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1. 发明申请

US20120250872A1 Method and System for Modeling External Volume Changes Within an Acoustic Echo Canceller 有权
标题翻译：在声学回声消除器内建模外部音量变化的方法和系统
公开(公告)号：US20120250872A1
公开(公告)日：2012-10-04
申请号：US13076691
申请日：2011-03-31
申请人： Wilfrid Paul LeBlanc , Elias Nemer
发明人： Wilfrid Paul LeBlanc , Elias Nemer
IPC分类号： G10K11/16
CPC分类号： H04M9/082 , H04R3/02 , H04R2420/07 , H04R2430/01 , H04R2430/03 , H04R2499/13
摘要： A method and system are provided in which a device, such as an acoustic echo canceller, may reduce the residual echo that may be heard at the far end of a conversation when an external speaker volume is changed. The device may compute a gain based on an echo estimate produced by a filter and on a near-end signal comprising audio information. The gain may be based on a correlation of the echo estimate and the near-end signal that tracks the changes in volume. Once computed, the gain may be validated to ensure that it is being applied when appropriate. The echo estimate may be adjusted by first applying the gain to an output of the filter and subsequently scaling a value of each of the coefficients of the filter based on the gain. The gain may be smoothed out over consecutive frames based on several adaptation schemes.
摘要翻译：提供了一种方法和系统，其中诸如声学回声消除器的装置可以在外部扬声器音量改变时减少可能在对话的远端听到的残余回声。设备可以基于由滤波器产生的回波估计和包括音频信息的近端信号来计算增益。增益可以基于跟踪体积变化的回波估计和近端信号的相关性。一旦计算，可以验证增益以确保在适当时适用该增益。可以通过首先将增益应用于滤波器的输出并随后基于增益来缩放滤波器的每个系数的值来调整回波估计。可以基于若干适配方案在连续帧上平滑增益。

2. 发明授权

US08644522B2 Method and system for modeling external volume changes within an acoustic echo canceller 有权
标题翻译：用于对声学回声消除器内的外部音量变化进行建模的方法和系统
公开(公告)号：US08644522B2
公开(公告)日：2014-02-04
申请号：US13076691
申请日：2011-03-31
申请人： Wilfrid Paul LeBlanc , Elias Nemer
发明人： Wilfrid Paul LeBlanc , Elias Nemer
IPC分类号： A61F11/06 , G10K11/16 , H03B29/00 , H04B15/00
CPC分类号： H04M9/082 , H04R3/02 , H04R2420/07 , H04R2430/01 , H04R2430/03 , H04R2499/13
摘要： A method and system are provided in which a device, such as an acoustic echo canceller, may reduce the residual echo that may be heard at the far end of a conversation when an external speaker volume is changed. The device may compute a gain based on an echo estimate produced by a filter and on a near-end signal comprising audio information. The gain may be based on a correlation of the echo estimate and the near-end signal that tracks the changes in volume. Once computed, the gain may be validated to ensure that it is being applied when appropriate. The echo estimate may be adjusted by first applying the gain to an output of the filter and subsequently scaling a value of each of the coefficients of the filter based on the gain. The gain may be smoothed out over consecutive frames based on several adaptation schemes.
摘要翻译：提供了一种方法和系统，其中诸如声学回声消除器的装置可以在外部扬声器音量改变时减少可能在对话的远端听到的残余回声。设备可以基于由滤波器产生的回波估计和包括音频信息的近端信号来计算增益。增益可以基于跟踪体积变化的回波估计和近端信号的相关性。一旦计算，可以验证增益以确保在适当时适用该增益。可以通过首先将增益应用于滤波器的输出并随后基于增益来缩放滤波器的每个系数的值来调整回波估计。可以基于若干适配方案在连续帧上平滑增益。

3. 发明申请

US20100223054A1 SINGLE-MICROPHONE WIND NOISE SUPPRESSION 有权
公开(公告)号：US20100223054A1
公开(公告)日：2010-09-02
申请号：US12780179
申请日：2010-05-14
申请人： Elias Nemer , Wilfrid LeBlanc , Syavosh Zad-Issa , Jes Thyssen
发明人： Elias Nemer , Wilfrid LeBlanc , Syavosh Zad-Issa , Jes Thyssen
IPC分类号： G10L19/00
CPC分类号： H04R3/007
摘要： A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame.

