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1. 发明申请

WO2007106324A1 RENDERING CENTER CHANNEL AUDIO 审中-公开
标题翻译：渲染中心频道音频
公开(公告)号：WO2007106324A1
公开(公告)日：2007-09-20
申请号：PCT/US2007/004904
申请日：2007-02-23
申请人： DOLBY LABORATORIES LICENSING CORPORATION , VINTON, Mark, Stuart
发明人： VINTON, Mark, Stuart
IPC分类号： H04S5/00
CPC分类号： H04S5/00 , H04S2400/05
摘要： An audio upmixer, such as a two-channel to three-channel upmixer, employs a difference in a measure of sound at the ears of a listener in accordance with first and second models, one based on a reproduction of the original channels and the other based on a reproduction of the upmixed channels. The difference is minimized while simultaneously causing a. portion of one or more of the stereophonic channels to be applied to the center loudspeaker under some conditions of the signals in the stereophonic channels, the portion being commensurate with the value of a weighting factor, such that the weighting factor controls a balance between two opposing conditions, one in which no signals are applied to the center loudspeaker and another in which no signals are applied to the left and right loudspeakers.
摘要翻译：诸如双通道到三通道上混频器的音频上混器根据第一和第二模型在收听者的耳朵处使用声音的差异，一个基于原始声道的再现，另一个基于上混频道的再现。差异最小化同时导致a。在立体声通道中的信号的某些条件下将一个或多个立体声通道施加到中心扬声器的部分，该部分与加权因子的值相称，使得加权因子控制两个相对的条件，其中没有信号施加到中央扬声器，另一个不向左和右扬声器施加信号。

2. 发明申请

WO2006026452A1 MULTICHANNEL DECORRELATION IN SPATIAL AUDIO CODING 审中-公开
标题翻译：空间音频编码中的多通道装饰
公开(公告)号：WO2006026452A1
公开(公告)日：2006-03-09
申请号：PCT/US2005/030453
申请日：2005-08-24
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SEEFELDT, Alan, Jeffrey , VINTON, Mark, Stuart
发明人： SEEFELDT, Alan, Jeffrey , VINTON, Mark, Stuart
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： Each of N audio signals are filtered with a unique decorrelating filter (38) characteristic, the characteristic being a causal linear time-invariant characteristic in the time domain or the equivalent thereof in the frequency domain, and, for each decorrelating filter characteristic, combining (40, 44, 46), in a time and frequency varying manner, its input (Zi) and output (Z-i) signals to provide a set of N processed signals (X i). The set of decorrelation filter characteristics are designed so that all of the input and output signals are approximately mutually decorrelated. The set of N audio signals may be synthesized from M audio signals by upmixing (36), where M is one or more and N is greater than M.
摘要翻译：每个N个音频信号用唯一的去相关滤波器（38）特性进行滤波，该特性是时域中的因果线性时间不变特性或其在频域中的等效特性，并且对于每个去相关滤波器特性，组合（ 40,44,46），以时间和频率变化的方式，其输入（Zi）和输出（Zi）信号以提供一组N个处理信号（X i）。设计了一组去相关滤波器特性，使得所有的输入和输出信号大致相互解相关。 N个音频信号的集合可以通过上混合（36）从M个音频信号合成，其中M是一个或多个，N大于M.

3. 发明申请

WO2007106553A1 BINAURAL RENDERING USING SUBBAND FILTERS 审中-公开
标题翻译：使用子带滤波器进行二维显示
公开(公告)号：WO2007106553A1
公开(公告)日：2007-09-20
申请号：PCT/US2007/006522
申请日：2007-03-14
申请人： DOLBY LABORATORIES LICENSING CORPORATION , YU, Rongshan , ROBINSON, Charles, Quito , VINTON, Mark, Stuart
发明人： YU, Rongshan , ROBINSON, Charles, Quito , VINTON, Mark, Stuart
IPC分类号： H04S3/00
CPC分类号： H04S3/002 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： Transfer functions like Head Related Transfer Functions (HRTF) needed for binaural rendering are implemented efficiently by a subband-domain filter structure. In one implementation, amplitude, fractional-sample delay and phase-correction filters are arranged in cascade with one another and applied to subband signals that represent spectral content of an audio signal in frequency subbands. Other filter structures are also disclosed. These filter structures may be used advantageously in a variety of signal processing applications. A few examples of audio applications include signal bandwidth compression, loudness equalization, room acoustics correction and assisted listening for individuals with hearing impairments.
摘要翻译：像双耳渲染所需的头部相关传递函数（HRTF）之类的传递函数通过子带域滤波器结构有效地实现。在一个实施方式中，幅度，分数采样延迟和相位校正滤波器彼此级联布置并且被应用于表示频率子带中的音频信号的频谱内容的子带信号。其他过滤器结构也被公开。这些滤波器结构可以有利地用于各种信号处理应用中。一些音频应用的例子包括信号带宽压缩，响度均衡，室内声学校正和为有听力障碍的人辅助收听。

