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31. 发明授权

US07860720B2 Multi-channel audio encoding and decoding with different window configurations 有权
标题翻译：具有不同窗口配置的多声道音频编码和解码
公开(公告)号：US07860720B2
公开(公告)日：2010-12-28
申请号：US12121629
申请日：2008-05-15
申请人： Naveen Thumpudi , Wei-Ge Chen
发明人： Naveen Thumpudi , Wei-Ge Chen
IPC分类号： G10L19/00 , G10L21/00 , G10L21/04
CPC分类号： G10L19/00 , G10L19/008 , G10L19/0212
摘要： An audio encoder and decoder use architectures and techniques that improve the efficiency of multi-channel audio coding and decoding. The described strategies include various techniques and tools, which can be used in combination or independently. For example, an audio encoder performs a pre-processing multi-channel transform on multi-channel audio data, varying the transform so as to control quality. The encoder groups multiple windows from different channels into one or more tiles and outputs tile configuration information, which allows the encoder to isolate transients that appear in a particular channel with small windows, but use large windows in other channels. Using a variety of techniques, the encoder performs flexible multi-channel transforms that effectively take advantage of inter-channel correlation. An audio decoder performs corresponding processing and decoding. In addition, the decoder performs a post-processing multi-channel transform for any of multiple different purposes.
摘要翻译：音频编码器和解码器使用提高多声道音频编码和解码效率的架构和技术。所描述的策略包括可以组合或独立使用的各种技术和工具。例如，音频编码器对多声道音频数据执行预处理多声道变换，改变变换以便控制质量。编码器将来自不同通道的多个窗口分组成一个或多个瓦片并输出瓦片配置信息，这允许编码器隔离出具有小窗口的特定通道中的瞬态，但在其他通道中使用大窗口。使用各种技术，编码器执行灵活的多通道变换，有效利用信道间相关性。音频解码器执行相应的处理和解码。此外，解码器对于多个不同目的中的任一个执行后处理多信道变换。

32. 发明申请

US20100318368A1 QUANTIZATION AND INVERSE QUANTIZATION FOR AUDIO 有权
标题翻译：音频的量化和反向量化
公开(公告)号：US20100318368A1
公开(公告)日：2010-12-16
申请号：US12849626
申请日：2010-08-03
申请人： Naveen Thumpudi , Wei-Ge Chen
发明人： Naveen Thumpudi , Wei-Ge Chen
IPC分类号： G10L21/00
CPC分类号： G10L19/032 , G10L19/008
摘要： An audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and decoding. The described strategies include various techniques and tools, which can be used in combination or independently. For example, an audio encoder quantizes audio data in multiple channels, applying multiple channel-specific quantizer step modifiers, which give the encoder more control over balancing reconstruction quality between channels. The encoder also applies multiple quantization matrices and varies the resolution of the quantization matrices, which allows the encoder to use more resolution if overall quality is good and use less resolution if overall quality is poor. Finally, the encoder compresses one or more quantization matrices using temporal prediction to reduce the bitrate associated with the quantization matrices. An audio decoder performs corresponding inverse processing and decoding.
摘要翻译：音频编码器和解码器使用在音频编码和解码中提高量化（例如，加权）和逆量化（例如，反加权）的效率的架构和技术。所描述的策略包括可以组合或独立使用的各种技术和工具。例如，音频编码器对多个信道中的音频数据进行量化，应用多个信道专用量化器步进修改器，这使得编码器更多地控制平衡信道之间的重建质量。编码器还应用多个量化矩阵并改变量化矩阵的分辨率，这允许编码器在整体质量好的情况下使用更高的分辨率，并且如果整体质量差，则使用较小的分辨率。最后，编码器使用时间预测来压缩一个或多个量化矩阵，以减少与量化矩阵相关联的比特率。音频解码器执行相应的反向处理和解码。

