Method and apparatus of voice mixing for conferencing amongst diverse networks
    1.
    发明授权
    Method and apparatus of voice mixing for conferencing amongst diverse networks 失效
    语音混合的方法和装置,用于不同网络之间的会议

    公开(公告)号:US07599834B2

    公开(公告)日:2009-10-06

    申请号:US11564794

    申请日:2006-11-29

    IPC分类号: G10L19/04 H04M3/56

    CPC分类号: H04M3/568

    摘要: A conferencing system is provided that utilizes both time domain signal mixing and direct signal fast transcoding. An exemplary embodiment of the present invention utilizes both time domain signal mixing and direct signal fast transcoding to process a bit-stream from a same channel during a conference.

    摘要翻译: 提供了一种利用时域信号混合和直接信号快速转码的会议系统。 本发明的示例性实施例利用时域信号混合和直接信号快速转码来在会议期间处理来自相同信道的比特流。

    Method and apparatus for compressed video bitstream conversion with reduced-algorithmic-delay
    3.
    发明授权
    Method and apparatus for compressed video bitstream conversion with reduced-algorithmic-delay 有权
    用于压缩视频比特流转换的方法和装置,具有减少的算法延迟

    公开(公告)号:US08837605B2

    公开(公告)日:2014-09-16

    申请号:US11862117

    申请日:2007-09-26

    摘要: The present invention relates to converting media bitstreams across different networks in a media gateway without any algorithmic delay, and reduces the computation load within the transmission in the situation where the bandwidth of the outgoing network varies dynamically. A first embodiment of the present invention provides an apparatus and a method for a Reduced-Algorithmic-Delay Media Stream Unit Conversion module which is a light weight Simple Pass-Through operation. A second embodiment of the present invention provides an apparatus and a method for a Reduced-Algorithmic-Delay Video Rate Conversion. An alternative embodiment provides an apparatus and a method for a Smart Pass-Through Operation which involves switching between the Simple Pass-Through and the Rate Converter. The methods and apparatuses provided by the first and second embodiment can be used as a stand alone system, or as part of the module of the alternative embodiment.

    摘要翻译: 本发明涉及在媒体网关中的不同网络上转换媒体比特流而没有任何算法延迟,并且在出局网络的带宽动态变化的情况下减少传输内的计算负荷。 本发明的第一实施例提供了一种重量轻的简单通过操作的减速算法延迟媒体流单元转换模块的装置和方法。 本发明的第二实施例提供了一种用于减少算法延迟视频速率转换的装置和方法。 替代实施例提供了一种智能直通操作的装置和方法,其涉及在简单通过和速率转换器之间切换。 由第一和第二实施例提供的方法和装置可以用作独立系统,或者作为替代实施例的模块的一部分。

    Method and apparatus for frame classification and rate determination in voice transcoders for telecommunications
    4.
    发明授权
    Method and apparatus for frame classification and rate determination in voice transcoders for telecommunications 失效
    用于电信的语音转码器中的帧分类和速率确定的方法和装置

    公开(公告)号:US07469209B2

    公开(公告)日:2008-12-23

    申请号:US10642422

    申请日:2003-08-14

    CPC分类号: G10L19/173 G10L19/10

    摘要: A method and apparatus for frame classification and rate determination in voice transcoders. The apparatus includes a classifier input parameter preparation module that unpacks the bitstream from the source codec and selects the codec parameters to be used for classification, parameter buffers that store previous input and output parameters of previous frames, and a frame classification and rate decision module that uses the source codec parameters from the current frame and zero or more frames to determine the frame class, rate, and classification feature parameters for the destination codec. The classifier input parameter preparation module separates the bitstream code and unquantizes the sub-codes into the codec parameters. The frame classification and rate decision module comprises M sub-classifiers and a final decision module. The characteristics of the sub-classifiers are obtained by a classifier construction module, which comprises a training set generation module, a learning module and an evaluation module.

    摘要翻译: 一种用于语音转码器中帧分类和速率确定的方法和装置。 该装置包括:分类器输入参数准备模块,用于从源编解码器解码比特流并选择要用于分类的编解码器参数,存储先前帧的先前输入和输出参数的参数缓冲器;以及帧分类和速率决定模块, 使用来自当前帧的源编解码器参数和零个或多个帧来确定目标编解码器的帧类,速率和分类特征参数。 分类器输入参数准备模块分离比特流代码,并将子代码未量化为编解码器参数。 帧分类和速率决定模块包括M个子分类器和一个最终决策模块。 分类器的特征由分类器构造模块获得,分类器构造模块包括训练集生成模块,学习模块和评估模块。

    Transcoding method and system between CELP-based speech codes with externally provided status
    5.
    发明授权
    Transcoding method and system between CELP-based speech codes with externally provided status 有权
    基于CELP的语音代码与外部提供状态之间的转码方法和系统

