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1. 发明授权

US08150065B2 System and method for processing an audio signal 有权
标题翻译：用于处理音频信号的系统和方法
公开(公告)号：US08150065B2
公开(公告)日：2012-04-03
申请号：US11441675
申请日：2006-05-25
申请人： Ludger Solbach , Lloyd Watts
发明人： Ludger Solbach , Lloyd Watts
IPC分类号： H03G5/00
CPC分类号： G10L19/0204 , H04R25/505 , H04R2430/03
摘要： Systems and methods for audio signal processing are provided. In exemplary embodiments, a filter cascade of complex-valued filters are used to decompose an input audio signal into a plurality of frequency components or sub-band signals. These sub-band signals may be processed for phase alignment, amplitude compensation, and time delay prior to summation of real portions of the sub-band signals to generate a reconstructed audio signal.
摘要翻译：提供音频信号处理的系统和方法。在示例性实施例中，复值滤波器的滤波器级联用于将输入音频信号分解为多个频率分量或子带信号。在对子带信号的实部进行求和之前，可以对这些子带信号进行相位对准，幅度补偿和时间延迟处理，以产生重构的音频信号。

2. 发明申请

US20070276656A1 System and method for processing an audio signal 有权
标题翻译：用于处理音频信号的系统和方法
公开(公告)号：US20070276656A1
公开(公告)日：2007-11-29
申请号：US11441675
申请日：2006-05-25
申请人： Ludger Solbach , Lloyd Watts
发明人： Ludger Solbach , Lloyd Watts
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , H04R25/505 , H04R2430/03
摘要： Systems and methods for audio signal processing are provided. In exemplary embodiments, a filter cascade of complex-valued filters are used to decompose an input audio signal into a plurality of frequency components or sub-band signals. These sub-band signals may be processed for phase alignment, amplitude compensation, and time delay prior to summation of real portions of the sub-band signals to generate a reconstructed audio signal.
摘要翻译：提供音频信号处理的系统和方法。在示例性实施例中，复值滤波器的滤波器级联用于将输入音频信号分解为多个频率分量或子带信号。在对子带信号的实部进行求和之前，可以对这些子带信号进行相位对准，幅度补偿和时间延迟处理，以产生重构的音频信号。

3. 发明申请

US20120140951A1 System and Method for Processing an Audio Signal 审中-公开
标题翻译：用于处理音频信号的系统和方法
公开(公告)号：US20120140951A1
公开(公告)日：2012-06-07
申请号：US13397597
申请日：2012-02-15
申请人： Ludger Solbach , Lloyd Watts
发明人： Ludger Solbach , Lloyd Watts
IPC分类号： H04B15/00
CPC分类号： G10L19/0204 , H04R25/505 , H04R2430/03
摘要： Systems and methods for audio signal processing are provided. In exemplary embodiments, a filter cascade of complex-valued filters are used to decompose an input audio signal into a plurality of frequency components or sub-band signals. These sub-band signals may be processed for phase alignment, amplitude compensation, and time delay prior to summation of real portions of the sub-band signals to generate a reconstructed audio signal.
摘要翻译：提供音频信号处理的系统和方法。在示例性实施例中，复值滤波器的滤波器级联用于将输入音频信号分解为多个频率分量或子带信号。在对子带信号的实部进行求和之前，可以对这些子带信号进行相位对准，幅度补偿和时间延迟处理，以产生重构的音频信号。

4. 发明授权

US09142010B2 Image enhancement based on combining images from multiple cameras 有权
标题翻译：基于多个相机的图像组合的图像增强
公开(公告)号：US09142010B2
公开(公告)日：2015-09-22
申请号：US13738874
申请日：2013-01-10
申请人： Lloyd Watts , Carver Mead
发明人： Lloyd Watts , Carver Mead
IPC分类号： H04N13/02 , G06T5/00 , H04N5/262 , H04N5/225 , G06T5/50
CPC分类号： H04N5/2621 , G06K9/00228 , G06K9/00234 , G06T5/006 , G06T5/50 , G06T15/04 , G06T2207/10012 , G06T2207/20221 , G06T2207/30201 , H04N5/2258 , H04N5/265 , H04N9/74
摘要： Provided are systems and methods for image enhancement based on combining multiple related images, such as images of the same object taken from different imaging angles. This approach allows simulating images captured from longer distances using telephoto lenses. Initial images may be captured using simple cameras equipped with shorter focal length lenses, typically used on camera phones, tablets, and laptops. The initial images may be taken using two different cameras positioned a certain distance from each other. An object or, more specifically, a center line of the object is identified in each image. The object is typically present in the foreground portion of the initial images. The initial images may be cross-faded along the object center line to yield a combined image. Separating of the foreground and background portions of each image may be separated and separately processed, such as blurring the background portion and sharpening the foreground portion.
摘要翻译：提供了基于组合多个相关图像的图像增强的系统和方法，例如从不同成像角度拍摄的相同对象的图像。这种方法允许使用长焦镜头模拟从较长距离捕获的图像。初始图像可以使用配备较短焦距镜头的简单相机进行拍摄，通常用于相机手机，平板电脑和笔记本电脑。可以使用彼此相距一定距离的两个不同的摄像机拍摄初始图像。在每个图像中识别对象或更具体地，对象的中心线。该对象通常存在于初始图像的前景部分中。初始图像可能沿对象中心线交叉褪色以产生组合图像。每个图像的前景和背景部分的分离可以被分离和分开处理，例如模糊背景部分和锐化前景部分。

