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1. 发明申请

WO2004111994A3 METHOD, APPARATUS AND COMPUTER PROGRAM FOR CALCULATING AND ADJUSTING THE PERCEIVED LOUDNESS OF AN AUDIO SIGNAL 审中-公开
公开(公告)号：WO2004111994A3
公开(公告)日：2004-12-23
申请号：PCT/US2004/016964
申请日：2004-05-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SEEFELDT, Alan, Jeffrey , SMITHERS, Michael, J. , CROCKETT, Brett, Graham
发明人： SEEFELDT, Alan, Jeffrey , SMITHERS, Michael, J. , CROCKETT, Brett, Graham
IPC分类号： G10L11/00
摘要： One or a combination of two or more specific loudness model functions selected from a group of two or more of such functions are employed in calculating the perceptual loudness of an audio signal. The function or functions may be selected, for example, by a measure of the degree to which the audio signal is narrowband or wideband. Alternatively or with such a selection from a group of functions, a gain value G [t] is calculated, which gain, when applied to the audio signal, results in a perceived loudness substantially the same as a reference loudness. The gain calculating employs an iterative processing loop that includes the perceptual loudness calculation.

2. 发明申请

WO2010127024A1 CONTROLLING THE LOUDNESS OF AN AUDIO SIGNAL IN RESPONSE TO SPECTRAL LOCALIZATION 审中-公开
标题翻译：控制音频信号对频谱定位的响应
公开(公告)号：WO2010127024A1
公开(公告)日：2010-11-04
申请号：PCT/US2010/032807
申请日：2010-04-28
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SMITHERS, Michael, J.
发明人： SMITHERS, Michael, J.
IPC分类号： H03G9/02
CPC分类号： H03G9/025 , H03G9/005
摘要： The invention relates to modifying the loudness of an audio signal by measuring the weighted broadband level of the audio signal and modifying that weighted broadband level as a function of a spectral localization estimate of the audio signal.
摘要翻译：本发明涉及通过测量音频信号的加权宽带电平来修改音频信号的响度，并根据音频信号的频谱定位估计修改该加权宽带电平。

3. 发明申请

WO2002097791A1 METHOD FOR TIME ALIGNING AUDIO SIGNALS USING CHARACTERIZATIONS BASED ON AUDITORY EVENTS 审中-公开
标题翻译：使用基于审计活动的特征的时间对准音频信号的方法
公开(公告)号：WO2002097791A1
公开(公告)日：2002-12-05
申请号：PCT/US2002/005806
申请日：2002-02-25
申请人： DOLBY LABORATORIES LICENSING CORPORATION , CROCKETT, Brett, G. , SMITHERS, Michael, J.
发明人： CROCKETT, Brett, G. , SMITHERS, Michael, J.
IPC分类号： G10L11/00
CPC分类号： H04N5/04 , G06K9/00536 , G10L15/04 , G10L17/26 , G10L19/018 , G10L21/04 , G10L25/48 , H04N5/60 , H04N21/233 , H04N21/4307 , H04N21/8455
摘要： A method for time aligning audio signal, wherein one signal has been derived from the other or both have been derived from another signal, comprises deriving reduced-information characterizations of the audio signals, auditory scene analysis. The time offset of one characterization with respect to the other characterizationis calculated and the temporal relationship of the audio signals with respect to each other is modified in response to the time offset such that the audio signals are coicident with each other. These principles may also be applied to a method for time aligning a video signal and an audio signal that will be subjected to differential time offsets.
摘要翻译：一种用于时间对准音频信号的方法，其中一个信号已经从另一个导出，或者两者已经从另一个信号导出，包括导出音频信号的缩减信息表征，听觉场景分析。计算相对于其他表征的一个表征的时间偏移和音频信号相对于彼此的时间关系是响应于时间偏移而被修改的，使得音频信号彼此共同。这些原理也可以应用于时间对准视频信号和将经受差分时间偏移的音频信号的方法。

4. 发明申请

WO2010075377A1 AUDIO SIGNAL LOUDNESS DETERMINATION AND MODIFICATION IN THE FREQUENCY DOMAIN 审中-公开
标题翻译：音频信号在频域中的确定和修改
公开(公告)号：WO2010075377A1
公开(公告)日：2010-07-01
申请号：PCT/US2009/069178
申请日：2009-12-22
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SMITHERS, Michael J.
发明人： SMITHERS, Michael J.
IPC分类号： H03G9/02
CPC分类号： H03G9/005 , G10L19/0204 , G10L19/022 , H03G9/025
摘要： Methods of, apparatuses for, and computer readable media having instructions thereon that when executed cause carrying out methods of determining and modifying the perceived loudness of a frequency domain audio signal where the frequency resolution, and corresponding temporal coverage of the frequency domain information is not constant. The frequency (and thus temporal) resolution of the perceived loudness processing is maintained constant at the longest block size. One method includes a block combiner and a loudness modification interpolator.
摘要翻译：具有指令的装置和计算机可读介质的方法，当执行时，其执行导致执行确定和修改频域音频信号的感知响度的方法，其中频域信息的频率分辨率和对应的时域覆盖不是常数。感知响度处理的频率（和时间）分辨率保持恒定在最长的块大小。一种方法包括块组合器和响度修改内插器。

