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1. 发明授权

US09883140B2 Using the location of a near-end user in a video stream to adjust audio settings of a far-end system 有权
公开(公告)号：US09883140B2
公开(公告)日：2018-01-30
申请号：US15311824
申请日：2014-09-26
申请人： Apple Inc.
发明人： Martin E. Johnson , Tom-Davy William Jendrik Saux , Ronald N. Isaac , Sylvain Choisel , Afrooz Family
IPC分类号： H04N7/15 , H04S7/00 , H04R3/12 , H04N7/14
CPC分类号： H04N7/15 , H04N7/141 , H04R3/12 , H04R27/00 , H04R2430/01 , H04S7/30 , H04S7/305 , H04S2400/13 , H04S2400/15
摘要： A video conferencing system is described that includes a near-end and a far-end system. The near-end system records both audio and video of one or more users proximate to the near-end system. This recorded audio and video is transmitted to the far-end system through the data connection. The video stream and/or one or more settings of the recording camera are analyzed to determine the amount of a video frame occupied by the recorded user(s). The video conferencing system may directly analyze the video frames themselves and/or a zoom setting of the recording camera to determine a ratio or percentage of the video frame occupied by the recorded user(s). By analyzing video frames associated with an audio stream, the video conferencing system may drive a speaker array of the far-end system to more accurately reproduce sound content based on the position of the recorded user in a video frame.

2. 发明授权

US09336557B2 Apparatus and methods for processing of media signals 有权
标题翻译：用于处理媒体信号的装置和方法
公开(公告)号：US09336557B2
公开(公告)日：2016-05-10
申请号：US13875215
申请日：2013-05-01
申请人： Apple Inc.
发明人： Brett D. George , Changki Min , David A. Leech , Matthew X. Mora , Niel D. Warren , Rajabali M. Koduri , Ronald N. Isaac
IPC分类号： G06F15/16 , G06T1/20
CPC分类号： G06T1/20 , G10K2210/3042
摘要： Methods and apparatus for processing media signals. In one embodiment, a data processing device processes fixed and variable rate data using a first and second processing unit. The processing comprises real-time processing of audio/video signals by a graphics processing unit (GPU) and/or central processing unit (CPU). The processing units process data efficiently by establishing one processor as always processing variable rate data, and using one or more schemes for determining processor will process fixed rate data. A shared memory enables the processors to communicate with one another in order to determine which will process the fixed rate data. In one scheme for determining which of the processors will process the fixed rate data the second processor need merely be unlocked. In another embodiment, the second processor must be unlocked and immediately available.
摘要翻译：用于处理媒体信号的方法和装置。在一个实施例中，数据处理设备使用第一和第二处理单元处理固定和可变速率数据。该处理包括由图形处理单元（GPU）和/或中央处理单元（CPU）对音频/视频信号的实时处理。处理单元通过一如既往处理可变速率数据建立一个处理器，并且使用一个或多个用于确定处理器的方案将处理固定速率数据来有效地处理数据。共享存储器使处理器能够彼此通信，以便确定哪个处理固定速率数据。在用于确定哪些处理器将处理固定速率数据的一种方案中，第二处理器仅需要解锁。在另一个实施例中，第二处理器必须被解锁并立即可用。

3. 发明授权

US10986461B2 Adjusting the beam pattern of a speaker array based on the location of one or more listeners 有权
公开(公告)号：US10986461B2
公开(公告)日：2021-04-20
申请号：US16030736
申请日：2018-07-09
申请人： Apple Inc.
发明人： Martin E. Johnson , Ronald N. Isaac , Afrooz Family
IPC分类号： H04R27/00 , H04S7/00 , H04R3/12 , H04R1/40 , H04R5/04 , H04S3/00
摘要： A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.

