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31. 发明公开

US20230186892A1 Managing Characteristics of Active Noise Reduction 审中-公开
公开(公告)号：US20230186892A1
公开(公告)日：2023-06-15
申请号：US18165468
申请日：2023-02-07
申请人： Bose Corporation
发明人： John Rule
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/17873 , H04R1/1083 , G10K11/17823 , G10K2210/3056 , G10K2210/3028 , G10K2210/3026
摘要： A first input signal captured by one or more sensors associated with an ANR headphone is received. A frequency domain representation of the first input signal is computed for a set of discrete frequencies, based on which a set of parameters is generated for a digital filter disposed in an ANR signal flow path of the ANR headphone, the set of parameters being such that a loop gain of the ANR signal flow path substantially matches a target loop gain. Generating the set of parameters comprises: adjusting a response of the digital filter at frequencies (e.g., spanning between 200 Hz-5 kHz). A response of at least 3 second order sections of the digital filter is adjusted. A second input signal in the ANR signal flow path is processed using the generated set of parameters to generate an output signal for driving the electroacoustic transducer of the ANR headphone.

32. 发明公开

US20230169948A1 SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING PROGRAM, AND SIGNAL PROCESSING METHOD 审中-公开
公开(公告)号：US20230169948A1
公开(公告)日：2023-06-01
申请号：US17997630
申请日：2021-04-28
申请人： SONY GROUP CORPORATION
发明人： YUSHI YAMABE
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/17823 , G10K11/17825 , G10K11/17881 , H04R1/1083 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3044 , G10K2210/3055 , G10K2210/3056 , H04R2460/01
摘要： A signal processing device according to an embodiment includes: two or more microphones each provided with a sound collection unit directed to an outside of a housing including a driver unit, a control unit (102b) that performs a hearing control of sound output from the driver unit to a listener based on sound signals collected and output by the two or more microphones, and an adjustment unit (200) that adjusts a degree of the hearing control between a degree for wind and a degree for non-wind based on a correlation between the sound signals.

33. 发明申请

US20190103087A1 SYSTEM FOR SPECTRAL SHAPING OF VEHICLE NOISE CANCELLATION 审中-公开
公开(公告)号：US20190103087A1
公开(公告)日：2019-04-04
申请号：US15722475
申请日：2017-10-02
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Frank C. VALERI , Christopher A. STIRLEN , Timothy J. ROGGENKAMP
IPC分类号： G10K11/00 , G10K11/178 , H04R3/00
CPC分类号： G10K11/1785 , B60R16/037 , G10K2210/12821 , G10K2210/3056 , G10K2210/51 , G10K2210/511
摘要： The present disclosure is directed to a system and a method for spectral shaping of vehicle noise cancellation. In an example implementation, the method includes determining a center frequency of an expected tonal peak within a selected noise band based upon vehicle data, generating a noise cancellation signal using a weighted shaping filter to shape the noise band, and outputting the noise cancellation signal to smooth the expected tonal peak.

34. 发明申请

US20190088245A1 Parallel Active Noise Reduction (ANR) and Hear-Through Signal Flow Paths in Acoustic Devices 审中-公开
公开(公告)号：US20190088245A1
公开(公告)日：2019-03-21
申请号：US16115880
申请日：2018-08-29
申请人： Bose Corporation
发明人： Ryan terMeulen , John Allen Rule , Dale McElhone
IPC分类号： G10K11/178 , H04R3/00 , H04R1/10
CPC分类号： G10K11/178 , G10K11/17837 , G10K11/17853 , G10K11/17885 , G10K2210/1081 , G10K2210/3056 , H04R1/1016 , H04R1/1041 , H04R1/1083 , H04R3/005 , H04R2460/01
摘要： Technology described in this document can be embodied in a method that includes receiving an input signal captured by one or more sensors associated with an active noise reduction (ANR) device, processing the input signal using a first filter disposed in an ANR signal flow path to generate a first signal for an acoustic transducer of the ANR device, and processing the input signal in a pass-through signal flow path disposed in parallel with the ANR signal flow path to generate a second signal for the acoustic transducer. The pass-through signal flow path is configured to allow at least a portion of the input signal to pass through to the acoustic transducer in accordance with a variable gain associated with the pass-through signal flow path. The method also includes generating an output signal for the acoustic transducer based on combining the first signal with the second signal.