33. 发明授权

US07644002B2 Multi-pass variable bitrate media encoding 有权
标题翻译：多通道可变比特率媒体编码
公开(公告)号：US07644002B2
公开(公告)日：2010-01-05
申请号：US12004909
申请日：2007-12-21
申请人： Naveen Thumpudi , Wei-Ge Chen
发明人： Naveen Thumpudi , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/24
摘要： An encoder uses multi-pass VBR control strategies to provide constant or relatively constant quality for VBR output while guaranteeing (within tolerance) either compressed file size or, equivalently, overall average bitrate. The control strategies include various techniques and tools, which can be used in combination or independently. For example, in a first pass, an audio encoder encodes a sequence of audio data partitioned into variable-size chunks. In a second pass, the encoder encodes the sequence according to control parameters to produce output of relatively constant quality. The encoder sets checkpoints in the second pass to adjust the control parameters and/or subsequent checkpoints. The encoder selectively considers a peak bitrate constraint to limit peak bitrate. The encoder stores auxiliary information from the first pass for use in the second pass, which increases the speed of the second pass. Finally, the encoder compares signatures for the input data to check consistency between passes.
摘要翻译：编码器使用多通VBR控制策略为VBR输出提供恒定或相对恒定的质量，同时保证（容差范围内）压缩文件大小或等效的总平均比特率。控制策略包括可以组合或独立使用的各种技术和工具。例如，在第一遍中，音频编码器对分割成可变大小的块的音频数据序列进行编码。在第二遍中，编码器根据控制参数编码序列以产生相对恒定质量的输出。编码器在第二遍中设置检查点以调整控制参数和/或后续检查点。编码器选择性地考虑峰值比特率约束来限制峰值比特率。编码器存储从第一遍的辅助信息用于第二遍，这增加了第二遍的速度。最后，编码器对输入数据的签名进行比较，以检查通过之间的一致性。

34. 发明授权

US07539612B2 Coding and decoding scale factor information 有权
标题翻译：编码和解码比例因子信息
公开(公告)号：US07539612B2
公开(公告)日：2009-05-26
申请号：US11183291
申请日：2005-07-15
申请人： Naveen Thumpudi , Wei-Ge Chen , Chao He
发明人： Naveen Thumpudi , Wei-Ge Chen , Chao He
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/035 , G10L19/06
摘要： Techniques and tools for representing, coding, and decoding scale factor information are described herein. For example, during encoding of scale factors, an encoder uses one or more of flexible scale factor resolution selection, spatial prediction of scale factors, flexible prediction of scale factors, smoothing of noisy scale factor amplitudes, reordering of scale factor prediction residuals, and prediction of scale factor prediction residuals. Or, during decoding, a decoder uses one or more of flexible scale factor resolution selection, spatial prediction of scale factors, flexible prediction of scale factors, reordering of scale factor prediction residuals, and prediction of scale factor prediction residuals.
摘要翻译：本文描述了用于表示，编码和解码比例因子信息的技术和工具。例如，在编码比例因子时，编码器使用一种或多种灵活的比例因子分辨率选择，比例因子的空间预测，比例因子的灵活预测，噪声比例因子幅度的平滑，比例因子预测残差的重新排序以及预测的比例因子预测残差。或者，在解码期间，解码器使用灵活比例因子分辨率选择，比例因子的空间预测，比例因子的灵活预测，比例因子预测残差的重新排序以及比例因子预测残差的预测中的一个或多个。

35. 发明授权

US07460993B2 Adaptive window-size selection in transform coding 有权
标题翻译：变换编码中的自适应窗口大小选择
公开(公告)号：US07460993B2
公开(公告)日：2008-12-02
申请号：US10020708
申请日：2001-12-14
申请人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
发明人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/02
摘要： A transform coder adaptively configures window sizes for transform coding in a two-pass process to maximize coding efficiency, while achieving necessary time resolution to avoid pre-echo. In a first pass, the coder places small size windows over detected transient regions of an input signal in an open-loop window configuration process. In a second pass, the coder adjusts the window size configuration according to measurements of the achieved quality in a closed-loop window configuration process. Where quality measurement shows unacceptable quantization noise, the coder increases window size. Where pre-echo is detected, the coder reduces window size within coding bit rate constraints.
摘要翻译：变换编码器在双遍处理中自适应地配置用于变换编码的窗口大小以最大化编码效率，同时实现必要的时间分辨率以避免预回波。在第一遍，编码器在开环窗口配置过程中将小尺寸窗口放置在输入信号的检测到的瞬态区域上。在第二遍中，编码器根据在闭环窗口配置过程中实现的质量的测量来调整窗口大小配置。在质量测量显示不可接受的量化噪声的情况下，编码器增加窗口大小。在检测到预回波的情况下，编码器在编码比特率约束内减少窗口大小。

