公开(公告)号：US08126950B2

公开(公告)日：2012-02-28

申请号：US10573953

申请日：2004-05-06

申请人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

发明人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

IPC分类号： G06F17/14

CPC分类号： G06F17/147 ,  G06F17/141 ,  G06F17/148 ,  G10L19/0017 ,  G10L19/0212 ,  G10L19/24 ,  H04N19/60 ,  H04N19/63

摘要： A method for performing a domain transformation of a digital signal from the time domain into the frequency domain and vice versa, the method including performing the transformation by a transforming element, the transformation element comprising a plurality of lifting stages, wherein the transformation corresponds to a transformation matrix and wherein at least one lifting stage of the plurality of lifting stages comprises at least one auxiliary transformation matrix and a rounding unit, the auxiliary transformation matrix comprising the transformation matrix itself or the corresponding transformation matrix of lower dimension. The method further comprising performing a rounding operation of the signal by the rounding unit after the transformation by the auxiliary transformation matrix.

摘要翻译： 一种用于执行从时域到频域的数字信号的域变换的方法，反之亦然，所述方法包括由变换元素执行变换，所述变换元素包括多个提升级，其中所述变换对应于 变换矩阵，并且其中所述多个提升级中的至少一个提升级包括至少一个辅助变换矩阵和舍入单元，所述辅助变换矩阵包括所述变换矩阵本身或相应的较低维度的转换矩阵。 该方法还包括：在通过辅助变换矩阵进行变换之后，由舍入单元执行该信号的舍入操作。

公开(公告)号：US07994946B2

公开(公告)日：2011-08-09

申请号：US11628951

申请日：2004-06-07

申请人： Rongshan Yu ,  Xiao Lin ,  Susanto Rahardja

发明人： Rongshan Yu ,  Xiao Lin ,  Susanto Rahardja

IPC分类号： H03M7/34

CPC分类号： H04N19/34 ,  H04N19/12 ,  H04N19/132 ,  H04N19/154 ,  H04N19/164 ,  H04N19/18 ,  H04N19/187 ,  H04N19/37 ,  H04N19/61 ,  H04N19/70

摘要： Systems and methods for scalably encoding and decoding coded data are presented. One exemplary method for scalably coding data includes classifying, based upon at least one predetermined criteria, each of the plurality of data received as either (i) perceptually relevant data or (ii) perceptually irrelevant data. The perceptually relevant data is scalably coded, and the perceptually irrelevant data is non-scalably coded. Subsequently, the scalably coded perceptually relevant data and the non-scalably coded perceptually irrelevant are combined into a coded data stream for transmission.

摘要翻译： 提出了可编码和解码编码数据的系统和方法。 用于可缩放地编码数据的一种示例性方法包括基于至少一个预定标准，将接收的多个数据中的每一个分类为（i）感知相关数据或（ii）感知上不相关的数据。 感知上相关的数据是可扩展编码的，并且感知上不相关的数据是不可分段编码的。 随后，可感知地编码的感知相关数据和不可压缩编码的感知上无关的数据被组合成用于传输的编码数据流。

公开(公告)号：US20070276894A1

公开(公告)日：2007-11-29

申请号：US10573955

申请日：2004-05-06

申请人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

发明人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

IPC分类号： G06F17/14

CPC分类号： G06F17/147 ,  G06F17/141 ,  G06F17/148 ,  G10L19/0017 ,  G10L19/0212 ,  G10L19/24 ,  H04N19/60 ,  H04N19/63

摘要： According to the process for determining a transform element for a given transformation function, which transformation function comprises a transformation matrix and corresponds to a transformation of a digital signal from the time domain into the frequency domain or vice versa, the transformation matrix is decomposed into a rotation matrix (306) and an auxiliary matrix (307) which, when multiplied with itself, equals a permutation matrix multiplied with an integer diagonal matrix. Further, the rotation matrix (306) and the auxiliary matrix (307) are each decomposed into a plurality of lifting matrices (308). Further, the transforming element is determined to comprise of a plurality of lifting stages (309) which correspond to the lifting matrices (308). The invention further provides a method for the transformation of a digital signal from the time domain into the frequency domain according to the transforming element determined by the process described above.

摘要翻译： 根据用于确定用于给定变换函数的变换元素的过程，该变换函数包括变换矩阵并且对应于从时域到频域的数字信号的变换，反之亦然，变换矩阵被分解为 旋转矩阵（306）和辅助矩阵（307）当与其自身相乘时等于乘以整数对角矩阵的置换矩阵。 此外，旋转矩阵（306）和辅助矩阵（307）分别被分解成多个提升矩阵（308）。 此外，转换元件被确定为包括对应于提升矩阵（308）的多个提升台（309）。 本发明还提供了一种根据由上述过程确定的变换元件将数字信号从时域转换成频域的方法。

公开(公告)号：US08560320B2

公开(公告)日：2013-10-15

申请号：US12531691

申请日：2008-03-14

申请人： Rongshan Yu

发明人： Rongshan Yu

IPC分类号： G10L21/02

CPC分类号： G10L21/0208 ,  G10L19/0204 ,  G10L21/0232 ,  G10L21/0264

摘要： Speech enhancement based on a psycho-acoustic model is disclosed that is capable of preserving the fidelity of speech while sufficiently suppressing noise including the processing artifact known as “musical noise”.