4. 发明申请

US20160029142A1 ADAPTIVE ROOM EQUALIZATION USING A SPEAKER AND A HANDHELD LISTENING DEVICE 有权
标题翻译：使用扬声器和手持听筒装置的自适应房间均衡
公开(公告)号：US20160029142A1
公开(公告)日：2016-01-28
申请号：US14775585
申请日：2014-03-13
申请人： APPLE INC.
发明人： Ronald N. Isaac
IPC分类号： H04S7/00
CPC分类号： H04S7/301 , H04S7/307 , H04S2400/01 , H04S2400/15 , H04S2420/07
摘要： A loudspeaker that measures the impulse response of a listening area is described. The loudspeaker may output sounds corresponding to a segment of an audio signal. The sounds are sensed by a listening device proximate to a listener and transmitted to the loudspeaker. The loudspeaker includes an adaptive filter that estimates the impulse response of the listening area based on the signal segment. An error unit analyzes the estimated impulse response together with the sensed audio signal received from the listening device to determine the accuracy of the estimate. New estimates may be generated by the adaptive filter until an accuracy level is achieved for the signal segment. A processor may utilize one or more estimated impulse responses corresponding to various signal segments that cover a defined frequency spectrum for adjusting the audio signal to compensate for the impulse response of the listening area. Other embodiments are also described.
摘要翻译：描述了测量收听区域的脉冲响应的扬声器。扬声器可以输出与音频信号的段对应的声音。声音由靠近收听者的聆听装置感测并被发送到扬声器。该扬声器包括一个自适应滤波器，该自适应滤波器基于信号段估计收听区域的脉冲响应。误差单元将所估计的脉冲响应与从听音装置接收到的感测音频信号一起分析，以确定估计的准确性。可以通过自适应滤波器生成新的估计，直到信号段达到精度水平为止。处理器可以利用对应于覆盖所定义的频谱的各种信号段的一个或多个估计的脉冲响应来调整音频信号以补偿收听区域的脉冲响应。还描述了其它实施例。

5. 发明申请

US20160021480A1 ROBUST CROSSTALK CANCELLATION USING A SPEAKER ARRAY 有权
标题翻译：使用扬声器阵列的稳定的CROSSTALK CANCELLATION
公开(公告)号：US20160021480A1
公开(公告)日：2016-01-21
申请号：US14773280
申请日：2014-03-13
申请人： APPLE INC.
发明人： Martin E. Johnson , Ronald N. Isaac
IPC分类号： H04S7/00 , H04R5/04 , H04S3/02 , H04R5/02
CPC分类号： H04S7/301 , H04R5/02 , H04R5/04 , H04R2203/12 , H04S3/02 , H04S7/303 , H04S2400/15 , H04S2420/01
摘要： An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.
摘要翻译：描述使用扬声器阵列执行串扰消除的音频接收器。音频接收器检测房间中的收听者的位置，并使用一个或多个波束图案矩阵处理要通过扬声器阵列输出的一段声音节目内容。根据一个或多个约束生成波束图案矩阵。约束可以包括增加右声道并减少收听者右耳的左声道，增加左声道并减少收听者左耳的右声道，并减少房间所有其他区域的声音。这些约束使得音频接收器主要向收听者发出声音，而不是在房间的其他区域中发出声音，使得由于对房间的频率响应的改变而以最小的效果来实现串扰消除。还描述了其它实施例。

6. 发明申请

US20130332159A1 USING FAN THROTTLING TO ENHANCE DICTATION ACCURACY 审中-公开
标题翻译：使用风扇加速提高精度
公开(公告)号：US20130332159A1
公开(公告)日：2013-12-12
申请号：US13737666
申请日：2013-01-09
申请人： APPLE INC.
发明人： Craig M. Federighi , John D. Field , Gary P. Geaves , Ronald N. Isaac , Aram M. Lindahl , Eric T. Seymour , Kim E. Silverman , Jeffrey D. Whitman
IPC分类号： G10L15/26
CPC分类号： G10L15/26 , G06F1/206
摘要： A dictation computer that includes a fan speed regulator is described. The fan speed regulator monitors a speech recognition unit to determine when the speech recognition unit is activated. Upon detection that the speech recognition unit is activated, the fan speed regulator ducks the speed of a cooling fan embedded within the dictation computer to an optimized speed of rotation over a delay time interval. The fan speed regulator may include components to adapt the optimized speed and delay time to the characteristics of the dictation computer and the user. Other embodiments are also described.
摘要翻译：描述了包括风扇速度调节器的听写计算机。风扇速度调节器监视语音识别单元以确定语音识别单元何时被激活。当检测到语音识别单元被激活时，风扇速度调节器将嵌入在听写计算机内的冷却风扇的速度降低到延迟时间间隔内的优化的旋转速度。风扇速度调节器可以包括用于使优化的速度和延迟时间适应听写计算机和用户的特征的组件。还描述了其它实施例。

