公开(公告)号：US20160381456A1

公开(公告)日：2016-12-29

申请号：US14902398

申请日：2014-06-27

申请人： ROBERT BOSCH GMBH

发明人： Andrew J. Doller

IPC分类号： H04R3/00 ,  H04R1/04 ,  H04R19/04

CPC分类号： H04R3/005 ,  H04R1/04 ,  H04R19/005 ,  H04R19/04 ,  H04R29/004 ,  H04R29/006 ,  H04R2201/003

摘要： In one embodiment, the invention is a microphone system for adjusting the final output sensitivity of a microphone. The system includes transducers that output transducer signals. The system also includes bias circuits providing bias signals to the transducers, as well as amplifiers to receive the transducer signals and output amplified signals. The amplified signals are summed by a summer, which outputs a summed signal. A controller receives the summed signal, and is configured to obtain a desired microphone output characteristic and calculate adjustment amounts based on the characteristic. The controller modifies signals from the transducers based on the adjustment amounts. The controller then outputs a microphone signal based on the summed signal. In another embodiment, the invention provides a method for adjusting the final output sensitivity of a microphone.

摘要翻译： 在一个实施例中，本发明是用于调节麦克风的最终输出灵敏度的麦克风系统。 该系统包括输出换能器信号的换能器。 该系统还包括向换能器提供偏置信号的偏置电路，以及用于接收换能器信号和输出放大信号的放大器。 放大的信号由加法器相加，其输出加和信号。 控制器接收相加的信号，并且被配置为获得期望的麦克风输出特性，并且基于该特性来计算调整量。 控制器根据调节量修改来自换能器的信号。 然后，控制器基于求和信号输出麦克风信号。 在另一个实施例中，本发明提供一种用于调节麦克风的最终输出灵敏度的方法。

公开(公告)号：US20160118062A1

公开(公告)日：2016-04-28

申请号：US14922475

申请日：2015-10-26

申请人： Personics Holdings, LLC

发明人： John Usher

IPC分类号： G10L25/84 ,  H04R1/10 ,  G10L21/0264 ,  H04R29/00 ,  G10L21/0224

CPC分类号： G10L21/034 ,  G10L25/78 ,  H03G3/341 ,  H04R1/1083 ,  H04R29/006

摘要： An electronic device or method for adjusting a gain on a voice operated control system can include one or more processors and a memory having computer instructions. The instructions, when executed by the one or more processors causes the one or more processors to perform the operations of receiving a first microphone signal, receiving a second microphone signal, updating a slow time weighted ratio of the filtered first and second signals, and updating a fast time weighted ratio of the filtered first and second signals. The one or more processors can further perform the operations of calculating an absolute difference between the fast time weighted ratio and the slow time weighted ratio, comparing the absolute difference with a threshold, and increasing the gain when the absolute difference is greater than the threshold. Other embodiments are disclosed.

摘要翻译： 用于调节语音操作控制系统上的增益的电子设备或方法可以包括一个或多个处理器和具有计算机指令的存储器。 所述指令在由所述一个或多个处理器执行时使得所述一个或多个处理器执行接收第一麦克风信号的操作，接收第二麦克风信号，更新经滤波的第一和第二信号的慢时间加权比，以及更新 滤波的第一和第二信号的快速时间加权比。 一个或多个处理器可以进一步执行计算快速时间加权比和慢时间加权比之间的绝对差的操作，将绝对差与阈值进行比较，以及当绝对差大于阈值时增加增益。 公开了其他实施例。

公开(公告)号：US09258661B2

公开(公告)日：2016-02-09

申请号：US14139370

申请日：2013-12-23

申请人： QUALCOMM Incorporated

发明人： Jimeng Zheng ,  Ian Ernan Liu ,  Dinesh Ramakrishnan ,  Deepak Kumar Challa

IPC分类号： H04R29/00 ,  H04R3/00 ,  G10L25/84

CPC分类号： H04R29/006 ,  G10L25/84 ,  H04R3/005

摘要： A method includes receiving, at a processor, a first data frame at a first time from a first microphone. The method also includes receiving a second data frame at the first time from a second microphone. The method further includes calculating a power ratio of the first microphone and the second microphone based on the first data frame and the second data frame in response to determining that the first data frame and the second data frame are noise data frames.

摘要翻译： 一种方法包括在处理器处从第一麦克风在第一时间接收第一数据帧。 该方法还包括在第一时间从第二麦克风接收第二数据帧。 该方法还包括响应于确定第一数据帧和第二数据帧是噪声数据帧，基于第一数据帧和第二数据帧计算第一麦克风和第二麦克风的功率比。

公开(公告)号：US08879749B2

公开(公告)日：2014-11-04

申请号：US13390373

申请日：2011-06-16

申请人： Yasuhiro Terada ,  Takeo Kanamori

发明人： Yasuhiro Terada ,  Takeo Kanamori

IPC分类号： H04R3/00 ,  H04R29/00 ,  H04R1/40 ,  H04R25/00

CPC分类号： H04R29/006 ,  H04R1/406 ,  H04R3/005 ,  H04R25/407 ,  H04R2430/03

摘要： A directional microphone apparatus and directivity control method that corrects a level difference and a phase difference generated in a low band in a plurality of non-directional microphone units, improve the directivity, and reduce the size are provided. Level difference calculation section (105) calculates the level difference between first signal x1(t) obtained by first non-directional microphone unit (101) and second signal x2(t) obtained by second non-directional microphone unit (102), and correction parameter calculation section (106) calculates coefficients of a linear IIR filter configuring correction process section (103) based on the level difference. Correction process section (103) simultaneously corrects the level difference and a phase difference in the low band between two non-directional microphone units by using the calculated coefficients.