摘要翻译： 公开了基于心理 - 声学模型的语音增强，其能够在充分抑制被称为“音乐噪声”的处理伪像的同时充分抑制噪声的同时保持语音的保真度。

公开(公告)号：US08446947B2

公开(公告)日：2013-05-21

申请号：US10575409

申请日：2004-10-06

申请人： Rongshan Yu ,  Xiao Lin ,  Susanto Rahardja

发明人： Rongshan Yu ,  Xiao Lin ,  Susanto Rahardja

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H03M7/00 ,  G10H7/04 ,  G10L19/00

CPC分类号： G10L19/24 ,  H04N19/126 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/647

摘要： A method for encoding a digital signal into a scalable bitstream comprising quantizing the digital signal, and encoding the quantized signal to form a core-layer bitstream, performing an error mapping based on the digital signal and the core-layer bitstream to remove information that has been encoded into the core-layer bitstream, resulting in an error signal, bit-plane coding the error signal based on perceptual information of the digital signal, resulting in an enhancement-layer bitstream, wherein the perceptual information of the digital signal is determined using a perceptual model, and multiplexing the core-layer bitstream and the enhancement-layer bitstream, thereby generating the scalable bitstream. A method for decoding a scalable bitstream into a digital signal comprising de-multiplexing the scalable bitstream into a core-layer bitstream and an enhancement-layer bitstream, decoding and de-quantizing the core-layer bitstream to generate a core-layer signal, bit-plane decoding the enhancement-layer bitstream based on perceptual information of the digital signal, and performing an error mapping based on the bit-plane decoded enhancement-layer bitstream and the de-quantized core-layer signal, resulting in an reconstructed transformed signal, wherein the reconstructed transformed signal is the digital signal.

摘要翻译： 一种用于将数字信号编码成可分级比特流的方法，包括量化数字信号，以及对量化信号进行编码以形成核心层比特流，基于数字信号和核心层比特流执行误差映射，以去除具有 被编码到核心层比特流中，导致误差信号，基于数字信号的感知信息对误差信号进行位平面编码，产生增强层比特流，其中数字信号的感知信息使用 感知模型，以及多路复用核心层比特流和增强层比特流，由此生成可分级比特流。 一种用于将可分级比特流解码为数字信号的方法，包括将可分级比特流解复用为核心层比特流和增强层比特流，解码和解量化核心层比特流以产生核心层信号 基于数字信号的感知信息对增强层比特流进行平面解码，并且基于比特平面解码的增强层比特流和去量化的核心层信号执行错误映射，导致重构的变换信号， 其中重建的变换信号是数字信号。

公开(公告)号：US20120303833A1

公开(公告)日：2012-11-29

申请号：US13372010

申请日：2012-02-13

申请人： Xiaoming Bao ,  Rongshan Yu ,  Susanto Rahardja

发明人： Xiaoming Bao ,  Rongshan Yu ,  Susanto Rahardja

IPC分类号： G06F15/16

CPC分类号： H04N21/2662 ,  H04L65/4069 ,  H04L67/06 ,  H04N21/233 ,  H04N21/2402 ,  H04N21/64322

摘要： According to one embodiment, a method for transmitting a digital signal is provided that includes dividing data representing the digital signal into a plurality of data blocks, processing each data block in accordance with a desired amount of data included in the data block, determining, for each processed data block, the size of the processed data block, generating a message including, in a message body of the message, the processed data blocks and, for each data block, a message field specifying the size of the processed data block and transmitting the message.

摘要翻译： 根据一个实施例，提供了一种用于发送数字信号的方法，其包括将表示数字信号的数据划分成多个数据块，根据包含在数据块中的期望数据量来处理每个数据块， 每个处理的数据块，处理的数据块的大小，在消息的消息体中生成包括处理的数据块的消息，并且对于每个数据块，消息字段指定处理的数据块的大小并发送 消息。

公开(公告)号：US20080025519A1

公开(公告)日：2008-01-31

申请号：US11881435

申请日：2007-07-27

申请人： Rongshan Yu ,  Charles Robinson ,  Mark Vinton

发明人： Rongshan Yu ,  Charles Robinson ,  Mark Vinton

IPC分类号： H04R5/00

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： 通过子带域滤波器结构有效实现双耳渲染所需的头相关传输功能（HRTF）等传输功能。 在一个实现中，幅度，分数采样延迟和相位校正滤波器彼此级联地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。 还公开了其它过滤器结构。 这些滤波器结构可以有利地用于各种信号处理应用中。 音频应用的几个示例包括信号带宽压缩，响度均衡，房间声学校正和辅助听力听觉障碍的个人。

