tzung Lin
IPC分类号： H03M3/00
CPC分类号： H04R3/00 , G10L19/04 , G10L19/18 , H03M3/43 , H04R2410/00
摘要： The invention provides an analog-to-digital converter. In one embodiment, the analog-to-digital converter receives a first audio signal from a microphone sensor, and receives a first channel selection signal and a clock signal, and comprises a toggle detection module, a first data processing module, a second data processing module, and a multiplexer. The toggle detection module detects whether the first channel selection signal is toggling between a logic low level and a logic high level to generate a control signal. The first data processing module processes the first channel selection signal to generate a second channel selection signal. The second data processing module converts the first audio signal from analog to digital to generate a second audio signal. If the control signal indicates that the first channel selection signal is toggling between the logic low level and the logic high level, the multiplexer outputs data bits of the second channel selection signal as an output signal of the analog-to-digital converter when the clock signal oscillates to the logic high level, and outputs data bits of the second audio signal as the output signal of the analog-to-digital converter when the clock signal oscillates to the logic low level.
摘要翻译：本发明提供了一种模拟 - 数字转换器。在一个实施例中，模数转换器从麦克风传感器接收第一音频信号，并接收第一信道选择信号和时钟信号，并且包括切换检测模块，第一数据处理模块，第二数据处理模块和多路复用器。触发检测模块检测第一信道选择信号是否在逻辑低电平和逻辑高电平之间切换以产生控制信号。第一数据处理模块处理第一信道选择信号以产生第二信道选择信号。第二数据处理模块将第一音频信号从模拟转换成数字以产生第二音频信号。如果控制信号指示第一通道选择信号在逻辑低电平和逻辑高电平之间切换，则多路复用器输出第二通道选择信号的数据位作为模数转换器的输出信号，当时钟当时钟信号振荡到逻辑低电平时，信号振荡到逻辑高电平，并输出第二音频信号的数据位作为模数转换器的输出信号。

6. 发明授权

US08335324B2 Method and apparatus for automatic volume adjustment 有权
标题翻译：自动调节音量的方法和装置
公开(公告)号：US08335324B2
公开(公告)日：2012-12-18
申请号：US12343842
申请日：2008-12-24
申请人： Ming Zhang , Chi-Chian Yu
发明人： Ming Zhang , Chi-Chian Yu
IPC分类号： H03G3/00
CPC分类号： H03G3/32
摘要： The invention provides an apparatus capable of automatic volume adjustment. In one embodiment, the apparatus comprises a speaker, an array microphone located in the vicinity of the speaker, a beamforming module, a signal-to-noise ratio calculation module, and a volume adjustment module. The speaker first broadcasts a first audio signal. The array microphone converts a sound into a plurality of second audio signals. The beamforming module derives a speaker sound signal and an ambient noise signal from the second audio signals, wherein the speaker sound signal mainly comprises speaker sound components generated by the speaker and the ambient noise signal mainly comprises noises other than the speaker sound components. The signal-to-noise ratio calculation module calculates a ratio of a first power of the speaker sound signal to a second power of the ambient noise signal to obtain a signal-to-noise ratio. The volume adjustment module then adjusts a volume of the first audio signal according to the signal-to-noise ratio before the first audio signal is delivered to the speaker.
摘要翻译：本发明提供一种能够自动调节音量的装置。在一个实施例中，该装置包括扬声器，位于扬声器附近的阵列麦克风，波束形成模块，信噪比计算模块和音量调节模块。扬声器首先广播第一音频信号。阵列麦克风将声音转换成多个第二音频信号。波束成形模块从第二音频信号导出扬声器声音信号和环境噪声信号，其中扬声器声音信号主要包括由扬声器产生的扬声器声音分量，并且环境噪声信号主要包括扬声器声音分量以外的噪声。信噪比计算模块计算扬声器声音信号的第一功率与环境噪声信号的第二功率的比率，以获得信噪比。音量调节模块然后根据在将第一音频信号传送到扬声器之前的信噪比来调节第一音频信号的音量。

7. 发明授权

US08275142B2 Acoustic echo cancellation system 有权
标题翻译：声回声消除系统
公开(公告)号：US08275142B2
公开(公告)日：2012-09-25
申请号：US12044048
申请日：2008-03-07
申请人： Qing-Guang Liu , Wilson Or
发明人： Qing-Guang Liu , Wilson Or
IPC分类号： H03B29/00 , H04B3/20 , H04B15/00 , H04M9/08
CPC分类号： H04M9/082
摘要： An embodiment of an acoustic echo cancellation system is disclosed. The system comprises an echo cancellation unit, a second filter and a subtraction unit. The echo cancellation unit comprises a first attenuator, a first filter and a first subtractor. The first attenuator has a first down-scaling factor for attenuating a first signal. The first filter generates a first echo signal estimate based on the attenuated first signal. The first subtractor generates a third signal by subtracting the first echo signal estimate from a second signal. The second filter generates a second echo signal estimate based on the first signal. The subtraction unit subtracts the second echo signal estimate from the third signal.
摘要翻译：公开了一种声学回声消除系统的实施例。该系统包括回波消除单元，第二滤波器和减法单元。回波消除单元包括第一衰减器，第一滤波器和第一减法器。第一衰减器具有用于衰减第一信号的第一降档因子。第一滤波器基于衰减的第一信号产生第一回波信号估计。第一减法器通过从第二信号中减去第一回波信号估计来产生第三信号。第二滤波器基于第一信号产生第二回波信号估计。减法单元从第三信号中减去第二回波信号估计。

