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61. 发明申请

US20170214997A1 DYNAMIC FREQUENCY-DEPENDENT SIDETONE GENERATION 有权
公开(公告)号：US20170214997A1
公开(公告)日：2017-07-27
申请号：US15005974
申请日：2016-01-25
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Roy Scott Kaller , Jon Hendrix , Anthony Shilton , Tom Harvey , Sam Waters
IPC分类号： H04R1/10 , G10L15/22 , H04R3/04
CPC分类号： H04R1/1041 , G10L15/22 , G10L2015/225 , H04M1/03 , H04M1/58 , H04M1/6008 , H04M2201/40 , H04M2201/41 , H04M2250/74 , H04R3/02 , H04R3/04 , H04R2410/05 , H04R2460/01 , H04R2460/05 , H04W88/02
摘要： The overall performance and power utilization of an audio device may be improved with an adaptive sidetone generation system that generates sidetones optimized for different application-specific problems. In particular, systems that include sidetone generation capabilities may be developed to include numerous microphones from which information may be received and processed to generate optimized sidetones. For example, the information from the microphones may be used to receive and/or determine the audio device's operating mode. The information from the microphones and the received and/or determined mode may then be used to generate a sidetone that is optimized for the particular mode and particular conditions in which the audio device is operating. Through the generation of optimized sidetones, the audio signal quality may be improved, thus reducing the amount of subsequent audio processing required, and resulting in improved performance and power utilization.

62. 发明授权

US09712659B2 Duplex audio for mobile communication device and accessory 有权
公开(公告)号：US09712659B2
公开(公告)日：2017-07-18
申请号：US15156041
申请日：2016-05-16
申请人： Apple Inc.
发明人： Jason J. Yew , Lawrence G. Bolton
IPC分类号： H04M1/725 , H04B3/20 , H04W4/12 , H04R3/02
CPC分类号： H04M1/72527 , H04B3/20 , H04M1/72558 , H04R3/02 , H04R2205/021 , H04R2499/11 , H04W4/12
摘要： Duplex audio is provided for a mobile communication device and an accessory. In some embodiments, the accessory can selectably operate in a duplex audio mode, concurrently sending audio to and receiving audio from the mobile communication device, or in another audio mode. In duplex audio mode, the accessory can enable its internal audio processing operations (e.g., echo cancellation) while the mobile communication device disables its corresponding internal operations or vice versa. The mobile communication device can control when the accessory transitions into and/or out of duplex audio mode.

63. 发明申请

US20170180895A1 FITTING A BILATERAL HEARING PROSTHESIS SYSTEM 审中-公开
公开(公告)号：US20170180895A1
公开(公告)日：2017-06-22
申请号：US15453370
申请日：2017-03-08
申请人： Mark C. Flynn , Martin Hillbratt Hillbratt
发明人： Mark C. Flynn , Martin Hillbratt Hillbratt
IPC分类号： H04R25/00
CPC分类号： H04R25/70 , H04R3/02 , H04R25/35 , H04R25/45 , H04R25/453 , H04R25/552 , H04R2460/13
摘要： A hearing prosthesis system includes a processor arranged to communicate a stimulation signal to a vibration stimulator of a first hearing prosthesis. The processor receives an indication of a measured input signal from a first transducer of a second hearing prosthesis. A processor calculates a feedback associated with the stimulation. The processor may also be further configured to adjust a gain table or an input to a feedback reduction algorithm in response to the calculated feedback. Additionally, the processor of the hearing prosthesis system may also be arranged to communicate a second stimulation signal to a vibration stimulator of the second hearing prosthesis. The processor receives an indication of a measured input signal from the first hearing prosthesis. Further, the processor calculates a second feedback associated with the second stimulation.

64. 发明授权

US09686607B1 Audio processing devices with port output circuits controlled by PC beep signal activity 有权
公开(公告)号：US09686607B1
公开(公告)日：2017-06-20
申请号：US13409776
申请日：2012-03-01
申请人： Qichang Wu , Daniel Bogard , Shun Qian
发明人： Qichang Wu , Daniel Bogard , Shun Qian
IPC分类号： G06F3/00 , H04R29/00 , H04R3/00 , H04R3/02
CPC分类号： H04R3/02 , H04R3/00 , H04R2400/00 , H04R2499/11
摘要： An audio processing integrated circuit chip, such as codec chip, includes at least one port output circuit configured to generate an audio signal to drive an external audio device and a PC beep circuit configured to receive a PC beep signal and to apply the received PC beep signal to an input of the at least one port output circuit. The chip further includes a control circuit configured to detect activity of the PC beep signal and to enable and/or disable the at least one port output circuit responsive to the detected activity.

