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1. 发明申请

US20140249810A1 SIGNAL NOISE ATTENUATION 有权
标题翻译：信号噪声衰减
公开(公告)号：US20140249810A1
公开(公告)日：2014-09-04
申请号：US14347685
申请日：2012-10-16
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Sriram Srinivasan
IPC分类号： G10L21/0208
CPC分类号： G10L21/0208 , G10L21/0216 , G10L2021/02085
摘要： A noise attenuation apparatus receives a first signal comprising a desired and a noise signal component. Two codebooks (109, 111) comprise respectively desired signal candidates and noise signal candidates representing possible desired and noise signal components respectively. A noise attenuator (105) generates estimated signal candidates by for each pair of desired and noise signal candidates generating an estimated signal candidate as a combination of the desired signal candidate and the noise signal candidate. A signal candidate is then determined from the estimated signal candidates and the first signal is noise compensated based on this signal candidate. A sensor signal representing a measurement of the desired source or the noise in the environment is used to reduce the number of candidates searched thereby substantially reducing complexity and computational resource usage. The noise attenuation may specifically be audio noise attenuation.
摘要翻译：噪声衰减装置接收包括期望和噪声信号分量的第一信号。两个码本（109,111）分别包括表示可能的期望信号和噪声信号分量的期望信号候选和噪声信号候选。噪声衰减器（105）通过对于产生作为所需信号候选和噪声信号候选的组合的估计信号候选的每对期望和噪声信号候选产生估计信号候选。然后根据估计的信号候选确定信号候选，并且基于该信号候选对第一信号进行噪声补偿。代表环境中期望的源或噪声的测量的传感器信号被用于减少所搜索的候选的数目，从而显着降低了复杂度和计算资源的使用。噪声衰减可能具体是音频噪声衰减。

2. 发明授权

US09773397B2 Method for detecting falls and a fall detection system 有权
公开(公告)号：US09773397B2
公开(公告)日：2017-09-26
申请号：US14914413
申请日：2014-08-08
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Warner Rudolph Theophile Ten Kate , Patrick Kechichian
IPC分类号： G08B23/00 , G08B21/04 , A61B5/11 , A61B5/00
CPC分类号： G08B21/0446 , A61B5/1117 , A61B5/681 , A61B5/746 , A61B2560/04 , A61B2562/0219 , A61B2562/0247 , A61B2562/0257 , G08B21/043 , G08B21/0492
摘要： There is provided a fall detection system comprising a user device configured to be worn or carried by a user, the user device comprising a proximity sensor for measuring the proximity of the user device to the ground or a floor; and a movement sensor for measuring the movements of the user; the fall detection system further comprising a processing unit configured to process the measurements from the movement sensor to detect a potential fall; activate the proximity sensor if a potential fall is detected; and process the measurements from the proximity sensor to determine if the user has fallen.

3. 发明授权

US09674368B2 Method and apparatus for audio processing 有权
公开(公告)号：US09674368B2
公开(公告)日：2017-06-06
申请号：US14765854
申请日：2014-03-18
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Cornelis Pieter Jansen
IPC分类号： H04M3/00 , H04M9/08
CPC分类号： H04M9/082 , H04M3/002
摘要： An audio apparatus including a circuit for applying a dynamic range adjustment processing to an input signal to generate an output signal for rendering by a loudspeaker. The dynamic range adjustment processing is dependent on a set of dynamic range adjustment parameters. A first linear echo-cancellation filter generates a first compensated signal from the input signal and a first adapter determines a set of filter parameters for the first linear echo-cancellation filter in response to the first compensated signal and a microphone signal. An audio circuit generates a second compensated signal by applying the dynamic range adjustment processing and a second echo-cancellation filter to the input signal where the second echo-cancellation filter corresponding to the first echo-cancellation filter. A second adapter determines the set of dynamic range adjustment parameters in response to the second compensated signal and the microphone signal.