5. 发明申请

WO2005050651A1 FRAME BASED AUDIO TRANSMISSION/STORAGE WITH OVERLAP TO FACILITATE SMOOTH CROSSFADING 审中-公开
标题翻译：基于帧的音频传输/存储与覆盖以帮助平滑交叉
公开(公告)号：WO2005050651A1
公开(公告)日：2005-06-02
申请号：PCT/US2004/036950
申请日：2004-11-04
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SMITHERS, Michael, J. , GUNDRY, Kenneth, James
发明人： SMITHERS, Michael, J. , GUNDRY, Kenneth, James
IPC分类号： G11B27/038
CPC分类号： G10H7/008 , G10H2250/035 , G11B20/10527 , G11B20/24 , G11B27/038
摘要： Method for splicing PCM audio frames form modified frames by appending to each frame either a portion of the next preceding frame or the next following frame. According to a first approach, splices are obtained by fading up and fading down a frame end and a frame appendage only at a splice point, and overlapping and combining to provide a crossfade at the splice. Alternatively, every frame end and frame appendage is faded up and faded down, overlapped and combined. A subtractive method of providing complementary fade-up and fade-down reduces rounding errors.
摘要翻译：通过将下一个前一帧或下一个后续帧的一部分附加到每个帧来拼接PCM音频帧的方法形成修改的帧。根据第一种方法，通过仅在接合点处对帧末端和帧附属物进行渐变和衰落而获得接合，并且重叠和组合以在接头处提供交叉渐变。或者，每个帧结束和帧附件被淡化和淡化，重叠和组合。提供补充淡化和淡化的减法方法可减少舍入误差。

6. 发明申请

WO02097790A8 COMPARING AUDIO USING CHARACTERIZATIONS BASED ON AUDITORY EVENTS 审中-公开
标题翻译：使用基于审计活动的特征比较音频
公开(公告)号：WO02097790A8
公开(公告)日：2003-07-31
申请号：PCT/US0205329
申请日：2002-02-22
申请人： DOLBY LAB LICENSING CORP , CROCKETT BRETT G , SMITHERS MICHAEL J
发明人： CROCKETT BRETT G , SMITHERS MICHAEL J
IPC分类号： G06K9/00 , G10L15/04 , G10L17/26 , G10L21/04 , G10L25/00 , G10L25/48 , H03M7/30 , H04N5/04 , H04N5/60 , G10L11/00
CPC分类号： G06K9/00536 , G10L15/04 , G10L17/26 , G10L21/04 , G10L25/00 , G10L25/48 , H04N5/04 , H04N5/60
摘要： A method for determining if one audio signal is derived from another audio signal or if two audio signals are derived from the same audio signal compares reduced-information characterizations of said audio signals, wherein said characterizations are based on auditory scene analysis. The comparison removes from the characterisations or minimizes in the characterisations the effect of temporal shift or delay on the audio signals(5-1), calculates a measure of similarity(5-2), and compares the measure of similarity against a threshold. In one alternative, the effect of temporal shift or delay is removed or minimized by cross-correlating the two characterizations. In another alternative, the effect of temporal shift or delay is removed or minimized by transforming the characterizations into a domain that is independent of temporal delay effects, such as the frequency domain. In both cases, a measure of similarity is calculated by calculating a coefficient of correlation.
摘要翻译：一种用于确定一个音频信号是否从另一音频信号导出的方法，或者如果从相同音频信号导出两个音频信号，则比较所述音频信号的缩减信息表征，其中所述表征是基于听觉场景分析。该比较从特征中消除或者最小化了时间偏移或延迟对音频信号（5-1）的影响的特性，计算相似性度量（5-2），并将相似性度量与阈值进行比较。在一个替代方案中，通过将两个表征相互关联来消除或最小化时间偏移或延迟的影响。在另一替代方案中，通过将表征转换成独立于时间延迟效应的域（例如频域）来消除或最小化时间偏移或延迟的影响。在这两种情况下，通过计算相关系数来计算相似度。

