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1. 发明申请

WO2010129226A2 ANR SIGNAL PROCESSING ENHANCEMENTS 审中-公开
标题翻译： ANR信号处理增强
公开(公告)号：WO2010129226A2
公开(公告)日：2010-11-11
申请号：PCT/US2010/032403
申请日：2010-04-26
申请人： BOSE CORPORATION , CARRERAS, Ricardo F. , JOHO, Marcel , GAUGER, Daniel M. , ISABELLE, Steven H.
发明人： CARRERAS, Ricardo F. , JOHO, Marcel , GAUGER, Daniel M. , ISABELLE, Steven H.
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/3028 , G10K2210/3044 , G10K2210/3051
摘要： An ANR circuit, possibly of a personal ANR device and possibly within an ADC of the ANR circuit, feedback reference data, feedforward reference data and/or pass-through audio data is provided to a secondary downsampling (and/or decimating) filter and/or is provided to a calculating block (e.g., RMS or absolute calculation block) to derive side-chain data to be output by the ANR circuit to a processing device coupled to the ANR circuit to employ the side-chain data in an analysis related to the provision of feedback-based ANR, feedforward-based ANR and/or pass-through audio by the ANR circuit. In an ANR circuit of a personal ANR device, a digital filter is structured to introduce one or more zeros to add gain to introduce positive phase in the provision of feedback-based ANR, wherein the gain follows a frequency-dependent "ski-slope" gain curve with little gain added at lower audible frequencies, with increasing gain that increases with frequency added at higher audible frequencies, and with the increasing gain flattening at frequencies above audible frequencies.
摘要翻译： ANR电路（可能是个人ANR设备，并且可能在ANR电路的ADC内）反馈参考数据，前馈参考数据和/或传递音频数据被提供给二次下采样（和/或抽取）滤波器和/ 或者被提供给计算块（例如，RMS或绝对计算块）以导出将由ANR电路输出到与ANR电路耦合的处理设备的侧链数据，以在与...相关的分析中使用侧链数据通过ANR电路提供基于反馈的ANR，基于前馈的ANR和/或直通音频。在个人ANR设备的ANR电路中，数字滤波器被构造为引入一个或多个零点以增加增益以在提供基于反馈的ANR中引入正相位，其中增益遵循频率依赖的“滑坡” 增益曲线在较低的可听频率处增加了很少的增益，随着增益的增加，随着在更高的可听频率处的频率增加而增加，并且随着在可听频率之上的频率上增加的增益变平。

2. 发明申请

WO2020243262A1 MULTIPURPOSE MICROPHONE IN ACOUSTIC DEVICES 审中-公开
公开(公告)号：WO2020243262A1
公开(公告)日：2020-12-03
申请号：PCT/US2020/034866
申请日：2020-05-28
申请人： BOSE CORPORATION
发明人： HONDA, Masanori , BARNES, Christopher A. , CARRERAS, Ricardo F. , GANESHKUMAR, Alaganandan
IPC分类号： G10K11/178
摘要： This document describes a method that includes receiving an input signal representing audio captured by a sensor disposed in an active noise reduction (ANR) device, determining, by one or more processing devices, that the ANR device is operating in a first operational mode, and in response, applying a first gain to the input signal to generate a first amplified input signal. The method also includes determining, by the one or more processing devices, that the ANR device is operating in a second operational mode different from the first operational mode, and in response, applying a second gain to the input signal to generate a second amplified input signal, wherein the second gain is different from the first gain. The method further includes processing the first or second amplified input signal to generate an output signal, and generating, by an acoustic transducer, an audio output based on the output signal.

3. 发明申请

WO2020243253A1 GAIN ADJUSTMENT IN ANR SYSTEM WITH MULTIPLE FEEDFORWARD MICROPHONES 审中-公开
公开(公告)号：WO2020243253A1
公开(公告)日：2020-12-03
申请号：PCT/US2020/034849
申请日：2020-05-28
申请人： BOSE CORPORATION
发明人： HONDA, Masanori , CARRERAS, Ricardo F. , CATTELL, Joseph H.
IPC分类号： G10K11/178
摘要： Technology described in this document can be embodied in a method that includes receiving a first input signal representing audio captured by a first sensor disposed in a signal path of an active noise reduction (ANR) device, and receiving a second input signal representing audio captured by a second sensor disposed in the signal path of the ANR device. The method also includes processing, by at least one compensator, the first input signal and the second input signal to generate a drive signal for an acoustic transducer of the ANR device. A gain applied to the signal path is at least 3dB less relative to an ANR signal path having a single sensor.