7. 发明申请

US20210227345A1 ADJUSTING THE BEAM PATTERN OF A SPEAKER ARRAY BASED ON THE LOCATION OF ONE OR MORE LISTENERS 有权
公开(公告)号：US20210227345A1
公开(公告)日：2021-07-22
申请号：US17224033
申请日：2021-04-06
申请人： Apple Inc.
发明人： Martin E. Johnson , Ronald N. Isaac , Afrooz Family
IPC分类号： H04S7/00 , H04R3/12 , H04R1/40 , H04R5/04 , H04S3/00
摘要： A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.

8. 发明授权

US10021506B2 Adjusting the beam pattern of a speaker array based on the location of one or more listeners 有权
公开(公告)号：US10021506B2
公开(公告)日：2018-07-10
申请号：US14771475
申请日：2014-03-04
申请人： Apple Inc.
发明人： Martin E. Johnson , Ronald N. Isaac , Afrooz Family
IPC分类号： H04S7/00 , H04R3/12 , H04R1/40 , H04R5/04 , H04S3/00
CPC分类号： H04S7/305 , H04R1/403 , H04R3/12 , H04R5/04 , H04R2201/401 , H04R2201/403 , H04R2203/12 , H04S3/008 , H04S7/303 , H04S2400/01
摘要： A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.

9. 发明授权

US09756446B2 Robust crosstalk cancellation using a speaker array 有权
公开(公告)号：US09756446B2
公开(公告)日：2017-09-05
申请号：US14773280
申请日：2014-03-13
申请人： Apple Inc.
发明人： Martin E. Johnson , Ronald N. Isaac
IPC分类号： H04R5/02 , H04S7/00 , H04R5/04 , H04S3/02
CPC分类号： H04S7/301 , H04R5/02 , H04R5/04 , H04R2203/12 , H04S3/02 , H04S7/303 , H04S2400/15 , H04S2420/01
摘要： An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.

10. 发明授权

US09516409B1 Echo cancellation and control for microphone beam patterns 有权
标题翻译：麦克风波束模式的回波消除和控制
公开(公告)号：US09516409B1
公开(公告)日：2016-12-06
申请号：US14714023
申请日：2015-05-15
申请人： Apple Inc.
发明人： Sean A. Ramprashad , Martin E. Johnson , Vasu Iyengar , Ronald N. Isaac
IPC分类号： H04B3/20 , H04R3/00 , H04R1/08 , H04B3/23
CPC分类号： H04B3/23 , H04R1/403 , H04R1/406 , H04R3/02 , H04R2430/23
摘要： Systems and methods for controlling echo in audio communications between a near-end system and a far-end system are described. The system and method may intelligently assign a plurality of microphone beams to a limited number of echo cancellers for processing. The microphone beams may be classified based on generated statistics to determine beams of interest (e.g., beams with a high ratio of local-voice to echo). Based on this ranking/classification of microphone beams, beams of greater interest may be assigned to echo cancellers while less important beams may temporally remain unprocessed until these beams become of higher importance/interest. Accordingly, a limited number of echo cancellers may be used to intelligently process a larger number of microphone beams based on interest in the beams and properties of echo cancellation performed for each beam.
摘要翻译：描述了用于控制近端系统和远端系统之间的音频通信中回波的系统和方法。该系统和方法可智能地将多个麦克风束分配给有限数量的回波消除器进行处理。麦克风束可以基于生成的统计来分类，以确定感兴趣的波束（例如，具有高比例的本地话音到回波的波束）。基于麦克风束的这种排序/分类，可以将更感兴趣的波束分配给回波消除器，而不太重要的波束可以暂时保持未处理，直到这些波束变得更高的重要性/兴趣。因此，有限数量的回波消除器可以用于基于对光束的兴趣和针对每个光束执行的回波消除的特性来智能处理更大数量的麦克风束。

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