公开(公告)号：US09269350B2

公开(公告)日：2016-02-23

申请号：US13956313

申请日：2013-07-31

Applicant: Motorola Mobility LLC

Inventor： Adrian M Schuster ,  Plamen A Ivanov

IPC: H04R3/00 ,  G10L15/08 ,  G10L21/0272 ,  G10L21/0216

CPC classification number: G10L15/08 ,  G10L21/0272 ,  G10L2015/088 ,  G10L2021/02166

Abstract: A method includes obtaining a plurality of audio channels using a plurality of microphone outputs having at least one audio control channel and at least one audio output channel. When a keyword is detected on the audio control channel using voice recognition, adaptive filtering is performed to attenuate the keyword from the audio output channel. An apparatus operative to perform the method includes a plurality of microphones that provide a plurality of audio channels with at least one audio output channel and at least one audio control channel. Voice command recognition logic is operatively coupled to the plurality of microphones to receive the at least one audio control channel. The voice command recognition logic detect keywords on the audio control channel and filter logic with at least one adaptive filter performs adaptive filtering to attenuate the keyword from the at least one audio output channel.

Abstract translation: 一种方法包括使用具有至少一个音频控制信道和至少一个音频输出信道的多个麦克风输出来获得多个音频信道。 当使用语音识别在音频控制信道上检测到关键字时，执行自适应滤波以从音频输出信道衰减关键字。 可执行该方法的装置包括多个麦克风，其提供具有至少一个音频输出通道和至少一个音频控制通道的多个音频通道。 语音命令识别逻辑可操作地耦合到多个麦克风以接收至少一个音频控制信道。 语音命令识别逻辑检测音频控制信道上的关键字和具有至少一个自适应滤波器的滤波器逻辑，执行自适应滤波以衰减来自至少一个音频输出通道的关键字。

公开(公告)号：US20140270202A1

公开(公告)日：2014-09-18

申请号：US13955183

申请日：2013-07-31

Applicant: Motorola Mobility LLC

Inventor： Plamen A Ivanov ,  Kevin J Bastyr ,  Joel A Clark ,  Rivanaldo S Oliveira ,  Snehitha Singaraju ,  Jincheng Wu

IPC: H04R29/00 ,  G10L15/00

CPC classification number: H04R29/005 ,  G01N29/44 ,  G10K11/178 ,  G10L21/02 ,  H04M1/03 ,  H04M1/6041 ,  H04M2250/12 ,  H04R3/005 ,  H04R29/004 ,  H04R2430/20 ,  H04R2499/11

Abstract: A method includes detecting a surface in proximity to a mobile device using sensor data and determining an acoustic reflectivity or acoustic absorptivity of the surface using the sensor data. The method may further compensate for the acoustic reflectivity or acoustic absorptivity by controlling a configurable group of microphones of the mobile device. Compensating for the surface acoustic reflectivity or acoustic absorptivity may include beamforming the outputs of the configurable group of microphones to obtain one of an omnidirectional beamform pattern or a directional beamform pattern. An apparatus that performs the method include a configurable group of microphones, a signal conditioner, and a surface compensator. The surface compensator is operative to detect a surface in proximity to the apparatus and determine a surface acoustic reflectivity or acoustic absorptivity.

Abstract translation: 一种方法包括使用传感器数据检测靠近移动设备的表面，并使用传感器数据确定表面的声反射率或声吸收率。 该方法可以通过控制移动设备的可配置的麦克风组来进一步补偿声反射率或声吸收率。 对表面声反射率或声吸收率的补偿可以包括波束成形麦克风的可配置组的输出，以获得全向波束形图案或定向波束形图案之一。 执行该方法的装置包括可配置的麦克风组，信号调节器和表面补偿器。 表面补偿器可操作以检测靠近设备的表面，并确定表面声反射率或声吸收率。

公开(公告)号：US10067738B2

公开(公告)日：2018-09-04

申请号：US14992503

申请日：2016-01-11

Applicant: Motorola Mobility LLC

Inventor： Plamen A Ivanov ,  Kevin J Bastyr ,  Mark A Jasiuk ,  Seungyoon Lee ,  John Ross Meloney ,  Snehitha Singaraju

IPC: G06F3/16

Abstract: Systems and methods for controlling a portable electronic communication device use device operational context to provide user trigger or command input. When user input is received from a user of the device, a set of user input options is selected based on an operational context of the device, including an identification of at least one running application. Each user input option is associated with a device action, and the received user input is mapped to a matching user input option within the selected set of user input options. The device action associated with the matching user input option is then executed.