65. 发明申请

US20170139669A1 APPARATUS AND METHOD FOR PROCESSING AUDIO SIGNAL 有权
公开(公告)号：US20170139669A1
公开(公告)日：2017-05-18
申请号：US15356530
申请日：2016-11-18
申请人： Gaudio Lab, Inc.
发明人： Hyunoh OH , Taegyu LEE , Jaesung CHOI , Yonghyun BAEK
IPC分类号： G06F3/16 , H04R3/12 , H04R29/00
CPC分类号： G06F3/165 , H04M1/6066 , H04R3/02 , H04R3/12 , H04R5/04 , H04R29/001
摘要： An embodiment of the present disclosure provides an audio signal processing device configured to transmit/receive an audio signal to/from an external acoustic output device that includes a microphone and an acoustic output means, including a transmission/reception module configured to transmit/receive a signal to/from the external acoustic output device, and a processor configured to control an operation of the transmission/reception module, wherein the processor transmits an audio output signal to the external acoustic output device through the transmission/reception module, receives, through the transmission/reception module, an input signal to which an external acoustic collected through the microphone is converted while the acoustic output means outputs an acoustic based on the audio output signal, and compares the audio output signal with the input signal to determine whether a user wears the acoustic output means of the external acoustic output device.

66. 发明授权

US09628910B2 Method and apparatus for reducing acoustic feedback from a speaker to a microphone in a communication device 有权
公开(公告)号：US09628910B2
公开(公告)日：2017-04-18
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： H04R3/00 , H04R3/02 , H04S7/00 , G10L25/78
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.

67. 发明授权

US09589575B1 Asynchronous clock frequency domain acoustic echo canceller 有权
标题翻译：异步时钟频域声学回声消除器
公开(公告)号：US09589575B1
公开(公告)日：2017-03-07
申请号：US14956992
申请日：2015-12-02
申请人： Amazon Technologies, Inc.
发明人： Robert Ayrapetian , Philip Ryan Hilmes
IPC分类号： G10L21/0232 , H04R3/02 , G06F17/14 , G10L21/0208
CPC分类号： H04R3/02 , G10L21/00 , G10L25/18 , G10L2021/02082 , H04R3/005 , H04R2420/07
摘要： An echo cancellation system that detects and compensates for differences in sample rates between the echo cancellation system and a set of wireless speakers based on a frequency-domain analysis. The system generates Fourier transforms for a microphone signal and a reference signal and determines a series of angles for individual frames. For each tone in the Fourier transforms, the system determines the angles and uses linear regression to determine an individual frequency offset associated with the tone. Using the individual frequency offsets associated with the tones, the system uses linear regression to determine an overall frequency offset between the audio sent to the speakers and the audio received from a microphone. Based on the overall frequency offset, samples of the audio are added or dropped when echo cancellation is performed, compensating for the frequency offset.
摘要翻译：一种回波消除系统，其基于频域分析来检测和补偿回波消除系统和一组无线扬声器之间采样率的差异。该系统产生用于麦克风信号和参考信号的傅里叶变换，并确定各个帧的一系列角度。对于傅里叶变换中的每个音调，系统确定角度并使用线性回归来确定与音调相关联的单个频率偏移。使用与音调相关联的各个频率偏移，系统使用线性回归来确定发送到扬声器的音频和从麦克风接收的音频之间的总频率偏移。基于总体频率偏移，当执行回波消除时，音频的样本被添加或丢弃，补偿频率偏移。