8. 发明申请

US20120128180A1 Analog-to-Digital Converter and Analog-to-Digital Conversion Method 有权
标题翻译：模数转换器和模数转换方法
公开(公告)号：US20120128180A1
公开(公告)日：2012-05-24
申请号：US12950021
申请日：2010-11-19
申请人： Min-Yung Shih , Jui-Te Chiu , Yann-Ming Way , Ching-Tzung Lin , Kuo-Hsuan Chang
发明人： Min-Yung Shih , Jui-Te Chiu , Yann-Ming Way , Ching-Tzung Lin , Kuo-Hsuan Chang
IPC分类号： H03F99/00
CPC分类号： H04R3/00 , G10L19/04 , G10L19/18 , H03M3/43 , H04R2410/00
摘要： The invention provides an analog-to-digital converter. In one embodiment, the analog-to-digital converter receives a first audio signal from a microphone, and comprises a coding selection module, a pre-amplifier, a 1-bit ΔΣ modulator, and a signal coding module. The coding selection module receives a mode signal and a channel selection signal, and generates a control signal according to the mode signal and the channel selection signal. The pre-amplifier amplifies the first audio signal to obtain a second audio signal. The 1-bit ΔΣ modulator converts the second audio signal from analog to digital to obtain a third audio signal. The signal coding module encodes a fourth audio signal according to the third audio signal as an output signal of the analog-to-digital converter when the control signal indicates that the mode signal selects an encoding mode, and forwards the third audio signal as the output signal of the analog-to-digital converter when the control signal indicates that mode signal does not select the encoding mode.
摘要翻译：本发明提供了一种模拟 - 数字转换器。在一个实施例中，模数转换器从麦克风接收第一音频信号，并且包括编码选择模块，前置放大器，1位＆Dgr＆amp; 调制器和信号编码模块。编码选择模块接收模式信号和频道选择信号，并根据模式信号和频道选择信号产生控制信号。前置放大器放大第一音频信号以获得第二音频信号。 1位＆Dgr＆＆调制器将第二音频信号从模拟转换成数字以获得第三音频信号。当控制信号指示模式信号选择编码模式时，信号编码模块将根据第三音频信号的第四音频信号编码为模数转换器的输出信号，并将第三音频信号作为输出当控制信号指示模式信号不选择编码模式时，模数转换器的信号。

9. 发明申请

US20120106755A1 HANDHELD ELECTRONIC DEVICE WITH MICROPHONE ARRAY 审中-公开
标题翻译：带麦克风阵列的手持式电子设备
公开(公告)号：US20120106755A1
公开(公告)日：2012-05-03
申请号：US13346379
申请日：2012-01-09
申请人： Ming ZHANG
发明人： Ming ZHANG
IPC分类号： H04R3/00
CPC分类号： H04R1/406 , H04R3/005
摘要： A handheld electronic device includes a body and a microphone array. The body includes a side and a recess formed on the side. The microphone array includes a first microphone and a second microphone. Either the first and second microphones are disposed in the recess, or the first microphone is disposed in the recess while the second microphone is disposed outside the recess.
摘要翻译：手持电子设备包括主体和麦克风阵列。主体包括形成在侧面上的侧面和凹部。麦克风阵列包括第一麦克风和第二麦克风。第一和第二麦克风都设置在凹部中，或者第一麦克风设置在凹部中，而第二麦克风设置在凹部的外部。

10. 发明授权

US08064619B2 Microphone and integrated circuit capible of echo cancellation 有权
标题翻译：麦克风和回路消除的集成电路
公开(公告)号：US08064619B2
公开(公告)日：2011-11-22
申请号：US12366744
申请日：2009-02-06
申请人： Li-Te Wu
发明人： Li-Te Wu
IPC分类号： H04R3/00 , H03F99/00 , H03B29/00 , G10K11/16
CPC分类号： H04R3/02
摘要： The invention provides an integrated circuit of a microphone. In one embodiment, the integrated circuit receives a first signal converted from a sound and receives a reference signal with a digital format for echo cancellation. In one embodiment, the integrated circuit comprises a pre-amplifier, an analog-to-digital converter, a digital signal processor, and a post amplifier. The pre-amplifier amplifies the first signal according to a first gain to obtain a third signal. The analog-to-digital converter converts the third signal from analog to digital to obtain a fourth signal. The digital signal processor cancels an echo component from the fourth signal according to the reference signal to obtain a fifth signal, and determines the first gain and a second gain, wherein a product of the first gain and the second gain is kept constant, and the first gain is determined so that an amplitude of the third signal is kept equal to an amplitude of the reference signal. The post-amplifier amplifies the fifth signal according to the second gain to obtain a second signal as an output of the integrated circuit.
摘要翻译：本发明提供一种麦克风的集成电路。在一个实施例中，集成电路接收从声音转换的第一信号，并接收具有用于回波消除的数字格式的参考信号。在一个实施例中，集成电路包括前置放大器，模数转换器，数字信号处理器和后置放大器。前置放大器根据第一增益放大第一信号以获得第三信号。模拟 - 数字转换器将第三信号从模拟转换成数字，以获得第四信号。数字信号处理器根据参考信号从第四信号中消除回波分量，以获得第五信号，并且确定第一增益和第二增益，其中第一增益和第二增益的乘积保持不变，并且确定第一增益，使得第三信号的幅度保持等于参考信号的幅度。后置放大器根据第二增益放大第五信号，以获得第二信号作为集成电路的输出。

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