专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07447631B2 Audio coding system using spectral hole filling 有权
标题翻译：音频编码系统使用频谱孔填充
公开(公告)号：US07447631B2
公开(公告)日：2008-11-04
申请号：US10174493
申请日：2002-06-17
申请人： Michael Mead Truman , Grant Allen Davidson , Matthew Conrad Fellers , Mark Stuart Vinton , Matthew Aubrey Watson , Charles Quito Robinson
发明人： Michael Mead Truman , Grant Allen Davidson , Matthew Conrad Fellers , Mark Stuart Vinton , Matthew Aubrey Watson , Charles Quito Robinson
IPC分类号： G10L19/00 , G10L21/00
CPC分类号： G10L19/035 , G10L21/038
摘要： Audio coding processes like quantization can cause spectral components of an encoded audio signal to be set to zero, creating spectral holes in the signal. These spectral holes can degrade the perceived quality of audio signals that are reproduced by audio coding systems. An improved decoder avoids or reduces the degradation by filling the spectral holes with synthesized spectral components. An improved encoder may also be used to realize further improvements in the decoder.
摘要翻译：诸如量化的音频编码处理可以使经编码的音频信号的频谱分量被设置为零，从而在信号中产生频谱孔。这些频谱孔可以降低由音频编码系统再现的音频信号的感知质量。改进的解码器通过用合成的光谱分量填充光谱空间来避免或减少降解。还可以使用改进的编码器来实现解码器的进一步改进。

2. 发明授权

US08050933B2 Audio coding system using temporal shape of a decoded signal to adapt synthesized spectral components 有权
标题翻译：音频编码系统使用解码信号的时间形状来适应合成的频谱分量
公开(公告)号：US08050933B2
公开(公告)日：2011-11-01
申请号：US12365783
申请日：2009-02-04
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L19/02
CPC分类号： G10L19/035 , 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 including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output 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包括时间形状的音频信号的一个或多个特性。合成具有一个或多个评估特征的光谱分量，其与子带信号集成并通过合成滤波器组以产生输出信号。

3. 发明授权

US08032387B2 Audio coding system using temporal shape of a decoded signal to adapt synthesized spectral components 有权
公开(公告)号：US08032387B2
公开(公告)日：2011-10-04
申请号：US12365789
申请日：2009-02-04
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L19/02
CPC分类号： G10L19/035 , 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 including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output signal.

4. 发明申请

US20090138267A1 Audio Coding System Using Temporal Shape of a Decoded Signal to Adapt Synthesized Spectral Components 有权
公开(公告)号：US20090138267A1
公开(公告)日：2009-05-28
申请号：US12365789
申请日：2009-02-04
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , 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 including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output signal.

5. 发明授权

US07337118B2 Audio coding system using characteristics of a decoded signal to adapt synthesized spectral components 有权
公开(公告)号：US07337118B2
公开(公告)日：2008-02-26
申请号：US10238047
申请日：2002-09-06
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , 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.

6. 发明申请

US20090144055A1 Audio Coding System Using Temporal Shape of a Decoded Signal to Adapt Synthesized Spectral Components 有权
标题翻译：音频编码系统使用解码信号的时间形状来适应合成的频谱分量
公开(公告)号：US20090144055A1
公开(公告)日：2009-06-04
申请号：US12365783
申请日：2009-02-04
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L21/02 , G10L21/00
CPC分类号： G10L19/035 , 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 including temporal shape. Spectral components are synthesized having the one or more assessed characteristics, integrated with the subband signals and passed through a synthesis filterbank to generate an output 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包括时间形状的音频信号的一个或多个特性。合成具有一个或多个评估特征的光谱分量，其与子带信号集成并通过合成滤波器组以产生输出信号。

7. 发明申请

US20080140405A1 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频谱分量
公开(公告)号：US20080140405A1
公开(公告)日：2008-06-12
申请号：US11881674
申请日：2007-07-27
申请人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
发明人： Grant Allen Davidson , Michael Mead Truman , Matthew Conrad Fellers , Mark Stuart Vinton
IPC分类号： G10L19/00
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。

