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1. 发明授权

US10339954B2 Echo cancellation and suppression in electronic device 有权
公开(公告)号：US10339954B2
公开(公告)日：2019-07-02
申请号：US16208451
申请日：2018-12-03
申请人： MOTOROLA MOBILITY LLC
发明人： Pratik M. Kamdar , Jincheng Wu , Joel A. Clark , Malay Gupta , Plamen A. Ivanov
IPC分类号： H04R3/00 , G10L21/00 , G10L21/0232 , G10L21/0272 , G10L25/84 , G10L25/21 , G10L21/0316 , G10L21/0208
摘要： A method includes obtaining, by a processor, an audio echo signal and an audio desired signal from an acoustic echo correction stage of an electronic device, and converting the echo signal and the desired signal to the frequency domain. The method further includes grouping, by the processor, frequency bin results of respective frequency domain converted echo and desired signals into respective echo and desired sub-bands. A sub-band suppressor gain is estimated based on an estimated sub-band energy for the echo and desired sub-bands. The method further includes modulating the frequency domain converted desired signal to compensate for residual echo, the modulating based, at least in part, on the estimated sub-band suppressor gain, and the modulating producing a compensated frequency domain converted echo signal. The method also includes converting the compensated frequency domain converted desired signal into time domain converted audio output signal.

2. 发明授权

US09680983B1 Privacy mode detection and response over voice activated interface 有权
公开(公告)号：US09680983B1
公开(公告)日：2017-06-13
申请号：US15184684
申请日：2016-06-16
申请人： Motorola Mobility LLC
发明人： Adrian M. Schuster , Rajib Acharya , Roger W. Ady , Plamen A. Ivanov , Mark A. Jasiuk , Dusan Macho Cierna , Robert Zurek
IPC分类号： H04M1/00 , H04M1/725 , G06K9/00 , G06F3/16 , G10L17/22 , G01S11/02 , H04W88/02
CPC分类号： H04M1/72569 , G06F3/017 , G06F3/165 , G06K9/00302 , G10L25/24 , G10L25/93 , H04M1/605 , H04M2203/251 , H04M2203/609 , H04M2250/12 , H04M2250/52 , H04M2250/74
摘要： A portable electronic communication device includes a user input receiver, one or more user outputs, and a processor programmed to receive user input from the user input receiver and to determine based on the user input whether the user desires the device to enter a private mode. The device alters communications from the device via the one or more user outputs while in the private mode, and enters the private mode if the user input indicates that the user desires the device to enter the private mode. While in the private mode, the device may alter the manner in which it communicates to the user.

3. 发明申请

US20130021503A1 Electronic Apparatus Having Microphones with Controllable Front-Side Gain and Rear-Side Gain 有权
标题翻译：具有可控的前侧增益和后侧增益的麦克风的电子设备
公开(公告)号：US20130021503A1
公开(公告)日：2013-01-24
申请号：US13626551
申请日：2012-09-25
申请人： Motorola Mobility LLC
发明人： Robert A. Zurek , Kevin J. Bastyr , Joel A. Clark , Plamen A. Ivanov
IPC分类号： H04R3/00 , H04N5/232 , H04N5/225
CPC分类号： H04R1/406 , H04R2201/401 , H04R2430/01 , H04R2499/11
摘要： 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.
摘要翻译：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。

4. 发明申请

US20170019734A1 METHOD AND APPARATUS FOR REDUCING ACOUSTIC FEEDBACK FROM A SPEAKER TO A MICROPHONE IN A COMMUNICATION DEVICE 有权
标题翻译：用于将来自扬声器的声音反馈减少到通信设备中的麦克风的方法和装置
公开(公告)号：US20170019734A1
公开(公告)日：2017-01-19
申请号：US14800281
申请日：2015-07-15
申请人： Motorola Mobility LLC
发明人： Robert Zurek , Giles T. Davis , Plamen A. Ivanov
IPC分类号： H04R3/02 , G10L25/78 , H04S7/00
CPC分类号： H04R3/02 , G10L25/78 , H03G3/32 , H04R2430/01 , H04R2499/11 , H04S7/30
摘要： 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.
摘要翻译：一种在通信设备中减少从扬声器到麦克风的声反馈的方法和装置。音频信号可由装置再现。至少一个近端用户的可听信号可以是在该装置处检测到的语音活动。当在设备处检测到至少一个近端用户的可听信号时，多个音频输出通道的至少一个音频输出通道可以被操作以衰减代表在至少一个麦克风孔径位置附近的音频信号的声压。