4. 发明授权

US08515097B2 Single microphone wind noise suppression 有权
标题翻译：单麦克风风噪声抑制
公开(公告)号：US08515097B2
公开(公告)日：2013-08-20
申请号：US12261868
申请日：2008-10-30
申请人： Elias Nemer , Wilfrid LeBlanc , Mohammad Zad-Issa , Jes Thyssen
发明人： Elias Nemer , Wilfrid LeBlanc , Mohammad Zad-Issa , Jes Thyssen
IPC分类号： H04B15/00
CPC分类号： H04R3/00
摘要： A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame.
摘要翻译：描述了用于抑制音频信号中的诸如风噪声之类的非平稳噪声的技术。根据该技术，分析音频信号的一系列帧以检测音频信号是否包括非平稳噪声。如果检测到音频信号包括非平稳噪声，则执行多个步骤。根据这些步骤，确定音频信号的帧是否包括非平稳噪声或语音和非平稳噪声。如果确定帧包括非平稳噪声，则将第一滤波器应用于帧，并且如果确定帧包括语音和非平稳噪声，则将第二滤波器应用于帧。

5. 发明授权

US07280619B2 Method and apparatus for compensating I/Q imbalance in receivers 有权
标题翻译：用于补偿接收机I / Q不平衡的方法和装置
公开(公告)号：US07280619B2
公开(公告)日：2007-10-09
申请号：US10746550
申请日：2003-12-23
申请人： Elias Nemer , Ahmed Said
发明人： Elias Nemer , Ahmed Said
IPC分类号： H03D3/00 , H03D1/04 , H04B1/00 , H04B15/00 , H03K5/159
CPC分类号： H04L27/3863 , H03D3/009 , H04L27/3872 , H04L2027/0024
摘要： A method and apparatus for compensating I/Q imbalance in receivers is described. The method includes determining a difference between energies of two quadratures, correcting an amplitude imbalance using the difference between the energies of two quadratures, determining a cross-correlation between the two quadratures, and correcting a phase imbalance using the cross-correlation between the two quadratures.
摘要翻译：描述了用于补偿接收机中的I / Q不平衡的方法和装置。该方法包括确定两个正交的能量之间的差异，使用两个正交能量之间的差校正幅度不平衡，确定两个正交之间的互相关，以及使用两个正交之间的互相关来校正相位不平衡。

6. 发明申请

US20060291553A1 Equalizer mode selection based on distribution of symbol error 失效
标题翻译：基于符号误差分布的均衡器模式选择
公开(公告)号：US20060291553A1
公开(公告)日：2006-12-28
申请号：US11168897
申请日：2005-06-27
申请人： Elias Nemer
发明人： Elias Nemer
IPC分类号： H03H7/30 , H03D1/04
CPC分类号： H04N5/211 , H04L25/03057
摘要： According to some embodiments, an equalizer receives a signal and generates symbols based on the received signal. Moreover, a controller may be provided to determine a mode of equalizer operation based at least in part on a distribution of error associated with the symbols.
摘要翻译：根据一些实施例，均衡器接收信号并基于接收到的信号产生符号。此外，可以提供控制器以至少部分地基于与符号相关联的错误的分布来确定均衡器操作的模式。

7. 发明申请

US20100217590A1 SPEAKER LOCALIZATION SYSTEM AND METHOD 审中-公开
标题翻译：扬声器本地化系统和方法
公开(公告)号：US20100217590A1
公开(公告)日：2010-08-26
申请号：US12391879
申请日：2009-02-24
申请人： Elias Nemer , Jes Thyssen
发明人： Elias Nemer , Jes Thyssen
IPC分类号： G10L15/20
CPC分类号： G01S3/86 , G01S3/8006 , G10L15/26 , G10L2021/02166
摘要： A system and method for performing speaker localization is described. The system and method utilizes speaker recognition to provide an estimate of the direction of arrival (DOA) of speech sound waves emanating from a desired speaker with respect to a microphone array included in the system. Candidate DOA estimates may be preselected or generated by one or more other DOA estimation techniques. The system and method is suited to support steerable beamforming as well as other applications that utilize or benefit from DOA estimation. The system and method provides robust performance even in systems and devices having small microphone arrays and thus may advantageously be implemented to steer a beamformer in a cellular telephone or other mobile telephony terminal featuring a speakerphone mode.
摘要翻译：描述用于执行扬声器定位的系统和方法。系统和方法利用说话者识别来提供相对于包括在系统中的麦克风阵列从期望的扬声器发出的语音声波的到达方向（DOA）的估计。候选DOA估计可以由一个或多个其它DOA估计技术预先选择或产生。该系统和方法适用于支持可导向波束形成以及利用或受益于DOA估计的其他应用。该系统和方法即使在具有小麦克风阵列的系统和设备中也提供了强大的性能，因此可以有利地实现以引导具有扬声器电话模式的蜂窝电话或其他移动电话终端中的波束形成器。