4. 发明申请

WO2014200756A2 CONTROLLING STABILITY IN ANR DEVICES 审中-公开
标题翻译：控制ANR设备的稳定性
公开(公告)号：WO2014200756A2
公开(公告)日：2014-12-18
申请号：PCT/US2014/040641
申请日：2014-06-03
申请人： BOSE CORPORATION
发明人： BARNES, Christopher A. , CARRERAS, Ricardo F. , GAUGER, Daniel M., Jr.
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17833 , G10K11/1787 , G10K2210/3039 , G10K2210/3056 , H04R1/1083 , H04R2460/01
摘要： Stability is provided in an active noise reduction (ANR) headphone by measuring a sound field to generate an input signal, filtering and applying a variable gain to the input signal to produce a first filtered signal using a first filter and a variable gain amplifier in an ANR signal pathway, outputting the filtered signal, and simultaneously with outputting the first filtered signal, sampling a signal at a point in the ANR signal pathway and filtering the sampled signal using a second filter to produce a second filtered signal. The second filtered signal is compared to a threshold, and if the comparison finds that the second filtered signal is greater than the threshold signal, the gain of the variable gain amplifier is changed to attenuate the first filtered signal. The second filter applies different gains, different by at least 10 dB, in different frequency ranges between 10 Hz and 10 kHz.
摘要翻译：通过测量声场以产生输入信号，对输入信号进行滤波和应用可变增益以产生第一滤波信号，使用第一滤波器和可变增益放大器，在有源降噪（ANR）耳机中提供稳定性 ANR信号通路，输出滤波后的信号，同时输出第一滤波信号，对ANR信号通路中的一点采样信号，并使用第二滤波器对采样信号进行滤波，以产生第二滤波信号。将第二滤波信号与阈值进行比较，并且如果比较发现第二滤波信号大于阈值信号，则改变可变增益放大器的增益以衰减第一滤波信号。第二个滤波器在10 Hz和10 kHz之间的不同频率范围内应用不同的增益，不同的增益至少为10 dB。

5. 发明申请

WO2012135182A9 MEASURING TRANSDUCER DISPLACEMENT 审中-公开
公开(公告)号：WO2012135182A9
公开(公告)日：2012-10-04
申请号：PCT/US2012/030684
申请日：2012-03-27
申请人： BOSE CORPORATION , YAMKOVOY, Paul G. , BAKALOS, Pericles Nichola , CARRERAS, Ricardo F. , GAUGER, JR., Daniel M.
发明人： YAMKOVOY, Paul G. , BAKALOS, Pericles Nichola , CARRERAS, Ricardo F. , GAUGER, JR., Daniel M.
IPC分类号： H04R3/00 , H04R29/00
摘要： Displacement of a moving diaphragm in an electroacoustic transducer is measured by modulating an electrical signal based on changes in capacitance between the voice coil assembly and the magnetic structure resulting from relative motion between the voice coil and the magnetic structure. The modulated electrical signal is demodulated to produce an output signal having a value proportional to the displacement.

6. 发明申请

WO2010129219A1 ANR WITH ADAPTIVE GAIN 审中-公开
标题翻译： ANR具有自适应增益
公开(公告)号：WO2010129219A1
公开(公告)日：2010-11-11
申请号：PCT/US2010/032371
申请日：2010-04-26
申请人： BOSE CORPORATION , JOHO, Marcel , CARRERAS, Ricardo F. , GAUGER, Daniel M. , ISABELLE, Steven H.
发明人： JOHO, Marcel , CARRERAS, Ricardo F. , GAUGER, Daniel M. , ISABELLE, Steven H.
IPC分类号： G10K11/178
CPC分类号： H04B1/202 , G10K11/178 , G10K2210/108 , G10K2210/1081 , G10K2210/3026 , G10K2210/30391 , G10K2210/3056 , G10K2210/3214 , G10K2210/503 , H04R1/1016 , H04R1/2803 , H04R2460/11
摘要： An ANR circuit, possibly of a personal ANR device, monitors a sound level of environmental sounds detected by a microphone external to an earpiece in which the ANR circuit is providing feedback-based ANR, and increases or decreases the degree of feedback-based ANR provided in response to the external microphone detecting a higher or lower sound level, respectively. Increasing and decreasing the degree of feedback-based ANR provided may be carried out by changing a variable loop gain of the ANR circuit and/or a range of frequencies of environmental sounds attenuated by the feedback-based ANR. An ANR circuit, possibly of a personal ANR device, reduces the degree of feedforward-based ANR that it provides in response to receiving an indication of the operation of a manually-operable control. The reduction of degree of feedforward-based ANR may be effected by turning off or otherwise deactivating the provision of feedforward-based ANR, reducing a range of frequencies of environmental noise sounds attenuated by the feedforward-based ANR to provide less attenuation of sounds detected by a feedforward microphone that are in a range of frequencies deemed to be those of human speech, and/or creating a notch in the range of frequencies of environmental noise sounds attenuated by the feedforward-based ANR to provide less attenuation of sounds detected by the feedforward microphone that are in a range of frequencies deemed to be those of human speech.
摘要翻译： ANR电路（可能是个人ANR设备）可以监视由耳机外部的麦克风检测到的环境声音的声级，其中ANR电路提供基于反馈的ANR，并且提供或减少所提供的基于反馈的ANR的程度响应于外部麦克风分别检测更高或更低的声级。增加和减少提供的基于反馈的ANR的程度可以通过改变ANR电路的可变环路增益和/或由基于反馈的ANR衰减的环境声音的频率范围来进行。 ANR电路（可能是个人ANR设备）减少了响应于接收到手动操作控制的操作的指示而提供的基于前馈的ANR的程度。基于前馈的ANR的程度的降低可以通过关闭或以其它方式去激活提供基于前馈的ANR来实现，从而减少由基于前馈的ANR衰减的环境噪声声音的频率范围，以提供较少的由在被认为是人类语音的频率范围内的前馈麦克风，和/或在由基于前馈的ANR衰减的环境噪声声音的频率范围内创建陷波，以提供较少的由前馈检测到的声音的衰减在被认为是人类言语的频率范围内的麦克风。

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