36. 发明申请

US20080109230A1 Multi-pass variable bitrate media encoding 有权
公开(公告)号：US20080109230A1
公开(公告)日：2008-05-08
申请号：US12004909
申请日：2007-12-21
申请人： Naveen Thumpudi , Wei-Ge Chen
发明人： Naveen Thumpudi , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/24
摘要： An encoder uses multi-pass VBR control strategies to provide constant or relatively constant quality for VBR output while guaranteeing (within tolerance) either compressed file size or, equivalently, overall average bitrate. The control strategies include various techniques and tools, which can be used in combination or independently. For example, in a first pass, an audio encoder encodes a sequence of audio data partitioned into variable-size chunks. In a second pass, the encoder encodes the sequence according to control parameters to produce output of relatively constant quality. The encoder sets checkpoints in the second pass to adjust the control parameters and/or subsequent checkpoints. The encoder selectively considers a peak bitrate constraint to limit peak bitrate. The encoder stores auxiliary information from the first pass for use in the second pass, which increases the speed of the second pass. Finally, the encoder compares signatures for the input data to check consistency between passes.

37. 发明申请

US20080015850A1 QUANTIZATION MATRICES FOR DIGITAL AUDIO 有权
标题翻译：数字音频的量化矩阵
公开(公告)号：US20080015850A1
公开(公告)日：2008-01-17
申请号：US11781851
申请日：2007-07-23
申请人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
发明人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
IPC分类号： G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204
摘要： Quantization matrices facilitate digital audio encoding and decoding. An audio encoder generates and compresses quantization matrices; an audio decoder decompresses and applies the quantization matrices. The invention includes several techniques and tools, which can be used in combination or separately. For example, the audio encoder can generate quantization matrices from critical band patterns for blocks of audio data. The encoder can compute the quantization matrices directly from the critical band patterns, which can be computed from the same audio data that is being compressed. The audio encoder/decoder can use different modes for generating/applying quantization matrices depending on the coding channel mode of multi-channel audio data. The audio encoder/decoder can use different compression/decompression modes for the quantization matrices, including a parametric compression/decompression mode.
摘要翻译：量化矩阵便于数字音频编码和解码。音频编码器生成并压缩量化矩阵; 音频解码器解压缩并应用量化矩阵。本发明包括可以组合或分开使用的几种技术和工具。例如，音频编码器可以生成用于音频数据块的临界频带模式的量化矩阵。编码器可以直接从临界频带模式计算量化矩阵，这可以从正被压缩的相同音频数据计算。音频编码器/解码器可以根据多声道音频数据的编码信道模式使用不同的模式来产生/应用量化矩阵。音频编码器/解码器可以对量化矩阵使用不同的压缩/解压缩模式，包括参数压缩/解压缩模式。