8. 发明授权

US06246345B1 Using gain-adaptive quantization and non-uniform symbol lengths for improved audio coding 有权
标题翻译：使用增益自适应量化和非均匀符号长度来改进音频编码
公开(公告)号：US06246345B1
公开(公告)日：2001-06-12
申请号：US09349645
申请日：1999-07-08
申请人： Grant Allen Davidson , Charles Quito Robinson , Michael Mead Truman
发明人： Grant Allen Davidson , Charles Quito Robinson , Michael Mead Truman
IPC分类号： H03M734
CPC分类号： G10L19/0208
摘要： Techniques like Huffman coding can be used to represent digital audio signal components more efficiently using non-uniform length symbols than can be represented by other coding techniques using uniform length symbols Unfortunately, the coding efficiency that can be achieved by Huffman coding depends on the probability density function of the information to be coded and the Huffman coding process itself requires considerable processing and memory resources. A coding process that uses gain-adaptive quantization according to the present invention can realize the advantage of using non-uniform length symbols while overcoming the shortcomings of Huffman coding. In gain-adaptive quantization, the magnitudes of signal components to be encoded are compared to one or more thresholds and placed into classes according to the results of the comparison. The magnitudes of the components placed into one of the classes are modified according to a gain factor that is related to the threshold used to classify the components. Preferably, the gain factor may be expressed as a function of only the threshold value. Gain-adaptive quantization may be used to encode frequency subband signals in split-band audio coding systems. Additional features including cascaded gain-adaptive quantization, intra-frame coding, split-interval and non-overloading quantizers are disclosed.
摘要翻译：诸如霍夫曼编码之类的技术可用于使用不均匀的长度符号来更有效地表示数字音频信号分量，而不是使用均匀长度符号的其他编码技术可以表示。遗憾的是，霍夫曼编码可以实现的编码效率取决于概率密度要编码的信息的功能和霍夫曼编码过程本身需要相当多的处理和存储资源。使用根据本发明的增益自适应量化的编码处理可以实现在克服霍夫曼编码的缺点的同时使用非均匀长度符号的优点。在增益自适应量化中，将要编码的信号分量的幅度与一个或多个阈值进行比较，并根据比较结果将其分级。根据与用于对组件进行分类的阈值相关的增益因子来修改放置到其中一个类中的组件的大小。优选地，增益因子可以仅表示为阈值的函数。增益自适应量化可用于对分频音频编码系统中的频率子带信号进行编码。公开了包括级联增益自适应量化，帧内编码，分割间隔和非重载量化器的附加特征。

9. 发明授权

US08126709B2 Broadband frequency translation for high frequency regeneration 有权
标题翻译：宽带频率转换用于高频再生
公开(公告)号：US08126709B2
公开(公告)日：2012-02-28
申请号：US12391936
申请日：2009-02-24
申请人： Michael Mead Truman , Mark Stuart Vinton
发明人： Michael Mead Truman , Mark Stuart Vinton
IPC分类号： G06F15/00 , G10L11/00 , G10L19/00 , G10L19/14 , 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到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增加噪声。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。

10. 发明授权

US07395211B2 Modulating one or more parameters of an audio or video perceptual coding system in response to supplemental information 有权
标题翻译：响应于补充信息调制音频或视频感知编码系统的一个或多个参数
公开(公告)号：US07395211B2
公开(公告)日：2008-07-01
申请号：US10344388
申请日：2001-08-15
申请人： Matthew Aubrey Watson , Michael Mead Truman , Stephen Decker Vernon , Brett Graham Crockett
发明人： Matthew Aubrey Watson , Michael Mead Truman , Stephen Decker Vernon , Brett Graham Crockett
IPC分类号： G10L11/04 , G10L21/00 , G10L19/00 , G10L19/14
CPC分类号： G06T1/0028 , G06T2201/0064 , G10L19/002 , G10L19/018 , H04N19/467
摘要： A method of modifying the operation of the encoder function and/or the decoder function of a perceptual coding system in accordance with supplemental information, such as a watermark, so that the supplemental information may be detectable in the output of the decoder function. One or more parameters are modulated in the encoder function and/or the decoder function in response to the supplemental information.
摘要翻译：根据诸如水印的补充信息修改感知编码系统的编码器功能和/或解码器功能的操作的方法，使得补充信息在解码器功能的输出中是可检测的。响应于补充信息，在编码器功能和/或解码器功能中调制一个或多个参数。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式