公开(公告)号：US08538763B2

公开(公告)日：2013-09-17

申请号：US12677087

申请日：2008-09-10

申请人： Rongshan Yu

发明人： Rongshan Yu

IPC分类号： G10L19/00

CPC分类号： G10L21/0208 ,  G10L21/0232 ,  G10L2021/02168

摘要： Enhancing speech components of an audio signal composed of speech and noise components includes controlling the gain of the audio signal in ones of its subbands, wherein the gain in a subband is reduced as the level of estimated noise components increases with respect to the level of speech components, wherein the level of estimated noise components is determined at least in part by (1) comparing an estimated noise components level with the level of the audio signal in the subband and increasing the estimated noise components level in the subband by a predetermined amount when the input signal level in the subband exceeds the estimated noise components level in the subband by a limit for more than a defined time, or (2) obtaining and monitoring the signal-to-noise ratio in the subband and increasing the estimated noise components level in the subband by a predetermined amount when the signal-to-noise ratio in the subband exceeds a limit for more than a defined time.

摘要翻译： 增强由语音和噪声分量组成的音频信号的语音分量包括在其子频带中控制音频信号的增益，其中随着估计噪声分量的水平相对于语音水平而增加，子带中的增益减小 组件，其中至少部分地通过以下方式来确定所估计的噪声分量的电平：（1）将所估计的噪声分量电平与所述子带中的所述音频信号的电平进行比较，并将所述子带中的估计噪声分量电平增加预定量， 子带中的输入信号电平超过限定时间内的子带中估计的噪声分量电平，或（2）获得和监视子带中的信噪比并增加估计的噪声分量电平 当子带中的信噪比超过限定时间时，子带中预定量。

公开(公告)号：US08392179B2

公开(公告)日：2013-03-05

申请号：US12921752

申请日：2009-03-12

申请人： Rongshan Yu ,  Regunathan Radhakrishnan ,  Robert Andersen ,  Grant Davidson

发明人： Rongshan Yu ,  Regunathan Radhakrishnan ,  Robert Andersen ,  Grant Davidson

IPC分类号： G10L11/06

CPC分类号： G10L19/18 ,  G10L19/093 ,  G10L19/12 ,  G10L2019/0004 ,  G10L2019/0005

摘要： The invention relates to the coding of audio signals that may include both speech-like and non-speech-like signal components. It describes methods and apparatus for code excited linear prediction (CELP) audio encoding and decoding that employ linear predictive coding (LPC) synthesis filters controlled by LPC parameters, a plurality of codebooks each having codevectors, at least one codebook providing an excitation more appropriate for non-speech-like signals and at least one codebook providing an excitation more appropriate for speech-like signals, and a plurality of gain factors, each associated with a codebook. The encoding methods and apparatus select from the codebooks codevectors and/or associated gain factors by minimizing a measure of the difference between the audio signal and a reconstruction of the audio signal derived from the codebook excitations. The decoding methods and apparatus generate a reconstructed output signal from the LPC parameters, codevectors, and gain factors.

摘要翻译： 本发明涉及可以包括语音类和非语音类信号分量的音频信号的编码。 它描述了采用由LPC参数控制的线性预测编码（LPC）合成滤波器的码激励线性预测（CELP）音频编码和解码的方法和装置，每个具有码矢量的多个码本，提供更适合于 非语音类信号和至少一个提供更适合于类似语音的信号的激励的码本，以及多个增益因子，每个与码本相关联。 编码方法和装置通过最小化音频信号与从码本激励导出的音频信号的重建之间的差异的度量来从码本代码矢量和/或相关联的增益因子中选择。 解码方法和装置从LPC参数，代码矢量和增益因子产生重构的输出信号。

公开(公告)号：US08126951B2

公开(公告)日：2012-02-28

申请号：US10573954

申请日：2004-05-06

申请人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

发明人： Haibin Huang ,  Xiao Lin ,  Susanto Rahardja ,  Rongshan Yu

IPC分类号： G06F17/14

CPC分类号： G06F17/147 ,  G06F17/141 ,  G06F17/148 ,  G10L19/0017 ,  G10L19/0212 ,  G10L19/24 ,  H04N19/60 ,  H04N19/63

摘要： A method for transforming a digital signal from the time domain into the frequency domain and vice versa using a transformation function comprising a transformation matrix, the digital signal comprising data symbols which are grouped into a plurality of blocks, each block comprising a predefined number of the data symbols. The method includes the process of transforming two blocks of the digital signal by one transforming element, wherein the transforming element corresponds to a block-diagonal matrix comprising two sub matrices, wherein each sub-matrix comprises the transformation matrix and the transforming element comprises a plurality of lifting stages and wherein each lifting stage comprises the processing of blocks of the digital signal by an auxiliary transformation and by a rounding unit.

摘要翻译： 一种用于使用包括变换矩阵的变换函数将数字信号从时域变换为频域的方法，所述变换函数包括被分组为多个块的数据符号，每个块包括预定数量的 数据符号。 该方法包括通过一个变换元件变换数字信号的两个块的过程，其中变换元件对应于包括两个子矩阵的块对角矩阵，其中每个子矩阵包括变换矩阵，并且变换元件包括多个 的提升级，并且其中每个提升级包括通过辅助变换和舍入单元处理数字信号的块。