38. 发明授权

US07249016B2 Quantization matrices using normalized-block pattern of digital audio 有权
标题翻译：使用数字音频的归一化块模式的量化矩阵
公开(公告)号：US07249016B2
公开(公告)日：2007-07-24
申请号：US11060936
申请日：2005-02-17
申请人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
发明人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
IPC分类号： G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204
摘要： Quantization matrices facilitate digital audio encoding and decoding. An audio encoder generates and compresses quantization matrices; an audio decoder decompresses and applies the quantization matrices. The invention includes several techniques and tools, which can be used in combination or separately. For example, the audio encoder can generate quantization matrices from critical band patterns for blocks of audio data. The encoder can compute the quantization matrices directly from the critical band patterns, which can be computed from the same audio data that is being compressed. The audio encoder/decoder can use different modes for generating/applying quantization matrices depending on the coding channel mode of multi-channel audio data. The audio encoder/decoder can use different compression/decompression modes for the quantization matrices, including a parametric compression/decompression mode.
摘要翻译：量化矩阵便于数字音频编码和解码。音频编码器生成并压缩量化矩阵; 音频解码器解压缩并应用量化矩阵。本发明包括可以组合或分开使用的几种技术和工具。例如，音频编码器可以生成用于音频数据块的临界频带模式的量化矩阵。编码器可以直接从临界频带模式计算量化矩阵，这可以从正被压缩的相同音频数据计算。音频编码器/解码器可以根据多声道音频数据的编码信道模式使用不同的模式来产生/应用量化矩阵。音频编码器/解码器可以对量化矩阵使用不同的压缩/解压缩模式，包括参数压缩/解压缩模式。

39. 发明申请

US20070016415A1 Prediction of spectral coefficients in waveform coding and decoding 有权
标题翻译：波形编码和解码中频谱系数的预测
公开(公告)号：US20070016415A1
公开(公告)日：2007-01-18
申请号：US11183204
申请日：2005-07-15
申请人： Naveen Thumpudi , Wei-Ge Chen , Chao He
发明人： Naveen Thumpudi , Wei-Ge Chen , Chao He
IPC分类号： G10L19/00
CPC分类号： G10L19/03 , G10L19/0017
摘要： Techniques and tools for prediction of spectral coefficients in encoding and decoding are described herein. For certain types and patterns of content, coefficient prediction exploits correlation between adjacent spectral coefficients, making subsequent entropy encoding more efficient. For example, an audio encoder predictively codes quantized spectral coefficients in the quantized domain and entropy encodes results of the predictive coding. Or, for a particular quantized spectral coefficient, an audio decoder entropy decodes a difference value, computes a predictor in the quantized domain, and combines the predictor and the difference value.
摘要翻译：本文描述了用于预测编码和解码中的频谱系数的技术和工具。对于某些类型和模式的内容，系数预测利用相邻频谱系数之间的相关性，使后续的熵编码更有效率。例如，音频编码器预测性地编码量化域中的量化频谱系数，并对熵编码预测编码的结果。或者，对于特定的量化频谱系数，音频解码器熵解码差值，计算量化域中的预测器，并组合预测器和差值。

40. 发明授权

US06934677B2 Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands 有权
标题翻译：量化矩阵基于用于数字音频的临界频带模式信息，其中量化频带与临界频带不同
公开(公告)号：US06934677B2
公开(公告)日：2005-08-23
申请号：US10017702
申请日：2001-12-14
申请人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
发明人： Wei-Ge Chen , Naveen Thumpudi , Ming-Chieh Lee
IPC分类号： G10L19/008 , G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204
摘要： Quantization matrices facilitate digital audio encoding and decoding. An audio encoder generates and compresses quantization matrices; an audio decoder decompresses and applies the quantization matrices. The invention includes several techniques and tools, which can be used in combination or separately. For example, the audio encoder can generate quantization matrices from critical band patterns for blocks of audio data. The encoder can compute the quantization matrices directly from the critical band patterns, which can be computed from the same audio data that is being compressed. The audio encoder/decoder can use different modes for generating/applying quantization matrices depending on the coding channel mode of multi-channel audio data. The audio encoder/decoder can use different compression/decompression modes for the quantization matrices, including a parametric compression/decompression mode.
摘要翻译：量化矩阵便于数字音频编码和解码。音频编码器生成并压缩量化矩阵; 音频解码器解压缩并应用量化矩阵。本发明包括可以组合或分开使用的几种技术和工具。例如，音频编码器可以生成用于音频数据块的临界频带模式的量化矩阵。编码器可以直接从临界频带模式计算量化矩阵，这可以从正被压缩的相同音频数据计算。音频编码器/解码器可以根据多声道音频数据的编码信道模式使用不同的模式来产生/应用量化矩阵。音频编码器/解码器可以对量化矩阵使用不同的压缩/解压缩模式，包括参数压缩/解压缩模式。

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