4. 发明授权

US09659574B2 Signal noise attenuation 有权
公开(公告)号：US09659574B2
公开(公告)日：2017-05-23
申请号：US14347685
申请日：2012-10-16
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Sriram Srinivasan
IPC分类号： G10L21/00 , G10L21/0208 , G10L21/0216
CPC分类号： G10L21/0208 , G10L21/0216 , G10L2021/02085
摘要： A noise attenuation apparatus receives a first signal comprising a desired and a noise signal component. Two codebooks (109, 111) comprise respectively desired signal candidates and noise signal candidates representing possible desired and noise signal components respectively. A noise attenuator (105) generates estimated signal candidates by for each pair of desired and noise signal candidates generating an estimated signal candidate as a combination of the desired signal candidate and the noise signal candidate. A signal candidate is then determined from the estimated signal candidates and the first signal is noise compensated based on this signal candidate. A sensor signal representing a measurement of the desired source or the noise in the environment is used to reduce the number of candidates searched thereby substantially reducing complexity and computational resource usage. The noise attenuation may specifically be audio noise attenuation.

5. 发明授权

US09591422B2 Method and apparatus for audio interference estimation 有权
标题翻译：用于音频干扰估计的方法和装置
公开(公告)号：US09591422B2
公开(公告)日：2017-03-07
申请号：US14432606
申请日：2013-10-04
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian
IPC分类号： H04R29/00 , H04R3/02 , H04R3/04 , H04R3/00 , H04R27/00
CPC分类号： H04R29/004 , H04R3/002 , H04R3/02 , H04R3/04 , H04R27/00 , H04R2227/007 , H04R2227/009
摘要： An apparatus comprises a receiver (203) which receives a microphone signal from a microphone (201) where the microphone signal comprises a test signal component corresponding to an audio test signal. A divider (215) divides the microphone signal into a plurality of test interval signal components, each of which corresponds to the microphone signal in a time interval. A set processor (217) generates sets of test interval signal components and a similarity processor (219) generates a similarity value for each set. An interference estimator (221) determines an interference measure for individual test interval signal components in response to the similarity values. The interference measure may be used to select signal segments that can be used to adapt an audio processing algorithm which is applied to the microphone signal, such as e.g. speech enhancement or echo cancellation. The approach may allow for a reliable interference estimate to be generated while maintaining low complexity.
摘要翻译：一种装置包括接收来自麦克风（201）的麦克风信号的接收器（203），其中麦克风信号包括对应于音频测试信号的测试信号分量。分频器（215）将麦克风信号分成多个测试间隔信号分量，每个测试间隔信号分量在时间间隔内对应于麦克风信号。设置处理器（217）生成测试间隔信号分量集合，并且相似度处理器（219）为每个集合生成相似性值。干扰估计器（221）响应于相似度值确定各个测试间隔信号分量的干扰测量。干扰测量可以用于选择可以用于适应应用于麦克风信号的音频处理算法的信号段，例如，语音增强或回声消除。该方法可以允许在保持低复杂度的同时产生可靠的干扰估计。

6. 发明公开

US20240244391A1 Audio Apparatus and Method Therefor 审中-公开
公开(公告)号：US20240244391A1
公开(公告)日：2024-07-18
申请号：US18285900
申请日：2022-03-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Jeroen Gerardus Henricus Koppens , Sam Martin Jelfs , Patrick Kechichian
IPC分类号： H04S7/00
CPC分类号： H04S7/306 , H04S7/302 , H04S2400/05 , H04S2420/01
摘要： An audio apparatus for generating a flutter echo audio signal comprises a receiver (401) arranged to receive room metadata indicative of properties of a room. The room metadata may e.g. indicate dimensions of the room and/or acoustic reflection data for boundaries of the room. An estimator (405) determines a flutter echo estimate for the room in response to the room metadata where the flutter echo estimate is indicative of a level of a flutter echo in the room. A signal generator (403) includes a feedback delay network comprising a plurality of feedback loops. The signal generator (403) is arranged to generate the flutter echo audio signal from output signals of a set of feedback loops of the plurality of feedback loops being fed an audio source signal. An adapter (407) adapts a first parameter for a first feedback loop of the set of feedback loops in response to the flutter echo estimate.