5. 发明授权

US08345890B2 System and method for utilizing inter-microphone level differences for speech enhancement 有权
标题翻译：用于语音增强的麦克风间差分级的系统和方法
公开(公告)号：US08345890B2
公开(公告)日：2013-01-01
申请号：US11343524
申请日：2006-01-30
申请人： Carlos Avendano , Peter Santos , Lloyd Watts
发明人： Carlos Avendano , Peter Santos , Lloyd Watts
IPC分类号： H04B15/00
CPC分类号： H04R3/002 , G10L21/0208 , H04R1/406 , H04R3/005 , H04R2410/01 , H04R2430/20 , H04R2499/11
摘要： Systems and methods for utilizing inter-microphone level differences to attenuate noise and enhance speech are provided. In exemplary embodiments, energy estimates of acoustic signals received by a primary microphone and a secondary microphone are determined in order to determine an inter-microphone level difference (ILD). This ILD in combination with a noise estimate based only on a primary microphone acoustic signal allow a filter estimate to be derived. In some embodiments, the derived filter estimate may be smoothed. The filter estimate is then applied to the acoustic signal from the primary microphone to generate a speech estimate.
摘要翻译：提供了利用麦克风间差异来衰减噪声和增强语音的系统和方法。在示例性实施例中，确定由主麦克风和次麦克风接收的声信号的能量估计，以便确定麦克风间级差（ILD）。该ILD与仅基于主麦克风声信号的噪声估计结合使得能够导出滤波器估计。在一些实施例中，导出的滤波器估计可以被平滑。然后将滤波器估计值应用于来自主麦克风的声信号以产生语音估计。

6. 发明申请

US20110178800A1 Distortion Measurement for Noise Suppression System 审中-公开
标题翻译：噪声抑制系统的失真测量
公开(公告)号：US20110178800A1
公开(公告)日：2011-07-21
申请号：US12944659
申请日：2010-11-11
申请人： Lloyd Watts
发明人： Lloyd Watts
IPC分类号： G10L15/20
CPC分类号： G10L21/0208
摘要： The present technology measures distortion introduced by a noise suppression system. The distortion may be measured as the difference between a noise-reduced speech signal and an estimated idealized noise reduced reference (EINRR). The EINRR may be determined from a speech component and noise component that are pre-processed, and the EINRR may be used with masks associated with energies lost and added in the speech component and noise component. The EINRR may be calculated on a time varying basis.
摘要翻译：本技术测量噪声抑制系统引入的失真。可以将失真测量为噪声降低的语音信号和估计的理想化噪声减小参考（EINRR）之间的差。 EINRR可以从预处理的语音分量和噪声分量确定，并且EINRR可以与与在语音分量和噪声分量中丢失和添加的能量相关联的掩模使用。 EINRR可以按时间差异计算。

7. 发明授权

US08032364B1 Distortion measurement for noise suppression system 有权
标题翻译：噪声抑制系统的失真测量
公开(公告)号：US08032364B1
公开(公告)日：2011-10-04
申请号：US13016916
申请日：2011-01-28
申请人： Lloyd Watts
发明人： Lloyd Watts
IPC分类号： G10L21/02
CPC分类号： G10L21/0208
摘要： The present technology measures distortion introduced by a noise suppression system. The distortion may be measured as the difference between a noise-reduced speech signal and an estimated idealized noise reduced reference (EINRR). The EINRR may be determined from a speech component and noise component that are pre-processed, and the EINRR may be used with masks associated with energies lost and added in the speech component and noise component. The EINRR may be calculated on a time varying basis.
摘要翻译：本技术测量噪声抑制系统引入的失真。可以将失真测量为噪声降低的语音信号和估计的理想化噪声减小参考（EINRR）之间的差。 EINRR可以从预处理的语音分量和噪声分量确定，并且EINRR可以与与在语音分量和噪声分量中丢失和添加的能量相关联的掩模使用。 EINRR可以按时间差异计算。