摘要翻译： 定向麦克风装置和方向性控制方法，其校正多个非定向麦克风单元中的低频中产生的电平差和相位差，提高方向性，并提供减小尺寸。 电平差计算部（105）计算由第一非定向麦克风单元（101）获得的第一信号x1（t）和由第二非定向麦克风单元（102）获得的第二信号x2（t）之间的电平差， 参数计算部（106）基于该电平差计算线性IIR滤波器构成校正处理部（103）的系数。 校正处理部（103）通过使用计算出的系数同时校正两个非定向麦克风单元之间的低频带的电平差和相位差。

公开(公告)号：US08873773B2

公开(公告)日：2014-10-28

申请号：US13455331

申请日：2012-04-25

申请人： Hiroshi Akino

发明人： Hiroshi Akino

IPC分类号： H04R3/00 ,  H04R29/00 ,  H04R19/04

CPC分类号： H04R29/006 ,  H04R19/04

摘要： A condenser microphone includes multiple condenser microphone units. Each unit includes an impedance converter. The condenser microphone units are connected in series such that outputs of the impedance converter in one of the condenser microphone units drive another of the condenser microphone units. A polarization voltage is accumulated to a DC voltage supplied from a DC voltage supply through a voltage adjuster to be applied to one of a diaphragm and a fixed electrode, and a voltage applied to the one of the diaphragm and the fixed electrode is adjusted by the voltage adjuster.

摘要翻译： 电容麦克风包括多个电容麦克风单元。 每个单元包括一个阻抗转换器。 电容麦克风单元串联连接，使得其中一个电容式麦克风单元中的阻抗转换器的输出驱动另一个电容麦克风单元。 极化电压被累积到通过电压调节器从直流电压源提供的直流电压，以施加到隔膜和固定电极中的一个，并且施加到隔膜和固定电极中的一个的电压通过 电压调节器

公开(公告)号：US20140286497A1

公开(公告)日：2014-09-25

申请号：US14216769

申请日：2014-03-17

申请人： Broadcom Corporation

发明人： Jes Thyssen ,  Ashutosh Pandey ,  Bengt J. Borgstrom ,  Daniele Giacobello ,  Juin-Hwey Chen

IPC分类号： G10K11/16 ,  H04R3/00

CPC分类号： H04R3/005 ,  H04R29/006 ,  H04R2203/12 ,  H04R2410/01 ,  H04R2430/21 ,  H04R2430/23 ,  H04R2430/25

摘要： Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.

摘要翻译： 描述了改进的多麦克风源跟踪和噪声抑制的方法，系统和装置。 在多麦克风设备和系统中，在每个麦克风输入端执行频域声学回声消除，并对麦克风电平和灵敏度进行归一化。 还描述了用于改进的声场分析和源跟踪的方法，系统和装置，其使用转向零误差变换，在线自适应声场建模和与扬声器相关的信息。 开关超方向波束成形加强了所需的音频源，并且封闭形式的阻塞矩阵基于从麦克风配对得到的空间信息来抑制所需音频源。 跟踪统计信息，并用于更新过滤器和模型。 还描述了单用户和多用户场景的自动检测，以及使用空间信息，非空间信息和残余回声的单信道抑制。

公开(公告)号：US08649539B2

公开(公告)日：2014-02-11

申请号：US13170944

申请日：2011-06-28

申请人： Kim S. Petersen

发明人： Kim S. Petersen

IPC分类号： H04R25/00

CPC分类号： H04R29/006 ,  H04R3/005 ,  H04R25/43 ,  H04R2225/025 ,  H04R2225/41 ,  H04R2225/61

摘要： A method for processing the signals from two or more microphones in a listening device, and a listening device for conducting the method which has a casing holding the microphones, a signal processing unit which provides an output signal corresponding to the microphone signals and suited to the user's hearing, and a receiver unit for delivering the output signal to the user whereby the signals from the microphones are analyzed in order to detect when the casing of the listening device is being touched, whereby further the signal processing of the signal processing unit changes whenever touching of the casing is detected.