68. 发明申请

US20160373076A1 AVERAGE CURRENT-MODE FEEDBACK CONTROL OF MULTI-CHANNEL CLASS-D AUDIO AMPLIFIER 有权
标题翻译：多通道等级音频放大器的平均电流模式反馈控制
公开(公告)号：US20160373076A1
公开(公告)日：2016-12-22
申请号：US15185637
申请日：2016-06-17
申请人： Crestron Electronics, Inc.
发明人： Robert Buono
IPC分类号： H03F3/217 , H04R3/04 , H04R3/02 , H03F3/183 , H03F1/34
CPC分类号： H03F3/2173 , H03F1/34 , H03F3/183 , H03F3/68 , H03F2200/03 , H03F2200/351 , H04R3/02 , H04R3/04
摘要： Described herein are several configurations of Class-D audio amplifiers, including a single-ended and a bridge-tied load (BTL) configuration, in which voltage-mode control and average current-mode control circuitry in feedback loops can be included to control the outputs of the Class-D amplifier to reduce open-loop errors and maintain a relatively high loop gain over an expected audio frequency range. The average current-mode control circuitry monitors current through a resistor common to both a current flow into a positive terminal of a loudspeaker associated with the amplifier and a current flow into a negative terminal of the loudspeaker. The voltage-mode control circuitry works with the average current-mode control circuitry in controlling the output of the Class-D audio amplifier.
摘要翻译：这里描述了D类音频放大器的几种配置，包括单端和桥接负载（BTL）配置，其中可以包括反馈回路中的电压模式控制和平均电流模式控制电路以控制 D类放大器的输出，以减少开环误差，并在预期音频范围内保持较高的环路增益。平均电流模式控制电路通过与放大器相关联的扬声器的正极中的电流和流入扬声器的负极的电流的电流来监视电流。电压模式控制电路与平均电流模式控制电路一起工作，以控制D类音频放大器的输出。

69. 发明授权

US09525940B1 Multi-path analog front end and analog-to-digital converter for a signal processing system 有权
标题翻译：用于信号处理系统的多路径模拟前端和模数转换器
公开(公告)号：US09525940B1
公开(公告)日：2016-12-20
申请号：US14476507
申请日：2014-09-03
申请人： Cirrus Logic, Inc.
发明人： Edmund Mark Schneider , Aniruddha Satoskar , Daniel J. Allen , Seyedeh Maryam Mortazavi Zanjani
IPC分类号： H04B15/00 , H04R3/02 , H03M1/00 , H03M1/06 , H03M1/18 , H03M3/00
CPC分类号： H04R3/02 , H03M1/002 , H03M1/0631 , H03M1/18 , H03M1/181 , H03M1/188 , H03M3/466 , H04R3/04 , H04R2420/01 , H04R2430/03
摘要： In accordance with embodiments of the present disclosure, a processing system may include multiple selectable processing paths for processing an analog signal in order to reduce noise and increase dynamic range. Techniques are employed to transition between processing paths and calibrate operational parameters of the two paths in order to reduce or eliminate artifacts caused by switching between processing paths.
摘要翻译：根据本公开的实施例，处理系统可以包括用于处理模拟信号的多个可选择的处理路径，以便降低噪声并增加动态范围。采用技术来在处理路径之间转换并且校准两个路径的操作参数，以便减少或消除由处理路径之间的切换引起的伪影。

70. 发明授权

US09516410B1 Asynchronous clock frequency domain acoustic echo canceller 有权
标题翻译：异步时钟频域声学回声消除器
公开(公告)号：US09516410B1
公开(公告)日：2016-12-06
申请号：US14753332
申请日：2015-06-29
申请人： Amazon Technologies, Inc.
发明人： Robert Ayrapetian , Philip Ryan Hilmes
IPC分类号： H04B3/20 , H04R3/00
CPC分类号： H04R3/02 , H04R1/1008 , H04R1/1083 , H04R2420/07 , H04S3/00
摘要： An echo cancellation system that detects and compensations for differences in sample rates between the echo cancellation system and a set of wireless speakers based on a frequency-domain analysis of estimated impulse response coefficients. The system tracks the real and imaginary number components of the coefficients, and determines a “rotation” of the coefficients over time caused by a frequency offset between the audio sent to the speakers and the audio received from a microphone. Based on the rotation, samples of the audio are added or dropped when echo cancellation is performed, compensating for the frequency offset.
摘要翻译：一种回波消除系统，其基于估计的脉冲响应系数的频域分析来检测和补偿回波消除系统和一组无线扬声器之间的采样率差异。该系统跟踪系数的实数和虚数分量，并且确定由发送到扬声器的音频和从麦克风接收的音频之间的频率偏移引起的随时间的系数的“旋转”。基于旋转，当执行回波消除时，音频的样本被添加或丢弃，补偿频率偏移。

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