    公开(公告)号:US07725312B2

    公开(公告)日:2010-05-25

    申请号:US11711467

    申请日:2007-02-26

    IPC分类号: G10L19/14

    CPC分类号: G10L19/12 G10L19/173

    摘要: A method for transcoding a CELP based compressed voice bitstream from source codec to destination codec. The method includes processing a source codec input CELP bitstream to unpack at least one or more CELP parameters from the input CELP bitstream and interpolating one or more of the plurality of unpacked CELP parameters from a source codec format to a destination codec format if a difference of one or more of a plurality of destination codec parameters including a frame size, a subframe size, and/or sampling rate of the destination codec format and one or more of a plurality of source codec parameters including a frame size, a subframe size, or sampling rate of the source codec format exist. The method includes encoding the one or more CELP parameters for the destination codec and processing a destination CELP bitstream by at least packing the one or more CELP parameters for the destination codec.

    摘要翻译: 一种用于将基于CELP的压缩语音比特流从源编解码器转码为目标编解码器的方法。 该方法包括:处理源编解码器输入CELP比特流以从输入CELP比特流解压缩至少一个或多个CELP参数,并且将多个未打包的CELP参数中的一个或多个从源编解码器格式内插到目的地编解码器格式,如果 多个目的地编解码器参数中的一个或多个包括目标编解码器格式的帧大小,子帧大小和/或采样率以及多个源编解码器参数中的一个或多个,包括帧大小,子帧大小或 存在源编解码格式的采样率。 该方法包括通过至少打包目的编解码器的一个或多个CELP参数来编码目的编解码器的一个或多个CELP参数并处理目的地CELP比特流。

    Method for high quality audio transcoding
    6.
    发明申请
    Method for high quality audio transcoding 有权
    高质量音频转码方法

    公开(公告)号:US20080195384A1

    公开(公告)日:2008-08-14

    申请号:US11890283

    申请日:2007-08-02

    IPC分类号: G10L19/12

    CPC分类号: G10L19/173

    摘要: A method and apparatus for a voice transcoder that converts a bitstream representing frames of data encoded according to a first voice compression standard to a bitstream representing frames of data according to a second voice compression standard using perceptual weighting that uses tuned weighting factors, such that the bitstream of a second voice compression standard to produce a higher quality decoded voice signal than a comparable tandem transcoding solution. The method includes pre-computing weighting factors for a perceptual weighting filter optimized to a specific source and destination codec pair, pre-configuring the transcoding strategies, mapping CELP parameters in the CELP parameter space according to the selected coding strategy, performing Linear Prediction analysis if specified by the transcoding strategy, perceptually weighting the speech using with tuned weighting factors, and searching for adaptive codebook and fixed-codebook parameters to obtain a quantized set of destination codec parameters.

    摘要翻译: 一种用于语音代码转换器的方法和装置,其使用使用调谐加权因子的感知加权,将代表根据第一语音压缩标准编码的数据的比特流转换为表示数据帧的比特流,使得 第二语音压缩标准的比特流,以产生比可比较的串联转码解决方案更高质量的解码语音信号。 该方法包括预先计算针对特定源和目标编解码器对优化的感知加权滤波器的加权因子,预配置转码策略,根据所选择的编码策略映射CELP参数空间中的CELP参数,执行线性预测分析,如果 由转码策略指定,用调谐的加权因子感知加权语音,并搜索自适应码本和固定码本参数以获得量化的目的地编解码器参数集合。

    Transcoding method and system between CELP-based speech codes
    7.
    发明授权
    Transcoding method and system between CELP-based speech codes 失效
    基于CELP的语音代码之间的转码方法和系统

    公开(公告)号:US06829579B2

    公开(公告)日:2004-12-07

    申请号:US10339790

    申请日:2003-01-08

    IPC分类号: G10L1914

    CPC分类号: G10L19/12 G10L19/173

    摘要: A method for transcoding a CELP based compressed voice bitstream from source codec to destination codec. The method includes processing a source codec input CELP bitstream to unpack at least one or more CELP parameters from the input CELP bitstream and interpolating one or more of the plurality of unpacked CELP parameters from a source codec format to a destination codec format if a difference of one or more of a plurality of destination codec parameters including a frame size, a subframe size, and/or sampling rate of the destination codec format and one or more of a plurality of source codec parameters including a frame size, a subframe size, or sampling rate of the source codec format exist. The method includes encoding the one or more CELP parameters for the destination codec and processing a destination CELP bitstream by at least packing the one or more CELP parameters for the destination codec.

