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1. 发明申请

WO2007140003A2 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：WO2007140003A2
公开(公告)日：2007-12-06
申请号：PCT/US2007/012628
申请日：2007-05-24
申请人： AUDIENCE, INC. , SOLBACH, Ludger , WATTS, Lloyd
发明人： SOLBACH, Ludger , WATTS, Lloyd
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。

2. 发明申请

WO2006041735A2 REVERBERATION REMOVAL 审中-公开
标题翻译：重新删除
公开(公告)号：WO2006041735A2
公开(公告)日：2006-04-20
申请号：PCT/US2005/035314
申请日：2005-09-30
申请人： AUDIENCE, INC. , KLEIN, David , WATTS, Lloyd
发明人： KLEIN, David , WATTS, Lloyd
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.
摘要翻译：公开了一种从音频信号中去除混响的方法。所述方法包括对所述第一音频信号和所述第二音频信号进行频谱分析以导出多个频带的时间的能量函数。该方法还包括确定第一音频信号的时间的能量函数与每个频带中的第二音频信号之间的延迟稳定性，基于延迟稳定性来确定每个频带中的增益函数，调整第一音频信号的能量，以及所述第二音频信号使用每个频带内的增益函数，以及从所述第一音频信号和所述第二音频信号的每个频带中的能量重新合成音频信号。

3. 发明申请

WO2011091068A1 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：WO2011091068A1
公开(公告)日：2011-07-28
申请号：PCT/US2011/021756
申请日：2011-01-19
申请人： AUDIENCE, INC. , WATTS, Lloyd
发明人： WATTS, Lloyd
IPC分类号： G01R13/00
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。

4. 发明申请

WO2006128107A3 SYSTEMS AND METHODS FOR AUDIO SIGNAL ANALYSIS AND MODIFICATION 审中-公开
公开(公告)号：WO2006128107A3
公开(公告)日：2006-11-30
申请号：PCT/US2006/020737
申请日：2006-05-30
申请人： AUDIENCE, INC. , KLEIN, David , MALINOWSKI, Stephen , WATTS, Lloyd , MONT-REYNAUD, Bernard
发明人： KLEIN, David , MALINOWSKI, Stephen , WATTS, Lloyd , MONT-REYNAUD, Bernard
IPC分类号： G10L15/00
摘要： Systems and methods for modification of an audio input signal are provided. In exemplary embodiments, an adaptive multiple-model optimizer (110) is configured to generate at least one source model parameter for facilitating modification of an analyzed signal. The adaptive multiple-model optimizer (1 10) comprises a segment grouping engine (302) and a source grouping engine. The segment grouping engine (302) is configured to group simultaneous features segments to generate at least one segment model (306). The at least one segment model (306) is used by the source grouping engine to generate at least one source model (308), which comprises the at least one source model parameter. Control signals for modification of the analyzed signal may then be generated based on the at least one source model parameter.

5. 发明申请

WO2003043374A1 COMPUTATION OF MULTI-SENSOR TIME DELAYS 审中-公开
标题翻译：多传感器时间延迟的计算
公开(公告)号：WO2003043374A1
公开(公告)日：2003-05-22
申请号：PCT/US2002/036946
申请日：2002-11-14
申请人： AUDIENCE, INC.
发明人： WATTS, Lloyd
IPC分类号： H04R5/00
CPC分类号： H04R3/005 , H04R2201/403
摘要： Determining a time delay between a first signal received at a first sensor and a second signal received at a second sensor is described. The first signal is analyzed (204) to derive a plurality of first signal channels at different frequencies and the second signal is analyzed (204) to derive a plurality of second signal channels at different frequencies. A first feature detected (208) taht occurs at a first time in one of the first signal channels. A second feature is detected (208) that occurs at a second time in one of the second signal channels. The first feature is matched with the second feature and the first time is compared to the second time (220) to determine the time delay.
摘要翻译：确定在第一传感器处接收的第一信号与在第二传感器处接收的第二信号之间的时间延迟。分析第一信号（204）以导出不同频率的多个第一信号信道，并且分析第二信号（204）以导出不同频率的多个第二信号信道。检测到的第一特征（208）发生在第一信号信道之一中的第一时间。检测到第二特征（208），其在第二信号信道之一中发生在第二时间。第一个特征与第二个特征匹配，并且第一个时间与第二个时间（220）进行比较以确定时间延迟。

