序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
1 主动式噪音控制装置 CN201310190117.6 2013-05-21 CN103426427B 2016-02-10 井上敏郎; 坂本浩介
发明提供一种主动式噪音控制装置,能够最大限度地利用混频器的输出范围,从而根据车辆的行驶状况发出最适当的抵消音。该主动式噪音控制装置(100)包括:第1主动式噪音控制部(11),其生成针对第1噪音事态的第1抵消信号(Sc1);第2主动式噪音控制部(12),其生成针对第2噪音事态的第2抵消信号(Sc2);混频器(20),其将所述第1抵消信号(Sc1)与所述第2抵消信号(Sc2)混合而生成混合抵消信号(Sc0);扬声器(28),其根据所述混合抵消信号(Sc0)输出抵消音;振幅抑制部(50),其根据所述第1抵消信号(Sc1)的振幅抑制所述第2抵消信号(Sc2)的振幅。
2 有源噪声抑制装置 CN200680014196.3 2006-02-15 CN101176145A 2008-05-07 光畑伸辅
发明提供一种有源噪声抑制装置,包括生成具有预定频率的基本波形的基本声源(121、122),从对基本波形乘以自适应滤波器系数W0、W1后的信号,生成控制音,抑制噪声中的与预定频率对应的频率成分。还包括频率微调电路(210),当使用自适应滤波器系数检测到的控制音的相位变化量大于预定的阈值时,使基本声源输出的基本波形的频率增加或减少预定量。对周期性噪声的峰值频率变动的跟踪性优异。
3 在具有适应性噪音消除(ANC)的个人语音设备中带限抗噪音 CN201280038460.2 2012-05-18 CN103718239A 2014-04-09 杰弗里·奥尔德森; N·卡瓦特拉; G·D·卡马斯; 阿里·阿卜杜拉扎德米拉尼; 约翰·L·梅安森
一种个人语音设备,例如无线电话,包括噪音消除电路,其适应性地从参考麦克信号(ref)产生抗噪音信号,并且将该抗噪音信号注入到扬声器或其他传感器输出以导致周围语音声音的消除。误差麦克风(err)也可以提供在扬声器附近以测量传感器的输出以便控制抗噪音信号的调适和以估计从噪音消除电路穿过传感器的电声音路径。执行适应性噪音消除功能的处理电路(30A)也调整(37A)抗噪音信号相对于参考麦克风信号的频率响应,和/或独立于由参考麦克风信号提供的调适调整(39)适应性滤波器的响应。
4 应用于主动噪声消除ANR机的啸叫抑制方法和装置 CN201310298438.8 2013-07-16 CN103391496A 2013-11-13 刘崧; 楼厦厦; 王福钋
发明公开了一种应用于主动噪声消除ANR机的啸叫抑制方法和装置。该方法包括:利用第一麦克和第二麦克风采集信号;第一麦克风设置于所述ANR耳机的在被佩戴时位于耳道外的位置,第二麦克风设置于所述ANR耳机的在被佩戴时位于耳道内的位置;根据第一麦克风和第二麦克风所采集的信号之间的关系判断所述ANR耳机的当前状态为不可能产生啸叫的状态还是可能产生啸叫的状态;当所述ANR耳机的当前状态为可能产生啸叫的状态时,启动防止啸叫产生的处理。该技术方案能够做到ANR耳机始终没有啸叫产生。
5 抑制通信信号的周期干扰分量部分的噪声抑制电路及其有关的方法 CN97194364.8 1997-03-12 CN1120473C 2003-09-03 E·D·罗梅斯布尔格
一种噪声抑制器及其有关的方法抑制通信信号的周期噪声分量。通信信号的周期噪声分量的周期是通过使通信信号与延迟不同延迟量的通信信号相关来确定的。一旦噪声分量部分的周期被确定,显示相应周期性的周期信号被产生并从通信信号中减去。所得的差值信号形成一个噪声抑制的通信信号。在操作无线电话设备时,无线电话设备收到的由开动汽车发动机产生的发动机声音形成的背景噪声可在噪声抑制器工作期间抑制掉。
6 采用校正信号抑制压波的系统和方法 CN02149512.2 2002-09-19 CN1420261A 2003-05-28 J·A·霍格勒; M·G·怀斯; S·M·谢弗; M·E·奥斯丁
发明的系统和方法提供了一种在工作系统中提供校正调制信号以抑制声学压波的方法。该方法包括采样(10)工作系统产生的声学压力波并采样以前产生的校正调制信号(56),以前产生的校正调制信号具有参数。所述方法还包括对采样的声学压力波进行快速傅里叶变换处理(330)。对采样的声学压力波进行单频离散傅里叶变换对处理(312,314)。此外,所述方法包括根据快速傅里叶变换处理和离散傅里叶变换处理确定在声学压力波中的主要压力波的频率相位和幅度(20)。此外,所述方法包括根据主要压力波的频率、相位和幅度以及以前产生的校正调制信号的参数产生正弦校正调制信号(50)以抑制声学压力波,校正调制信号与声学压力波具有基本相同的频率和通常180度的相位差
7 抑制通信信号的周期干扰分量部分的噪声抑制电路及其有关的方法 CN97194364.8 1997-03-12 CN1222994A 1999-07-14 E·D·罗梅斯布尔格