35. 发明申请

US20190035381A1 CONTEXT-BASED CANCELLATION AND AMPLIFICATION OF ACOUSTICAL SIGNALS IN ACOUSTICAL ENVIRONMENTS 审中-公开
公开(公告)号：US20190035381A1
公开(公告)日：2019-01-31
申请号：US15855169
申请日：2017-12-27
申请人： Intel Corporation
发明人： Przemyslaw Maziewski , Da-Ming Chiang , Shmuel Markovich Golan , Swarnendu Kar , Victoria Moore
IPC分类号： G10K11/178 , H04R29/00 , G10L25/51
CPC分类号： G10K11/17827 , G10K2210/3056 , G10L21/0316 , G10L25/21 , G10L25/51 , H04R29/001 , H04R2227/001 , H04R2430/01 , H04R2460/01
摘要： A mechanism is described for facilitating context-based cancellation and amplification of acoustical signals in acoustical environments according to one embodiment. An apparatus of embodiments, as described herein, includes detection and recognition logic to detect an acoustical signal being emitted by an acoustical signal source; evaluation, estimation, and footprint logic to classify the acoustical signal as an emergency acoustical signal or a non-emergency acoustical signal, wherein the classification is based on a footprint or a footprint identification (ID) associated with the acoustical signal; acoustical signal cancellation logic to cancel the acoustical signal if the acoustical signal is regarded as the non-emergency acoustical signal based on the footprint or the footprint ID; and acoustical signal amplification logic to amplify the acoustical signal if the acoustical signal is classified as the emergency acoustical signal based on the footprint or the footprint ID.

36. 发明申请

US20190019491A1 CALIBRATION AND STABILIZATION OF AN ACTIVE NOISE CANCELATION SYSTEM 审中-公开
公开(公告)号：US20190019491A1
公开(公告)日：2019-01-17
申请号：US16101192
申请日：2018-08-10
申请人： Avnera Corporation
发明人： Amit Kumar , Thomas Irrgang , Shankar Rathoud , Eric Sorensen
IPC分类号： G10K11/178 , H04R29/00 , H04R1/10
CPC分类号： G10K11/178 , G10K11/17813 , G10K11/17881 , G10K2210/1081 , G10K2210/3025 , G10K2210/3026 , G10K2210/3027 , G10K2210/3045 , G10K2210/3055 , G10K2210/3056 , G10K2210/3214 , G10K2210/504 , H04R1/1083 , H04R29/00 , H04R2460/01
摘要： A fixture for calibrating an active noise canceling (ANC) earphone, the calibration fixture including an ear model and an acoustic path. The ear model is configured to support an ANC earphone and includes an ear canal extending from an outer end of the ear canal to an inner end of the ear canal. The acoustic path is external to the ear canal and extends from, at a first end of the acoustic path, the inner end of the ear canal of the ear model to an opposite, second end of the acoustic path. The acoustic path is configured to transmit a mechanical sound wave received from the inner end of the ear canal to a region external to the ear model and adjacent the outer end of the ear canal.

37. 发明授权

US09923550B2 Estimating secondary path phase in active noise control 有权
公开(公告)号：US09923550B2
公开(公告)日：2018-03-20
申请号：US14855961
申请日：2015-09-16
申请人： Bose Corporation
发明人： Paraskevas Argyropoulos , Emery M. Ku
IPC分类号： G06F17/10 , H03H21/00 , G10K11/178
CPC分类号： H03H21/0012 , G10K11/178 , G10K2210/1282 , G10K2210/30232 , G10K2210/3044 , G10K2210/3056
摘要： The technology described in this document can be embodied in a computer-implemented method that includes receiving, by one or more processing devices, a first plurality of values representing a set of coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes accessing one or more estimates of instantaneous phase values associated with a transfer function representing an effect of a secondary path of the active noise cancellation system, and updating the first plurality of values based on the one or more estimates of the instantaneous phase values to generate a set of updated coefficients for the adaptive filter. The method further includes programming the adaptive filter with the set of updated coefficients to affect operation of the adaptive filter.