6. 发明申请

WO2013112295A1 IMAGE ENHANCEMENT BASED ON COMBINING IMAGES FROM MULTIPLE CAMERAS 审中-公开
标题翻译：基于多个摄像机组合图像的图像增强
公开(公告)号：WO2013112295A1
公开(公告)日：2013-08-01
申请号：PCT/US2013/021078
申请日：2013-01-10
申请人： AUDIENCE, INC.
发明人： WATTS, Lloyd , MEAD, Carver
IPC分类号： G06K9/00
CPC分类号： H04N7/142 , G06T5/001 , G06T5/50 , G06T7/194 , G06T2207/10012 , G06T2207/20221 , H04N5/23219 , H04N5/23229
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。

7. 发明申请

WO2013103523A1 IMAGE ENHANCEMENT METHODS AND SYSTEMS 审中-公开
标题翻译：图像增强方法和系统
公开(公告)号：WO2013103523A1
公开(公告)日：2013-07-11
申请号：PCT/US2012/070417
申请日：2012-12-18
申请人： AUDIENCE, INC.
发明人： WATTS, Lloyd
IPC分类号： H04N13/02
CPC分类号： G06K9/40 , G06K9/46 , G06T5/002 , G06T5/50 , G06T7/11 , G06T7/174 , G06T7/194 , G06T2207/10012 , G06T2207/10016 , G06T2207/20012 , H04N13/239
摘要： Provided are computer-implemented systems and methods for image enhancement using one or more image processing techniques, such as stereo disparity, facial recognition, and other like features. An image may be captured using one or two cameras provided on the same device. The image is then processed to detect at least one of a foreground portion or a background portion of the image. These portions are then processed independently from each other, for example, to enhance the foreground and/or blur the background. For example, a circular blur or a Gaussian blur technique may be applied to the background. The processing may be performed on still images and/or video images, such as live teleconferences. The processing may be performed on an image capturing device, such as a mobile phone, a tablet computer, or a laptop computer, or performed on a back-end system.
摘要翻译：提供了使用一个或多个图像处理技术（诸如立体视差，面部识别和其他类似特征）的用于图像增强的计算机实现的系统和方法。可以使用设置在同一设备上的一个或两个摄像机捕获图像。然后处理图像以检测图像的前景部分或背景部分中的至少一个。然后，这些部分彼此独立地进行处理，例如以增强背景的前景和/或模糊。例如，可以将圆形模糊或高斯模糊技术应用于背景。可以对静止图像和/或视频图像执行处理，诸如实时电话会议。处理可以在诸如移动电话，平板电脑或膝上型计算机的图像捕获设备上执行，或者在后端系统上执行。

8. 发明申请

WO2003069499A1 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：WO2003069499A1
公开(公告)日：2003-08-21
申请号：PCT/US2003/004124
申请日：2003-02-11
申请人： AUDIENCE, INC.
发明人： WATTS, Lloyd
IPC分类号： 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 (100) into a plurality of frequency components. In one embodiment, the input signal (100) is processed with a first set of low pass filters (102-132) to derive a first set of frequency components wherein the first set of low pass filters (102-132) are arranged serially in a chain having a first low pass filter (102) and a last low pass filter (132), the output of each low pass filter being fed to the next low pass filter in the chain until the last low pass filter (132). The output of the last low pass filter (132) is downsampled (140) to produce a downsampled signal. The downsampled signal is processed with a second set of low pass filters (142-172) to derive a second set of frequency components.
摘要翻译：公开了一种用于将输入信号（100）分解为多个频率分量的系统和方法。在一个实施例中，用第一组低通滤波器（102-132）对输入信号（100）进行处理，以导出第一组频率分量，其中第一组低通滤波器（102-132）被串行布置具有第一低通滤波器（102）和最后一个低通滤波器（132）的链路，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，直到最后的低通滤波器（132）为止。最后一个低通滤波器（132）的输出被下采样（140）以产生下采样信号。下采样信号用第二组低通滤波器（142-172）处理以得到第二组频率分量。

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