摘要翻译： 一种用于处理来自听音装置中的两个或多个麦克风的信号的方法，以及用于进行具有保持麦克风的外壳的方法的收听装置，信号处理单元，其提供对应于麦克风信号的输出信号并且适合于 用户的听力以及用于向用户传送输出信号的接收器单元，由此分析来自麦克风的信号，以便检测何时正在触摸听音装置的外壳，由此信号处理单元的信号处理进一步随时改变 检测到壳体的触摸。

公开(公告)号：US20130343571A1

公开(公告)日：2013-12-26

申请号：US13531211

申请日：2012-06-22

申请人： Jitendra D. Rayala ,  Krishna Vemireddy

发明人： Jitendra D. Rayala ,  Krishna Vemireddy

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  H04R29/006 ,  H04R2460/01

摘要： A microphone array processing system and method carried out in the system. In one embodiment, the system includes: (1) a beamformer configured to perform adaptive beamforming on gain-compensated signals received from a plurality of microphones, the adaptive beamforming including dynamic range compression and diagonal loading of a sample correlation matrix based on order statistics and (2) a postfilter configured to receive an output of the beamformer and reduce noise components remaining from the beamforming.

摘要翻译： 麦克风阵列处理系统和方法在系统中执行。 在一个实施例中，系统包括：（1）波束形成器，被配置为在从多个麦克风接收的增益补偿信号上执行自适应波束形成，所述自适应波束成形包括基于顺序统计的样本相关矩阵的动态范围压缩和对角加载， （2）后滤波器，被配置为接收所述波束形成器的输出并减少从所述波束成形剩余的噪声分量。

公开(公告)号：US20130243221A1

公开(公告)日：2013-09-19

申请号：US13721753

申请日：2012-12-20

申请人： UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO., LTD. ,  UNIVERSAL GLOBAL SCIENTIFIC INDUSTRIAL CO., LTD.

发明人： CHENG-HUI HSIEH ,  YU-CHENG LIU ,  JIN-HUANG HUANG

IPC分类号： H03G5/16

CPC分类号： H03G5/165 ,  G01D5/00 ,  H04R1/222 ,  H04R3/005 ,  H04R29/004 ,  H04R29/006

摘要： An exemplary embodiment illustrates an equalization pre-processing method, adapted for characterizing a second sound receptor unit in a sound receiving system based on knowing the internal structure parameters of a first sound receptor unit. The method includes: measuring a first sensitivity response of the first sound receptor unit and a second sensitivity response of the second sound receptor unit; equalizing the second sensitivity response according to the first sensitivity response and obtaining the differences in the sensitivity response; conducting simulation to obtain the third sensitivity response associated with the first sound receptor unit in the given sound receiving system; compensating the third sensitivity response to generate the fourth sensitivity response associated with the second sound receptor unit in the sound receiving system according to the differences in the sensitivity response; analyzing the fourth sensitivity response to characterize the second sound receptor unit in the given sound receiving system.

摘要翻译： 示例性实施例示出了均衡预处理方法，其适于基于知道第一声音接收器单元的内部结构参数来表征声音接收系统中的第二声音接收器单元。 该方法包括：测量第一声音接收器单元的第一灵敏度响应和第二声音接收器单元的第二灵敏度响应; 根据第一灵敏度响应均衡第二灵敏度响应并获得灵敏度响应的差异; 进行模拟以获得与给定声音接收系统中的第一声音接收器单元相关联的第三灵敏度响应; 根据灵敏度响应的差异，补偿第三灵敏度响应以产生与声音接收系统中的第二声音接收器单元相关联的第四灵敏度响应; 分析给定声音接收系统中的第二灵敏度响应以表征第二声音接收器单元。

公开(公告)号：US08515093B2

公开(公告)日：2013-08-20

申请号：US12900322

申请日：2010-10-07

申请人： Sanjay M. Bhandari ,  Paul D. Smith ,  Jiang (Jennifer) Yu ,  Sheng-Yu Peng ,  Priscilla E. Escobar-Bowser

发明人： Sanjay M. Bhandari ,  Paul D. Smith ,  Jiang (Jennifer) Yu ,  Sheng-Yu Peng ,  Priscilla E. Escobar-Bowser

IPC分类号： H04R3/00 ,  H03G5/00

CPC分类号： H04R29/006 ,  H04R3/005 ,  H04R25/407

摘要： A system includes a plurality of inputs each configured to receive a filtered version of a source signal. The system extracts the energy information from each input signal and compares the energy information of a plurality of input signals. Alternatively, the system extracts energy information from a signal that is the difference of two input signals. Based on the energy information, the system determines at least one parameter that may be changed in at least one circuit in a plurality of circuits to minimize the differences in energy of the input signals or to minimize the energy of the difference signal. Parameters may include for example amplification, delay, and corner frequency values.The set of circuits may include microphone interface circuits. Merely by way of example, a system with microphone interface circuits may be included in a hearing enhancement device or in a hands-free earpiece.

摘要翻译： 系统包括多个输入，每个输入被配置为接收源信号的滤波版本。 该系统从每个输入信号中提取能量信息，并比较多个输入信号的能量信息。 或者，系统从作为两个输入信号的差的信号提取能量信息。 基于能量信息，系统确定可以在多个电路中的至少一个电路中改变的至少一个参数，以最小化输入信号的能量差异或最小化差分信号的能量。 参数可以包括例如放大，延迟和转角频率值。 该组电路可以包括麦克风接口电路。 仅举例来说，具有麦克风接口电路的系统可以包括在听力增强装置中或免提耳机中。