38. 发明申请

US20180005623A1 Voice Enhancing Device with Audio Focusing Function 审中-公开
公开(公告)号：US20180005623A1
公开(公告)日：2018-01-04
申请号：US15640764
申请日：2017-07-03
申请人： EM-TECH. Co., Ltd.
发明人： Choong Sheek Hong , Dong Sung Kim
IPC分类号： G10K11/178 , H04R3/00 , H04R1/40 , H04R1/10 , H04R1/04
CPC分类号： H04R3/005 , G10K11/17857 , G10K11/17885 , G10K2210/1081 , G10K2210/111 , G10K2210/3046 , G10K2210/3056 , G10K2210/3219 , H04R1/028 , H04R1/04 , H04R1/1016 , H04R1/1041 , H04R1/406 , H04R5/0335 , H04R2420/07 , H04R2460/01
摘要： A voice enhancing device with an audio focusing function is disclosed. The voice enhancing device has an audio focusing function capable of selectively enhancing voice depending on a speaking person's location. The voice enhancing device, which is wearable on a human body, includes: left and right earphones configured to fit into left and right ears of a wearer of the voice enhancing device, respectively; two or more microphones configured to acquire a sound; and a processing part configured to at least perform signal processing tasks for active noise cancellation on sound signals from the microphones and output processed sound signals to the earphones. The processing part is configured to perform the signal processing tasks to amplify only sound signals picked up from an interested direction and to attenuate sound signals picked up from other directions.

39. 发明申请

US20170294180A1 ACTIVE NOISE CONTROL DEVICE 审中-公开
公开(公告)号：US20170294180A1
公开(公告)日：2017-10-12
申请号：US15507917
申请日：2016-06-30
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： YUSUKE HIRAGA , MITSUHIRO TANI
IPC分类号： G10K11/178 , B60R11/02
CPC分类号： G10K11/178 , B60R11/02 , G10K11/17854 , G10K11/17883 , G10K2210/1282 , G10K2210/3028 , G10K2210/3056
摘要： According to an aspect, an active noise control device includes: a control frequency determinator that determines a frequency of the noise; a reference cosine-wave generator that generates a reference cosine-wave signal having the determined frequency; a reference sine-wave generator that generates a reference sine-wave signal having the frequency of a noise; a first one-tap adaptive filter to which the reference cosine-wave signal is input, the first one-tap adaptive filter having a first filter coefficient; a second one-tap adaptive filter to which the reference sine-wave signal is input, the second one-tap adaptive filter having a second filter coefficient; an adder that adds an output signal from the first one-tap adaptive filter and an output signal from the second one-tap adaptive filter to each other; a secondary noise generator that is driven by an output signal from the adder to generate a secondary noise; a residual sound detector that detects a residual sound generated by interference between the secondary noise and the noise; a simulation signal generator that outputs a simulation cosine-wave signal and a simulation sine-wave signal, the simulation cosine-wave signal and the simulation sine-wave signal being obtained by correcting the reference cosine-wave signal and the reference sine-wave signal using a characteristic in which a transfer characteristic from the secondary noise generator to the residual sound detector is simulated; and a filter coefficient updating unit that updates the first filter coefficient and the second filter coefficient based on an output signal from the residual sound detector, an output signal from the simulation signal generator, the reference cosine-wave signal, the reference sine-wave signal, and the output signal from the adder. The secondary noise is reduced in a space where the residual sound detector is installed.

40. 发明申请

US20170034619A1 ACOUSTIC PROCESSOR HAVING LOW LATENCY 有权
标题翻译：具有低声望的声音处理器
公开(公告)号：US20170034619A1
公开(公告)日：2017-02-02
申请号：US15294556
申请日：2016-10-14
申请人： Avnera Corporation
发明人： Amit Kumar , Thomas Irrgang , Xudong Zhao
IPC分类号： H04R3/00 , G10K11/178
CPC分类号： H04R3/005 , G10K11/178 , G10K2210/3028 , G10K2210/3051 , G10K2210/3056 , H04R1/1083 , H04R2410/05
摘要： An audio system having low latency includes a digital audio processor as well as sensor inputs coupled to the processor. The sensor inputs may be microphone inputs. The audio processor operates at the same frequency as the sensor inputs, which is typically much higher than an audio signal provided to the audio processor. In some aspects the audio processor operates as a noise cancellation processor and does not include an audio input.
摘要翻译：具有低延迟的音频系统包括数字音频处理器以及耦合到处理器的传感器输入。传感器输入可以是麦克风输入。音频处理器的工作频率与传感器输入的频率相同，传感器输入通常远高于提供给音频处理器的音频信号。在一些方面，音频处理器用作噪声消除处理器，并且不包括音频输入。

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