一种噪声抑制器及其有关的方法抑制通信信号的周期噪声分量。通信信号的周期噪声分量的周期是通过使通信信号与延迟不同延迟量的通信信号相关来确定的。一旦噪声分量部分的周期被确定,显示相应周期性的周期信号被产生并从通信信号中减去。所得的差值信号形成一个噪声抑制的通信信号。在操作无线电话设备时,无线电话设备收到的由开动汽车发动机产生的发动机声音形成的背景噪声可在噪声抑制器工作期间抑制掉。
8 在具有适应性噪音消除(ANC)的个人语音设备中的带限抗噪音 CN201280027248.6 2012-05-24 CN103597541B 2017-05-31 N·卡瓦特拉; 阿里·阿卜杜拉扎德米拉尼; 杰弗里·奥尔德森
一种个人语音设备,例如无线电话,包括噪音消除电路,其适应性地从参考麦克信号产生抗噪音信号,并且将该抗噪音信号注入到扬声器或其他传感器输出以导致周围音频声音的消除。误差麦克风提供在扬声器附近以测量传感器的输出以便控制抗噪音信号的调适和以估计从噪音消除电路穿过传感器的电声音路径。适应性地产生抗噪音信号来使在误差麦克风处的周围音频声音最小化。执行适应性噪音消除(ANC)功能的处理电路还过滤参考麦克风信号和/或误差麦克风信号的一个或两者,以偏置适应性滤波器在一个或多个频率区域中的调适,以改变在误差麦克风处的周围音频声音的最小化程度。
9 应用于主动噪声消除ANR机的啸叫抑制方法和装置 CN201310298438.8 2013-07-16 CN103391496B 2016-08-10 刘崧; 楼厦厦; 王福钋
发明公开了一种应用于主动噪声消除ANR机的啸叫抑制方法和装置。该方法包括:利用第一麦克和第二麦克风采集信号;第一麦克风设置于所述ANR耳机的在被佩戴时位于耳道外的位置,第二麦克风设置于所述ANR耳机的在被佩戴时位于耳道内的位置;根据第一麦克风和第二麦克风所采集的信号之间的关系判断所述ANR耳机的当前状态为不可能产生啸叫的状态还是可能产生啸叫的状态;当所述ANR耳机的当前状态为可能产生啸叫的状态时,启动防止啸叫产生的处理。该技术方案能够做到ANR耳机始终没有啸叫产生。
10 在具有适应性噪音消除(ANC)的个人语音设备中带限抗噪音 CN201280038460.2 2012-05-18 CN103718239B 2016-01-20 杰弗里·奥尔德森; N·卡瓦特拉; G·D·卡马斯; 阿里·阿卜杜拉扎德米拉尼; 约翰·L·梅安森
一种个人语音设备,例如无线电话,包括噪音消除电路,其适应性地从参考麦克信号(ref)产生抗噪音信号,并且将该抗噪音信号注入到扬声器或其他传感器输出以导致周围语音声音的消除。误差麦克风(err)也可以提供在扬声器附近以测量传感器的输出以便控制抗噪音信号的调适和以估计从噪音消除电路穿过传感器的电声音路径。执行适应性噪音消除功能的处理电路(30A)也调整(37A)抗噪音信号相对于参考麦克风信号的频率响应,和/或独立于由参考麦克风信号提供的调适调整(39)适应性滤波器的响应。
11 在具有适应性噪音消除(ANC)的个人语音设备中的带限抗噪音 CN201280027248.6 2012-05-24 CN103597541A 2014-02-19 N·卡瓦特拉; 阿里·阿卜杜拉扎德米拉尼; 杰弗里·奥尔德森
一种个人语音设备,例如无线电话,包括噪音消除电路,其适应性地从参考麦克信号产生抗噪音信号,并且将该抗噪音信号注入到扬声器或其他传感器输出以导致周围语音声音的消除。误差麦克风提供在扬声器附近以测量传感器的输出以便控制抗噪音信号的调适和以估计从噪音消除电路穿过传感器的电声音路径。适应性地产生抗噪音信号来使在误差麦克风处的周围语音声音最小化。执行适应性噪音消除(ANC)功能的处理电路还过滤参考麦克风信号和/或误差麦克风信号的一个或两者,以偏置适应性滤波器在一个或多个频率区域中的调适,以改变在误差麦克风处的周围语音声音的最小化程度。
12 主动式噪音控制装置 CN201310190117.6 2013-05-21 CN103426427A 2013-12-04 井上敏郎; 坂本浩介
发明提供一种主动式噪音控制装置,能够最大限度地利用混频器的输出范围,从而根据车辆的行驶状况发出最适当的抵消音。该主动式噪音控制装置(100)包括:第1主动式噪音控制部(11),其生成针对第1噪音事态的第1抵消信号(Sc1);第2主动式噪音控制部(12),其生成针对第2噪音事态的第2抵消信号(Sc2);混频器(20),其将所述第1抵消信号(Sc1)与所述第2抵消信号(Sc2)混合而生成混合抵消信号(Sc0);扬声器(28),其根据所述混合抵消信号(Sc0)输出抵消音;振幅抑制部(50),其根据所述第1抵消信号(Sc1)的振幅抑制所述第2抵消信号(Sc2)的振幅。
13 有源噪声抑制装置 CN200680014196.3 2006-02-15 CN101176145B 2010-12-15 光畑伸辅