7. 发明授权

US10771894B2 Method and apparatus for audio capture using beamforming 有权
公开(公告)号：US10771894B2
公开(公告)日：2020-09-08
申请号：US16473370
申请日：2017-12-28
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Cornelis Pieter Janse , Brian Brand Antonius Johannes Bloemendal , Patrick Kechichian , Rik Jozef Martinus Janssen
IPC分类号： H04R3/00 , H04R1/40
摘要： An apparatus for capturing audio comprises a first beamformer (305) coupled to a microphone array (301) and arranged to generate a first beamformed audio output. A plurality of constrained beamformers (309, 311) each generates a constrained beamformed audio output. A first adapter (307) adapts beamform parameters of the first beamformer (305) and a second adapter (313) adapts constrained beamform parameters for the plurality of constrained beamformers (309, 311). A difference processor (317) determines a difference measure for the constrained beamformers (309, 311) where the difference measure is indicative of the difference between beams formed by the first beamformer (305) and the constrained beamformers (309, 311). The second adapter (313) is arranged to adapt constrained beamform parameters with the constraint that beamform parameters are adapted only for constrained beamformers of the plurality of constrained beamformers (309, 311) for which a difference measure has been determined that meets a similarity criterion.

8. 发明授权

US09800734B2 Echo cancellation 有权
公开(公告)号：US09800734B2
公开(公告)日：2017-10-24
申请号：US15036963
申请日：2014-11-05
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Cornelis Pieter Janse
IPC分类号： H04M9/08 , G10K11/175
CPC分类号： H04M9/085 , G10K11/175
摘要： An audio echo suppressor includes a first receiver for receiving a first audio signal for rendering by a loud-speaker and a second receiver for receiving a microphone signal. A linear echo-cancellation filter generates a first compensation signal from the first audio signal and a compensator generates a residual signal by compensating the microphone signal for the first compensation signal. A first adapter determines filter parameters for the linear echo-cancellation filter. An estimator generates distortion measures where each distortion measure is indicative of the contribution to the residual signal in a frequency interval outside a first frequency interval. The residual signal results from rendering of signal components of the first audio signal that are within the first frequency interval. An echo reducer performs echo suppression based on the distortion measures.

9. 发明授权

US09351071B2 Audio source position estimation 有权
标题翻译：音源位置估计
公开(公告)号：US09351071B2
公开(公告)日：2016-05-24
申请号：US14372073
申请日：2013-01-08
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Okke Ouweltjes
IPC分类号： H04R3/00 , G01S3/808 , G10K11/20 , H04R1/08 , H04R1/34 , H04R1/40
CPC分类号： H04R3/005 , G01S3/8083 , G10K11/20 , H04R1/08 , H04R1/34 , H04R1/406 , H04R2430/20
摘要： An apparatus for determining a position estimate for an audio source comprises two microphones (M1, M2) and an acoustic element (203) providing an acoustic effect to sound from sound source positions to the first microphone (M1). The acoustic effect is asymmetric with respect to an axis (201) between the microphones (M1, M2). A position circuit (305) estimates two possible positions on different sides of the axis for the sound source in response to time of arrivals at the microphones (M1, M2). An estimator (307) determines an acoustic effect measure being indicative of a degree to which an acoustic effect of the first microphone signal matches an expected characteristic of the acoustic effect for sound sources on one side of the axis (201). Another circuit (309) determines the position estimate by selecting between the two possible positions in response to the acoustic effect measure. The approach may resolve ambiguities in position determination associated with position determination based on time of arrival at two microphones.
摘要翻译：一种用于确定音频源的位置估计的装置包括两个麦克风（M1，M2）和一个声音元件（203），其提供从声源位置到第一麦克风（M1）的声音的声学效果。声效应相对于麦克风（M1，M2）之间的轴线（201）是不对称的。位置电路（305）响应于在麦克风（M1，M2）处的到达时间估计声源的轴的不同侧上的两个可能位置。估计器（307）确定表示第一麦克风信号的声学效果与轴的一侧上的声源的声效的预期特性的程度相关联的声效效应测量（201）。另一电路（309）通过响应于声效测量在两个可能位置之间进行选择来确定位置估计。该方法可以基于到达两个麦克风的时间来解决与位置确定相关联的位置确定中的歧义。

10. 发明授权

US11630120B2 System and method for detecting wrist-device wearing location 有权
公开(公告)号：US11630120B2
公开(公告)日：2023-04-18
申请号：US17197244
申请日：2021-03-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Patrick Kechichian , Warner Rudolph Theophile Ten Kate
IPC分类号： G01P15/08 , G01P1/00 , G01P13/00
摘要： In one embodiment, an apparatus (12) that samples a signal obtained or derived from an accelerometer, filters the samples, accumulates the filtered samples, and determines which limb the apparatus is associated with based on a comparison of the filtered accumulated samples and a threshold set.

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