4. 发明申请

WO2005071667A1 AUDIO CODING BASED ON BLOCK GROUPING 审中-公开
标题翻译：基于块分组的音频编码
公开(公告)号：WO2005071667A1
公开(公告)日：2005-08-04
申请号：PCT/US2005/001715
申请日：2005-01-19
申请人： DOLBY LABORATORIES LICENSING CORPORATION , FELLERS, Matthew, Conrad , VINTON, Mark, Stuart , BAUER, Claus , DAVIDSON, Grant, Allen
发明人： FELLERS, Matthew, Conrad , VINTON, Mark, Stuart , BAUER, Claus , DAVIDSON, Grant, Allen
IPC分类号： G10L19/02
CPC分类号： G10L19/032
摘要： Blocks of audio information are arranged in groups that share encoding control parameters to reduce the amount of side information needed to convey the control parameters in an encoded signal. The configuration of groups that reduces the distortion of the encoded audio information may be determined by any of several techniques that search for an optimal or near optimal solution. The techniques include an exhaustive search, a fast optimal search and a greed merge, which allow the search technique to tradeoff the reduction in distortion against the bit rate of the encoded signal and/or the computational complexity of the search technique.
摘要翻译：音频信息块以共享编码控制参数的组排列，以减少在编码信号中传送控制参数所需的侧信息量。可以通过搜索最佳或接近最优解的几种技术中的任何一种来确定减少编码音频信息失真的组的配置。这些技术包括穷举搜索，快速最优搜索和贪婪合并，其允许搜索技术根据编码信号的比特率和/或搜索技术的计算复杂度折衷减少失真。

5. 发明申请

WO2006132857A2 CHANNEL RECONFIGURATION WITH SIDE INFORMATION 审中-公开
标题翻译：频道重新配置信息
公开(公告)号：WO2006132857A2
公开(公告)日：2006-12-14
申请号：PCT/US2006/020882
申请日：2006-05-26
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SEEFELDT, Alan, Jeffrey , VINTON, Mark, Stuart , ROBINSON, Charles, Quito
发明人： SEEFELDT, Alan, Jeffrey , VINTON, Mark, Stuart , ROBINSON, Charles, Quito
IPC分类号： H04S3/00 , G10L19/00
CPC分类号： H04S3/008 , G10L19/008 , H04S5/005 , H04S2420/03
摘要： During production, at least one audio signal is processed in order to derive instructions for channel reconfiguring it. The at least one audio signal and the instructions are stored or transmitted. During consumption, the at least one audio signal is channel reconfigured in accordance with the instructions. Channel reconfiguring includes upmixing, downmixing, and spatial reconfiguration. By determining the channel reconfiguration instructions during production, processing resources during consumption are reduced.
摘要翻译：在生产期间，处理至少一个音频信号以便导出用于信道重新配置的指令。存储或发送至少一个音频信号和指令。在消费期间，至少一个音频信号是根据指令重新配置的信道。通道重新配置包括上混合，下混合和空间重新配置。通过在生产期间确定信道重配置指令，减少了消费过程中的资源处理。

6. 发明申请

WO2003083834A1 RECONSTRUCTION OF THE SPECTRUM OF AN AUDIOSIGNAL WITH INCOMPLETE SPECTRUM BASED ON FREQUENCY TRANSLATION 审中-公开
标题翻译：基于频率翻译的不完整频谱的辅助频谱重建
公开(公告)号：WO2003083834A1
公开(公告)日：2003-10-09
申请号：PCT/US2003/008895
申请日：2003-03-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： TRUMAN, Michael, Mead , VINTON, Mark, Stuart
IPC分类号： G10L21/02
CPC分类号： G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
摘要： An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the signal’s noise-like quality. The signal is reconstructed by translating spectral components of the baseband signal to frequencies outside the baseband, adjusting phase of the regenerated components to maintain phase coherency, adjusting spectral shape according to the estimated spectral envelope, and adding noise according to the noise-blending parameter. Preferably, the transmitted or recorded signal also includes an estimated temporal envelope that is used to adjust the temporal shape of the reconstructed signal.
摘要翻译：通过利用来自信号噪声质量的测量得到的估计频谱包络和噪声混合参数发送或记录信号的基带来更有效地传送音频信号。通过将基带信号的频谱分量转换为基带外的频率来重构信号，调整再生分量的相位以维持相位一致性，根据估计的频谱包络调整频谱形状，并根据噪声混合参数添加噪声。优选地，发送或记录的信号还包括用于调整重构信号的时间形状的估计时间包络。