5. 发明申请

US20140278415A1 Voice Recognition Configuration Selector and Method of Operation Therefor 审中-公开
标题翻译：语音识别配置选择器及其操作方法
公开(公告)号：US20140278415A1
公开(公告)日：2014-09-18
申请号：US13955187
申请日：2013-07-31
申请人： Motorola Mobility LLC
发明人： Plamen A. Ivanov , Joel A. Clark
IPC分类号： G10L15/06
CPC分类号： G10L15/063 , G10L15/20 , G10L15/22 , G10L15/30 , G10L2015/228
摘要： A method includes obtaining a speech sample from a pre-processing front-end of a first device, identifying at least one condition, and selecting a voice recognition speech model from a database of speech models, the selected voice recognition speech model trained under the at least one condition. The method may include performing voice recognition on the speech sample using the selected speech model. A device includes a microphone signal pre-processing front end and operating-environment logic, operatively coupled to the pre-processing front end. The operating-environment logic is operative to identify at least one condition. A voice recognition configuration selector is operatively coupled to the operating-environment logic, and is operative to receive information related to the at least one condition from the operating-environment logic and to provide voice recognition logic with an identifier for a voice recognition speech model trained under the at least one condition.
摘要翻译：一种方法包括从第一设备的预处理前端获得语音样本，识别至少一种情况，以及从语音模型数据库中选择语音识别语音模型，所选择的语音识别语音模型在at 至少一个条件。该方法可以包括使用所选择的语音模型对语音样本执行语音识别。设备包括可操作地耦合到预处理前端的麦克风信号预处理前端和操作环境逻辑。操作环境逻辑用于识别至少一个条件。语音识别配置选择器可操作地耦合到操作环境逻辑，并且可操作以从操作环境逻辑接收与至少一个条件相关的信息，并且为语音识别逻辑提供用于已经训练的语音识别语音模型的标识符在至少一个条件下。

6. 发明申请

US20170164102A1 REDUCING MULTIPLE SOURCES OF SIDE INTERFERENCE WITH ADAPTIVE MICROPHONE ARRAYS 审中-公开
公开(公告)号：US20170164102A1
公开(公告)日：2017-06-08
申请号：US14962045
申请日：2015-12-08
申请人： Motorola Mobility LLC
发明人： Plamen A. Ivanov
IPC分类号： H04R1/40 , H04R3/00
CPC分类号： H04R1/406 , H04R3/005 , H04R2430/21 , H04R2430/25
摘要： Configuring microphones in an array to gather signals from a desired source of sound in a main lobe, and configuring the microphones to gather side interference by controlling at least one of a relative phase or a relative magnitude of signals gathered by each of the microphones to provide a respective plurality of differential microphone arrays each having a corresponding directional pattern that orients a null towards the desired source of sound and that provides a side lobe. The gathered side interference from the plurality of differential microphone arrays is processed to generate a reference signal that is subtracted from the signals that are gathered from the main lobe to provide an output signal wherein the side interference is reduced or cancelled.

7. 发明申请

US20140278394A1 Apparatus and Method for Beamforming to Obtain Voice and Noise Signals 审中-公开
标题翻译：波束形成获取语音和噪声信号的装置和方法
公开(公告)号：US20140278394A1
公开(公告)日：2014-09-18
申请号：US13955723
申请日：2013-07-31
申请人： Motorola Mobility LLC
发明人： Kevin John Bastyr , Giles T. Davis , Plamen A. Ivanov , Rivanaldo S. Oliveira , Tenkasi V. Ramabadran , Snehitha Singaraju
IPC分类号： G10L21/0208 , G10L15/20 , H04R3/00
CPC分类号： G10L21/0208 , G10L15/01 , G10L15/20 , G10L25/78 , G10L2021/02165 , G10L2021/02166 , H04R3/005
摘要： One method of operation includes beamforming a plurality of microphone outputs to obtain a plurality of virtual microphone audio channels. Each virtual microphone audio channel corresponds to a beamform. The virtual microphone audio channels include at least one voice channel and at least one noise channel. The method includes performing voice activity detection on the at least one voice channel and adjusting a corresponding voice beamform until voice activity detection indicates that voice is present on the at least one voice channel. Another method beamforms the plurality of microphone outputs to obtain a plurality of virtual microphone audio channels, where each virtual microphone audio channel corresponds to a beamform, and with at least one voice channel and at least one noise channel. The method performs voice recognition on the at least one voice channel and adjusts the corresponding voice beamform to improve a voice recognition confidence metric.
摘要翻译：一种操作方法包括波束成形多个麦克风输出以获得多个虚拟麦克风音频通道。每个虚拟麦克风音频通道对应于波束形式。虚拟麦克风音频通道包括至少一个语音通道和至少一个噪声通道。该方法包括在至少一个语音信道上执行语音活动检测，并调整对应的语音波束形式，直到语音活动检测指示话音存在于至少一个话音信道上。另一种方法波束形成多个麦克风输出以获得多个虚拟麦克风音频通道，其中每个虚拟麦克风音频通道对应于波束形式，并且具有至少一个语音通道和至少一个噪声通道。该方法在至少一个语音信道上执行语音识别并调整相应的语音波束形式以改善语音识别置信量度。