7. 发明申请

WO2002097790A1 COMPARING AUDIO USING CHARACTERIZATIONS BASED ON AUDITORY EVENTS 审中-公开
标题翻译：使用基于审计活动的特征比较音频
公开(公告)号：WO2002097790A1
公开(公告)日：2002-12-05
申请号：PCT/US2002/005329
申请日：2002-02-22
申请人： DOLBY LABORATORIES LICENSING CORPORATION , CROCKETT, Brett, G. , SMITHERS, Michael, J.
发明人： CROCKETT, Brett, G. , SMITHERS, Michael, J.
IPC分类号： G10L11/00
CPC分类号： G06K9/00536 , G10L15/04 , G10L17/26 , G10L21/04 , G10L25/00 , G10L25/48 , H04N5/04 , H04N5/60
摘要： A method for determining if one audio signal is derived from another audio signal or if two audio signals are derived from the same audio signal compares reduced-information characterizations of said audio signals, wherein said characterizations are based on auditory scene analysis. The comparison removes from the characterisations or minimizes in the characterisations the effect of temporal shift or delay on the audio signals(5-1), calculates a measure of similarity(5-2), and compares the measure of similarity against a threshold. In one alternative, the effect of temporal shift or delay is removed or minimized by cross-correlating the two characterizations. In another alternative, the effect of temporal shift or delay is removed or minimized by transforming the characterizations into a domain that is independent of temporal delay effects, such as the frequency domain. In both cases, a measure of similarity is calculated by calculating a coefficient of correlation.
摘要翻译：一种用于确定一个音频信号是否从另一音频信号导出的方法，或者如果从相同音频信号导出两个音频信号，则比较所述音频信号的缩减信息表征，其中所述表征是基于听觉场景分析。该比较从特征中消除或者最小化了时间偏移或延迟对音频信号（5-1）的影响的特性，计算相似性度量（5-2），并将相似性度量与阈值进行比较。在一个替代方案中，通过将两个表征相互关联来消除或最小化时间偏移或延迟的影响。在另一替代方案中，通过将表征转换成独立于时间延迟效应的域（例如频域）来消除或最小化时间偏移或延迟的影响。在这两种情况下，通过计算相关系数来计算相似度。

8. 发明申请

WO2005073960A1 IMPROVED CODING TECHNIQUES USING ESTIMATED SPECTRAL MAGNITUDE AND PHASE DERIVED FROM MDCT COEFFICIENTS 审中-公开
标题翻译：改进的编码技术使用估计的光谱和相位从MDCT系数
公开(公告)号：WO2005073960A1
公开(公告)日：2005-08-11
申请号：PCT/US2005/001499
申请日：2005-01-14
申请人： DOLBY LABORATORIES LICENSING CORPORATION , CHENG, Corey, I. , SMITHERS, Michael, J. , LATHROP, David, N.
发明人： CHENG, Corey, I. , SMITHERS, Michael, J. , LATHROP, David, N.
IPC分类号： G10L19/02
CPC分类号： G06F17/147 , G10L19/0212
摘要： Estimates of spectral magnitude and phase are obtained by an estimation process using spectral information from analysis filter banks such as the Modified Discrete Cosine Transform. The estimation process may be implemented by convolution-like operations with impulse responses. Portions of the impulses responses may be selected for use in the convolution-like operations to trade off between computational complexity and estimation accuracy. Mathematical derivations of analytical expressions for filter structures and impulse responses are disclosed.
摘要翻译：通过使用来自分析滤波器组的光谱信息的估计处理（诸如修改的离散余弦变换）来获得频谱幅度和相位的估计。估计过程可以通过具有脉冲响应的卷积状操作来实现。可以选择脉冲响应的部分用于卷积状操作以在计算复杂度和估计精度之间进行折衷。公开了滤波器结构和脉冲响应的解析表达式的数学推导。

9. 发明申请

WO2004111994A2 METHOD, APPARATUS AND COMPUTER PROGRAM FOR CALCULATING AND ADJUSTING THE PERCEIVED LOUDNESS OF AN AUDIO SIGNAL 审中-公开
标题翻译：用于计算和调整音频信号感知的方法，装置和计算机程序
公开(公告)号：WO2004111994A2
公开(公告)日：2004-12-23
申请号：PCT/US2004016964
申请日：2004-05-27
申请人： DOLBY LAB LICENSING CORP , SEEFELDT ALAN JEFFREY , SMITHERS MICHAEL J , CROCKETT BRETT GRAHAM
发明人： SEEFELDT ALAN JEFFREY , SMITHERS MICHAEL J , CROCKETT BRETT GRAHAM
IPC分类号： G10L11/00 , H03G9/02 , G10L
CPC分类号： H03G9/005 , G10L25/48 , H03G5/00 , H03G5/005 , H03G9/025
摘要： One or a combination of two or more specific loudness model functions selected from a group of two or more of such functions are employed in calculating the perceptual loudness of an audio signal. The function or functions may be selected, for example, by a measure of the degree to which the audio signal is narrowband or wideband. Alternatively or with such a selection from a group of functions, a gain value G[t] is calculated, which gain, when applied to the audio signal, results in a perceived loudness substantially the same as a reference loudness. The gain calculating employs an iterative processing loop that includes the perceptual loudness calculation.
摘要翻译：在计算音频信号的感知响度时，采用从这些功能中的两个或更多个组中选出的两个或更多个特定响度模型函数中的一个或更多组合。功能或功能可以例如通过音频信号是窄带或宽带的程度的度量来选择。或者或通过一组功能的这种选择，计算增益值G [t]，当应用于音频信号时，增益值导致与基准响度基本相同的感知响度。增益计算采用包括感知响度计算的迭代处理循环。

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