7. 发明申请

WO2004061823A1 REDUCING SCALE FACTOR TRANSMISSION COST FOR MPEG-2 AAC USING A LATTICE 审中-公开
标题翻译：降低使用尺寸的MPEG-2 AAC的尺度因子传输成本
公开(公告)号：WO2004061823A1
公开(公告)日：2004-07-22
申请号：PCT/US2003/040173
申请日：2003-12-16
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： VINTON, Mark, Stuart
IPC分类号： G10L19/02
CPC分类号： G10L19/035
摘要： A perceptual encoder divides an audio signal into successive time blocks, each time block is divided into frequency bands, and a scale factor is assigned to each of ones of the frequency bands. Bits per block increase with scale factor values and band-to-band variations in scale factor values. A preliminary scale factor for each of ones of the frequency bands is determined, and the scale factors for the each of ones of the frequency bands is optimized, the optimizing including increasing the scale factor to a value greater than the preliminary scale factor value for one or more of the frequency bands such that the increase in bit cost of the increasing is the same or less than the reduction in bit cost resulting from the decrease in band-to-band variations in scale factor values resulting from increasing the scale factor for one or more of the frequency bands.
摘要翻译：感知编码器将音频信号划分为连续的时间块，每个时间块被划分为频带，并且比例因子被分配给每个频带中的每一个。每个块的位数随着比例因子值和比例因子值的带 - 带变化而增加。确定每个频段的初步比例因子，并优化每个频段的比例因子，优化包括将比例因子增加到大于初始比例因子值的值或更多的频带，使得增加的比特成本的增加相同或小于由于增加一个比例因子而导致的比例因子值的带 - 带变化的降低导致的比特成本的降低或更多的频带。

8. 发明申请

WO2004008436A1 LOW BIT-RATE AUDIO CODING 审中-公开
标题翻译：低比特率音频编码
公开(公告)号：WO2004008436A1
公开(公告)日：2004-01-22
申请号：PCT/US2003/021506
申请日：2003-07-08
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： VINTON, Mark, Stuart , TRUMAN, Michael, Mead
IPC分类号： G10L19/02
CPC分类号： G10L19/02
摘要： The perceived quality of an audio signals obtained from very low bit-rate audio coding system is improved by using expanding quantizers and arithmetic coding in a transmitter and using complementary compression and arithmetic decoding in a receiver. An expanding quantizer is used to control the number of signal components that are quantized to zero and arithmetic coding is used to efficiently code the quantized-to-zero coefficients. This allows a wider bandwidth and more accurately quantized baseband signal to be conveyed to the receiver, which regenerates an output signal by synthesizing the missing components.
摘要翻译：通过在发射机中使用扩展量化器和算术编码，并在接收机中使用互补的压缩和算术解码来改善从非常低的比特率音频编码系统获得的音频信号的感知质量。扩展量化器用于控制量化为零的信号分量的数量，并且使用算术编码来有效地对量化到零系数进行编码。这允许更宽的带宽和更准确的量化的基带信号被传送到接收机，其通过合成丢失的分量来再生输出信号。

9. 发明申请

WO2004021332A1 CONTROLLING LOUDNESS OF SPEECH IN SIGNALS THAT CONTAIN SPEECH AND OTHER TYPES OF AUDIO MATERIAL 审中-公开
标题翻译：控制语音和其他类型的音频材料的信号的声音
公开(公告)号：WO2004021332A1
公开(公告)日：2004-03-11
申请号：PCT/US2003/025627
申请日：2003-08-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： VINTON, Mark, Stuart , ROBINSON, Charles, Quito , GUNDRY, Kenneth, James , VENEZIA, Steven, Joseph , RIEDMILLER, Jeffrey, Charles
IPC分类号： G10L11/00
CPC分类号： H03G5/165
摘要： An indication of the loudness of an audio signal containing speech and other types of audio material is obtained by classifying segments of audio information as either speech or non-speech. The loudness of the speech segments is estimated and this estimate is used to derive the indication of loudness. The indication of loudness may be used to control audio signal levels so that variations in loudness of speech between different programs is reduced. A preferred method for classifying speech segments is described.
摘要翻译：通过将音频信息的段分类为语音或非语音来获得包含语音和其他类型的音频素材的音频信号的响度的指示。估计语音段的响度，并且使用该估计来得出响度的指示。可以使用响度的指示来控制音频信号电平，从而减少不同节目之间语音的响度变化。描述了用于对语音段进行分类的优选方法。

10. 发明申请

WO2003107329A1 AUDIO CODING SYSTEM USING CHARACTERISTICS OF A DECODED SIGNAL TO ADAPT SYNTHESIZED SPECTRAL COMPONENTS 审中-公开
标题翻译：音频编码系统使用解码信号的特性来适应合成的光谱分量
公开(公告)号：WO2003107329A1
公开(公告)日：2003-12-24
申请号：PCT/US2003/018065
申请日：2003-06-09
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： DAVIDSON, Grant, Allen , TRUMAN, Michael, Mead , FELLERS, Matthew, Conrad , VINTON, Mark, Stuart
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： A receiver in an audio coding system receives a signal conveying frequency subband signals representing an audio signal. The subband signals are examined to assess one or more characteristics of the audio signal. Spectral components are synthesized having the assessed characteristics. The synthesized spectral components are integrated with the subband signals and passed through a synthesis filterbank to generate an output signal. In one implementation, the assessed characteristic is temporal shape and noise-like spectral components are synthesized having the temporal shape of the audio signal.
摘要翻译：音频编码系统中的接收机接收传送表示音频信号的频率子带信号的信号。检查子带信号以评估音频信号的一个或多个特性。合成具有评估特征的光谱成分。合成的频谱分量与子带信号集成，并通过合成滤波器组产生输出信号。在一个实现中，评估特性是时间形状，并且合成具有音频信号的时间形状的类噪声谱分量。

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