8. 发明申请

US20140278393A1 Apparatus and Method for Power Efficient Signal Conditioning for a Voice Recognition System 审中-公开
标题翻译：用于语音识别系统的高效信号调理的装置和方法
公开(公告)号：US20140278393A1
公开(公告)日：2014-09-18
申请号：US13955186
申请日：2013-07-31
申请人： Motorola Mobility LLC
发明人： Plamen A. Ivanov , Kevin J. Bastry , Joel A. Clark , Mark A. Jasiuk , Tenkasi V. Ramabadran , Jincheng Wu
IPC分类号： G10L15/20
CPC分类号： G10L15/20 , G10L15/28 , G10L21/0202 , G10L21/0216 , G10L21/0364 , G10L25/21 , G10L2021/02161
摘要： A disclosed method includes monitoring an audio signal energy level while having a plurality of signal processing components deactivated and activating at least one signal processing component in response to a detected change in the audio signal energy level. The method may include activating and running a voice activity detector on the audio signal in response to the detected change where the voice activity detector is the at least one signal processing component. The method may further include activating and running the noise suppressor only if a noise estimator determines that noise suppression is required. The method may activate and runs a noise type classifier to determine the noise type based on information received from the noise estimator and may select a noise suppressor algorithm, from a group of available noise suppressor algorithms, where the selected noise suppressor algorithm is the most power consumption efficient.
摘要翻译：所公开的方法包括：监测音频信号能级，同时响应于检测到的音频信号能量级的变化，使多个信号处理组件被去激活并激活至少一个信号处理组件。该方法可以包括响应于检测到的改变而激活和运行音频信号上的语音活动检测器，其中语音活动检测器是至少一个信号处理组件。该方法还可以包括仅当噪声估计器确定需要噪声抑制时激活和运行噪声抑制器。该方法可以激活和运行噪声类型分类器，以基于从噪声估计器接收的信息来确定噪声类型，并且可以从一组可用的噪声抑制器算法中选择噪声抑制算法，其中所选择的噪声抑制器算法是最大功率消费高效。

9. 发明授权

US09883023B2 Privacy mode detection and response over voice activated interface 有权
公开(公告)号：US09883023B2
公开(公告)日：2018-01-30
申请号：US15493900
申请日：2017-04-21
申请人： Motorola Mobility LLC
发明人： Adrian M. Schuster , Rajib Acharya , Roger W. Ady , Plamen A. Ivanov , Mark A. Jasiuk , Dusan Macho Cierna , Robert Zurek
IPC分类号： H04B1/38 , H04M1/725 , H04M1/60 , G10L25/24 , G06F3/01
CPC分类号： H04M1/72569 , G06F3/017 , G06F3/165 , G06K9/00302 , G10L25/24 , G10L25/93 , H04M1/605 , H04M2203/251 , H04M2203/609 , H04M2250/12 , H04M2250/52 , H04M2250/74
摘要： A portable electronic communication device includes a user input receiver, one or more user outputs, and a processor programmed to receive user input from the user input receiver and to determine based on the user input whether the user desires the device to enter a private mode. The device alters communications from the device via the one or more user outputs while in the private mode, and enters the private mode if the user input indicates that the user desires the device to enter the private mode. While in the private mode, the device may alter the manner in which it communicates to the user.

10. 发明申请

US20170199721A1 DEVICE CONTROL BASED ON ITS OPERATIONAL CONTEXT 审中-公开
公开(公告)号：US20170199721A1
公开(公告)日：2017-07-13
申请号：US14992503
申请日：2016-01-11
申请人： Motorola Mobility LLC
发明人： Plamen A. Ivanov , Kevin J. Bastyr , Mark A. Jasiuk , Seungyoon Lee , John Ross Meloney , Snehitha Singaraju
IPC分类号： G06F3/16 , G06F3/01
CPC分类号： G06F3/167
摘要： 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.

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