发明提供一种有源噪声抑制装置,包括生成具有预定频率的基本波形的基本声源(121、122),从对基本波形乘以自适应滤波器系数W0、W1后的信号,生成控制音,抑制噪声中的与预定频率对应的频率成分。还包括频率微调电路(210),当使用自适应滤波器系数检测到的控制音的相位变化量大于预定的阈值时,使基本声源输出的基本波形的频率增加或减少预定量。对周期性噪声的峰值频率变动的跟踪性优异。
14 Sound-modulating device US15581302 2017-04-28 US09986335B2 2018-05-29 Jen-Fang Yu
A sound-modulating device used in a confined space is provided. The sound-modulating device includes an event detector and an audio module in communication with each other. The event detector detects an event and generates a trigger signal in response to the detected event. The audio module plays a music segment in response to the trigger signal. The frequencies of the music segment range from 20 Hz to 20000 Hz. The intensities of the music segment are smaller than or equal to 75 dB.
15 MUSIC COMPENSATION FOR ACTIVE NOISE CONTROL SYSTEMS US15348042 2016-11-10 US20170140747A1 2017-05-18 DARREL RAY JUDD
A vehicle includes a music signal processing system having a loudspeaker disposed within a passenger compartment of the vehicle and emitting audible music into the passenger compartment. A microphone is disposed within the passenger compartment and converts the audible music and noise within the passenger compartment into an analog electrical microphone signal. An analog-to-digital converter is connected to an output of the microphone and receives the analog electrical microphone signal and converts the analog electrical microphone signal into a digital electrical microphone signal. A sample rate down converter is connected to an output of the analog-to-digital converter. A narrow band adaptive noise control is connected to an output of the sample rate down converter and receives an engine speed signal. A sample rate up converter is connected to an output of the narrow band adaptive noise control. An adder device adds an output of the sample rate up converter to a music signal. A digital-to-analog converter is connected to an output of the adder device. An amplifier has an input connected to an output of the digital-to-analog converter. An output of the amplifier is connected to an input of the loudspeaker.