8. 发明授权

US07463679B2 Equalizer mode selection based on distribution of symbol error 失效
标题翻译：基于符号误差分布的均衡器模式选择
公开(公告)号：US07463679B2
公开(公告)日：2008-12-09
申请号：US11168897
申请日：2005-06-27
申请人： Elias Nemer
发明人： Elias Nemer
IPC分类号： H03H7/30
CPC分类号： H04N5/211 , H04L25/03057
摘要： According to some embodiments, an equalizer receives a signal and generates symbols based on the received signal. Moreover, a controller may be provided to determine a mode of equalizer operation based at least in part on a distribution of error associated with the symbols.
摘要翻译：根据一些实施例，均衡器接收信号并基于接收到的信号产生符号。此外，可以提供控制器以至少部分地基于与符号相关联的错误的分布来确定均衡器操作的模式。

9. 发明申请

US20130163781A1 BREATHING NOISE SUPPRESSION FOR AUDIO SIGNALS 审中-公开
标题翻译：呼吸噪音抑制音频信号
公开(公告)号：US20130163781A1
公开(公告)日：2013-06-27
申请号：US13335221
申请日：2011-12-22
申请人： Jes Thyssen , Elias Nemer
发明人： Jes Thyssen , Elias Nemer
IPC分类号： H04B15/00
CPC分类号： H04R3/007 , G10L21/0208 , G10L21/0232 , G10L25/51 , G10L2021/02161
摘要： Systems and methods are described herein for detecting and suppressing breathing noise in an audio signal. First, systems and methods are described that analyze audio signals generated by two or more microphones to detect breathing noise in one of the audio signals and that leverage the multiple microphones to suppress detected breathing noise in a manner that minimizes signal distortion. Then, systems and methods are described that are capable of analyzing the audio signal generated by a single microphone to detect breathing noise in the audio signal and thereafter suppress it.
摘要翻译：这里描述了用于检测和抑制音频信号中的呼吸噪声的系统和方法。首先，描述分析由两个或更多个麦克风产生的音频信号以检测音频信号之一中的呼吸噪声并且以最小化信号失真的方式利用多个麦克风来抑制检测到的呼吸噪声的系统和方法。然后，描述能够分析由单个麦克风产生的音频信号以检测音频信号中的呼吸噪声并随后抑制的系统和方法。

10. 发明授权

US08059762B2 System and method for enhanced symbol generation 有权
标题翻译：增强符号生成的系统和方法
公开(公告)号：US08059762B2
公开(公告)日：2011-11-15
申请号：US12603192
申请日：2009-10-21
申请人： Ahmed Said , Varadanarayanan Mugundhan , Elias Nemer , Gregory R. Goslin
发明人： Ahmed Said , Varadanarayanan Mugundhan , Elias Nemer , Gregory R. Goslin
IPC分类号： H04L27/06
CPC分类号： H04L25/0307 , H04L1/0045 , H04L1/006 , H04L25/067
摘要： According to some embodiments, an input symbol may be received, and a hard symbol may be generated from the input symbol. A probability associated with the hard symbol may be calculated along with a probability associated with a previous hard symbol. An enhanced symbol may then be determined as a function of a comparison between the probability associated the hard symbol and the previous hard symbol.
摘要翻译：根据一些实施例，可以接收输入符号，并且可以从输入符号生成硬符号。与硬符号相关联的概率可以与与先前硬符号相关联的概率一起被计算。然后可以根据与硬符号和先前硬符号相关联的概率之间的比较来确定增强符号。

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