8. 发明申请

US20050228518A1 FILTER SET FOR FREQUENCY ANALYSIS 审中-公开
标题翻译：频率分析滤波器
公开(公告)号：US20050228518A1
公开(公告)日：2005-10-13
申请号：US10074991
申请日：2002-02-13
申请人： Lloyd Watts
发明人： Lloyd Watts
IPC分类号： H03H17/02 , H03H17/04 , G06F17/00
CPC分类号： H03H17/02 , G10L25/18 , H03H17/04
摘要： A system and method are disclosed for analyzing an input signal into a plurality of frequency components. In one embodiment, the input signal is processed with a first set of low pass filters to derive a first set of frequency components wherein the first set of low pass filters are arranged serially in a chain having a first low pass filter and a last low pass filter, the output of each low pass filter being fed to the next low pass filter in the chain until the last low pass filter. The output of the last low pass filter is downsampled to produce a downsampled signal. The downsampled signal is processed with a second set of low pass filters to derive a second set of frequency components.
摘要翻译：公开了一种用于将输入信号分解为多个频率分量的系统和方法。在一个实施例中，输入信号用第一组低通滤波器处理以导出第一组频率分量，其中第一组低通滤波器串联布置在具有第一低通滤波器和最后低通滤波器的链中滤波器，每个低通滤波器的输出被馈送到链中的下一个低通滤波器，直到最后一个低通滤波器。最后一个低通滤波器的输出被下采样以产生下采样信号。下采样信号用第二组低通滤波器处理以导出第二组频率分量。

9. 发明授权

US08488805B1 Providing background audio during telephonic communication 有权
标题翻译：在电话通信过程中提供背景音频
公开(公告)号：US08488805B1
公开(公告)日：2013-07-16
申请号：US12649121
申请日：2009-12-29
申请人： Peter Santos , Lloyd Watts , Carlo Murgia , Brian Clark
发明人： Peter Santos , Lloyd Watts , Carlo Murgia , Brian Clark
IPC分类号： H04B3/00 , H04M1/00
CPC分类号： H04M9/08 , H04M1/6016 , H04M1/72522 , H04M1/72558 , H04M2203/352
摘要： Background audio can be provided during telephonic communication. Telephonic communication can be established via a network, such as between a user of a telephony device and a communication partner having a second telephony device. A voice signal may be received from the user via a microphone integral with the telephony device. An audio track can be retrieved, for example, from memory integral with the telephony device or from a third-party service provider via the communications network. Noise reduction is performed on the voice signal to produce a clean voice signal. The clean voice signal may be combined with the audio track to produce a combined signal, such that the audio track provides background audio to the clean voice signal. The combined signal can then be transmitted from the telephony device to the second telephony device via the communications network.
摘要翻译：可以在电话通信期间提供背景音频。电话通信可以经由诸如电话设备的用户和具有第二电话设备的通信对方之间的网络来建立。可以经由与电话设备集成的麦克风从用户接收语音信号。可以例如从与电话设备集成的存储器或经由通信网络从第三方服务提供商检索音频轨道。对语音信号进行降噪以产生干净的语音信号。干净的语音信号可以与音频轨道组合以产生组合的信号，使得音频轨道向干净的语音信号提供背景音频。然后可以经由通信网络将组合的信号从电话设备发送到第二电话设备。

10. 发明申请

US20060072766A1 Reverberation removal 有权
公开(公告)号：US20060072766A1
公开(公告)日：2006-04-06
申请号：US10959408
申请日：2004-10-05
申请人： David Klein , Lloyd Watts
发明人： David Klein , Lloyd Watts
IPC分类号： H04B3/20 , H04M9/08
CPC分类号： H04M9/082
摘要： A method of removing reverberation from audio signals is disclosed. The method comprises spectro-temporally analyzing the first audio signal and the second audio signal to derive an energy function of time for a plurality of frequency bands. The method further comprises determining a delay stability between the energy function of time for the first audio signal and the second audio signal in each band, determining a gain function in each band based on the delay stability, adjusting the energy of the first audio signal and the second audio signal using the gain function within each band, and resynthesizing audio signals from the energy in each band of the first audio signal and the second audio signal.

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