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1. 发明申请

WO2017091583A1 CONTROLLING AMBIENT SOUND VOLUME 审中-公开
标题翻译：控制环境音量
公开(公告)号：WO2017091583A1
公开(公告)日：2017-06-01
申请号：PCT/US2016/063348
申请日：2016-11-22
申请人： BOSE CORPORATION
发明人： RULE, John Allen , GAUGER, Daniel M., Jr.
IPC分类号： H04R1/10 , H04R3/00
CPC分类号： H04R1/1083 , G10K11/178 , G10K11/17854 , G10K11/17881 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/511 , H04R3/002 , H04R3/04 , H04R29/001 , H04R2410/05 , H04R2430/01 , H04R2430/03 , H04R2460/01 , H04R2460/05
摘要： An earpiece includes a feed-forward microphone coupled to the environment outside the headphones, a feedback microphone coupled to an ear canal of a user when the earpiece is in use, a speaker coupled to the ear canal of the user when the earpiece is in use, a digital signal processor implementing feed-forward and feedback noise compensation filters between the respective microphones and the speaker, and a memory storing an ordered sequence of sets of filters for use by the digital signal processor. Each of the sets of filters includes a feed-forward filter that provides a different frequency-dependent amount of sound pass-through or cancellation, which in combination with residual ambient sound reaching the ear results in a total insertion gain at the ear of a user.
摘要翻译：耳机包括耦合到耳机外部的环境的前馈麦克风，当耳机使用时耦合到用户的耳道的反馈麦克风，耦合到耳机的耳道的扬声器，当使用耳机时使用者，在各个麦克风和扬声器之间实现前馈和反馈噪声补偿滤波器的数字信号处理器，以及存储供数字信号处理器使用的滤波器组的有序序列的存储器。每组滤波器包括前馈滤波器，该前馈滤波器提供不同的频率相关量的声音通过或消除，其与到达耳朵的残余环境声音相结合导致用户耳朵处的总插入增益

2. 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。

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