公开(公告)号：US09641935B1

公开(公告)日：2017-05-02

申请号：US14963913

申请日：2015-12-09

Applicant: Motorola Mobility LLC

Inventor： Plamen A Ivanov

IPC: H04R3/00 ,  H03G5/16

CPC classification number: H04R3/005 ,  H03G5/165 ,  H04R3/04 ,  H04R2499/11

Abstract: Configuring an adaptive microphone array to gather signals from a main lobe of the array, and configuring the array to reduce side interference gathered from sources that are not situated within the main lobe. A memory stores test signals gathered by the array in an anechoic chamber, a free-field environment, or other echo, interference and noise-minimized acoustic environment. Signals gathered in real time are processed to provide a preliminary output and preliminary weights. The test signals are retrieved from memory. The preliminary weights are applied to the test signals to provide equalizer weights. The equalizer weights and the preliminary output generate an equalized output that minimizes degradations resulting from side interference reduction.

公开(公告)号：US09628910B2

公开(公告)日：2017-04-18

申请号：US14800281

申请日：2015-07-15

Applicant: Motorola Mobility LLC

Inventor： Robert Zurek ,  Giles T Davis ,  Plamen A Ivanov

IPC: H04R3/00 ,  H04R3/02 ,  H04S7/00 ,  G10L25/78

CPC classification number: H04R3/02 ,  G10L25/78 ,  H03G3/32 ,  H04R2430/01 ,  H04R2499/11 ,  H04S7/30

Abstract: A method and apparatus to reduce acoustic feedback from a speaker to a microphone in a communication device. An audio signal can be reproduced by an apparatus. An audible signal of at least one near-end user can be voice activity detected at the apparatus. At least one audio output channel of multiple audio output channels can be operated on to attenuate acoustic pressure representative of the audio signal near at least one microphone aperture location when the audible signal of the at least one near-end user is detected at the apparatus.

公开(公告)号：US09479885B1

公开(公告)日：2016-10-25

申请号：US14962712

申请日：2015-12-08

Applicant: Motorola Mobility LLC

Inventor： Plamen A Ivanov ,  Joel Clark

IPC: H04B17/00 ,  H04R29/00 ,  H04M1/02 ,  H04R3/00

CPC classification number: H04R29/005 ,  H04R3/005 ,  H04R2430/21 ,  H04R2430/25

Abstract: Configuring an adaptive microphone array to gather signals from a main lobe of the array, and configuring the array to reduce side interference gathered from sources that are not situated within the main lobe. A memory stores test signals gathered by the array at a plurality of predetermined angular bearings with reference to the array in an anechoic chamber. Signals gathered in real time are processed to provide a preliminary output and preliminary weights. The test signals are retrieved from memory. The preliminary weights are applied to the test signals to provide null steering weights. The null steering weights and the preliminary output are processed to reduce or minimize the amplitude response of the array at the angular orientation.

Abstract translation: 配置自适应麦克风阵列以从阵列的主瓣收集信号，并配置阵列以减少从不在主波瓣内的源收集的侧向干扰。 存储器将阵列收集的测试信号存储在多个预定的角度轴承中，参考消声室中的阵列。 对实时收集的信号进行处理，提供初步输出和初步权重。 从存储器检索测试信号。 将初步重量应用于测试信号以提供无效的转向重量。 处理零转向重量和初步输出以减小或最小化阵列在角取向处的振幅响应。

公开(公告)号：US08908880B2

公开(公告)日：2014-12-09

申请号：US13626551

申请日：2012-09-25

Applicant: Motorola Mobility LLC

Inventor： Robert A Zurek ,  Kevin J Bastyr ,  Joel A Clark ,  Plamen A Ivanov

IPC: H04R3/00 ,  H04R1/02 ,  H04R9/06 ,  H04R1/40

CPC classification number: H04R1/406 ,  H04R2201/401 ,  H04R2430/01 ,  H04R2499/11

Abstract: An electronic apparatus is provided that has a rear-side and a front-side, a first microphone that generates a first signal, and a second microphone that generates a second signal. An automated balance controller generates a balancing signal based on a proximity sensor signal. A processor processes the first and second signals to generate at least one beamformed audio signal, where an audio level difference between a front-side gain and a rear-side gain of the beamformed audio signal is controlled during processing based on the balancing signal.

Abstract translation: 提供一种电子设备，其具有后侧和前侧，产生第一信号的第一麦克风和产生第二信号的第二麦克风。 自动平衡控制器基于接近传感器信号产生平衡信号。 A处理器处理第一和第二信号以产生至少一个波束形成的音频信号，其中基于平衡信号在处理期间控制波束形成的音频信号的前侧增益和后侧增益之间的音频电平差。