16 Howling Suppression Method and Device Applied to an ANR Earphone US14901555 2014-07-04 US20160372102A1 2016-12-22 Song LIU; Shasha LOU; Fupo WANG
The present invention discloses a howling suppression method and device applied to an ANR earphone. The method comprises: collecting signals by using a first microphone and a second microphone; wherein the first microphone is arranged in a position outside an auditory meatus when said ANR earphone is worn, and the second microphone is arranged in a position inside the auditory meatus when the ANR earphone is worn; according to a relation between signals collected by the first microphone and the second microphone, judging whether the current state of said ANR earphone is a state unable to produce a howling or a state able to produce a howling; and when the current state of said ANR earphone is a state able to produce a howling, starting processing for preventing howling production. The technical scheme can achieve that the ANR earphone does not produce a howling all the time.
17 Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC) US13333484 2011-12-21 US08948407B2 2015-02-03 Jeffrey Alderson; Nitin Kwatra; Gautham Devendra Kamath; Ali Abdollahzadeh Milani; John L. Melanson
A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone may also be provided proximate the speaker to measure the output of the transducer in order to control the adaptation of the anti-noise signal and to estimate an electro-acoustical path from the noise canceling circuit through the transducer. A processing circuit that performs the adaptive noise canceling (ANC) function also either adjusts the frequency response of the anti-noise signal with respect to the reference microphone signal, and/or by adjusting the response of the adaptive filter independent of the adaptation provided by the reference microphone signal.
18 Acoustic device, noise control method, noise control program, and recording medium US13263289 2009-04-15 US08861741B2 2014-10-14 Keitaro Sugawara
When the signal level of a signal AOD, to which a cancellation signal CND of ACD is added, is larger than the signal level of ACD, a rate of change calculation part 173 calculates the maximum value (=1) as a rate of change parameter for showing that the degree of noise cancellation should be made highest. When the signal level of AOD, to which CND of ACD is added, is smaller than the signal level of ACD, the rate of change calculation part 173 calculates a change parameter rate to show that the larger the difference between both the signal levels are, the lower the degree of the noise cancellation becomes. A cancellation signal generation part 175 then generates CND and transmits it to an addition part 171 while taking the values of the change parameter rate into consideration. As a result, proper noise control can be easily performed.
19 Active noise control apparatus US13894149 2013-05-14 US08848937B2 2014-09-30 Toshio Inoue; Kosuke Sakamoto
An active noise control apparatus includes a first active noise controller for generating a first canceling signal for a first noise type, a second active noise controller for generating a second canceling signal for a second noise type that is different from the first noise type, a mixer for mixing the first canceling signal and the second canceling signal into a mixed canceling signal, a canceling sound output unit for outputting a canceling sound based on the mixed canceling signal, and an amplitude suppressor for suppressing the amplitude of the second canceling signal depending on the amplitude of the first canceling signal.
20 Active vibratory noise control apparatus US12794759 2010-06-06 US08817998B2 2014-08-26 Toshio Inoue
An active vibratory noise control apparatus includes a basic signal generator configured to output a basic sine wave signal and a basic cosine wave signal. An adaptive finite impulse response filter is configured to output a control signal to cancel the vibratory noise. A vibratory noise cancelling device is configured to generate vibratory-noise canceling sound. An error signal detector is configured to output an error signal. A reference signal generator is configured to output a reference signal and corrects the basic cosine wave signal and the basic sine wave signal based on correction values. A buffer is configured to accumulate a number of reference signals corresponding to a number of taps of the adaptive finite impulse response filter. A filter coefficient updating device is configured to sequentially update filter coefficients of the adaptive finite impulse response filter to minimize the error signal.
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