    摘要翻译: 一种用于将基于CELP的压缩语音比特流从源编解码器转码为目标编解码器的方法。 该方法包括:处理源编解码器输入CELP比特流以从输入CELP比特流解压缩至少一个或多个CELP参数,并且将多个未打包的CELP参数中的一个或多个从源编解码器格式内插到目的地编解码器格式,如果 多个目的地编解码器参数中的一个或多个包括目标编解码器格式的帧大小,子帧大小和/或采样率以及多个源编解码器参数中的一个或多个,包括帧大小,子帧大小或 存在源编解码格式的采样率。 该方法包括通过至少打包目的编解码器的一个或多个CELP参数来编码目的编解码器的一个或多个CELP参数并处理目的地CELP比特流。

    Method for high quality audio transcoding
    8.
    发明授权
    Method for high quality audio transcoding 有权
    高质量音频转码方法

    公开(公告)号:US08150685B2

    公开(公告)日:2012-04-03

    申请号:US13097300

    申请日:2011-04-29

    IPC分类号: G10L19/12

    CPC分类号: G10L19/173

    摘要: A method and apparatus for a voice transcoder that converts a bitstream representing frames of data encoded according to a first voice compression standard to a bitstream representing frames of data according to a second voice compression standard using perceptual weighting that uses tuned weighting factors, such that the bitstream of a second voice compression standard to produce a higher quality decoded voice signal than a comparable tandem transcoding solution. The method includes pre-computing weighting factors for a perceptual weighting filter optimized to a specific source and destination codec pair, pre-configuring the transcoding strategies, mapping CELP parameters in the CELP parameter space according to the selected coding strategy, performing Linear Prediction analysis if specified by the transcoding strategy, perceptually weighting the speech using with tuned weighting factors, and searching for adaptive codebook and fixed-codebook parameters to obtain a quantized set of destination codec parameters.

    摘要翻译: 一种用于语音代码转换器的方法和装置,其使用使用调谐加权因子的感知加权,将代表根据第一语音压缩标准编码的数据的比特流转换为表示数据帧的比特流,使得 第二语音压缩标准的比特流,以产生比可比较的串联转码解决方案更高质量的解码语音信号。 该方法包括预先计算针对特定源和目标编解码器对优化的感知加权滤波器的加权因子,预配置转码策略,根据所选择的编码策略映射CELP参数空间中的CELP参数,执行线性预测分析,如果 由转码策略指定,用调谐的加权因子感知加权语音,并搜索自适应码本和固定码本参数以获得量化的目的地编解码器参数集合。

    Method and apparatus for a thin audio codec
    9.
    发明授权
    Method and apparatus for a thin audio codec 有权
    薄音频编解码器的方法和装置

    公开(公告)号:US07848922B1

    公开(公告)日:2010-12-07

    申请号:US11890263

    申请日:2007-08-02

    IPC分类号: G10L19/04

    CPC分类号: G10L19/16

    摘要: An apparatus and method for encoding and decoding a voice signal. The apparatus includes an encoder configured to generate an output bitstream signal from an input voice signal. The output bitstream signal is associated with at least a first standard of a first plurality of CELP voice compression standards. Additionally, the apparatus includes a decoder configured to generate an output voice signal from an input bitstream signal. The input bitstream signal is associated with at least a first standard of a second plurality of CELP voice compression standards. The CELP encoder includes a plurality of codec-specific encoder modules. Additionally, the CELP encoder includes a plurality of generic encoder modules. The CELP decoder includes a plurality of codec-specific decoder modules. Additionally, the CELP decoder includes a plurality of generic decoder modules.

    摘要翻译: 一种用于对语音信号进行编码和解码的装置和方法。 该装置包括:编码器,被配置为从输入语音信号生成输出比特流信号。 输出比特流信号与第一多个CELP语音压缩标准的至少第一标准相关联。 另外,该装置包括被配置为从输入比特流信号产生输出语音信号的解码器。 输入比特流信号与第二多个CELP语音压缩标准的至少第一标准相关联。 CELP编码器包括多个编解码器专用编码器模块。 此外,CELP编码器包括多个通用编码器模块。 CELP解码器包括多个编解码器专用解码器模块。 此外,CELP解码器包括多个通用解码器模块。

    Method and apparatus for audio transcoding
    10.
    发明授权
    Method and apparatus for audio transcoding 有权
    用于音频转码的方法和装置

    公开(公告)号:US07805292B2

    公开(公告)日:2010-09-28

    申请号:US11738822

    申请日:2007-04-23

    IPC分类号: G10L21/00 G10L19/00

    CPC分类号: G10L19/173

    摘要: An apparatus for transcoding an audio signal between a CELP-based coder and a hybrid coder includes a source bitstream unwrapper configured to receive a source bitstream, extract one or more CELP compression parameters from the source bitstream, and construct an audio signal vector from the source bitstream while maintaining the one or more extracted CELP compression parameters. The apparatus also includes a frame interpolator coupled to the source bitstream unwrapper and a compression parameter converter coupled to frame interpolator. The compression parameter converter is configured to calculate output compression parameters from at least one of the interpolated compression parameters or the one or more extracted CELP compression parameters. Additionally, the apparatus includes a destination bitstream wrapper coupled to the compression parameter converter and a mapping parameter tuner coupled to the frame interpolator. The mapping parameter tuner is configured to select one or more parameters for use by the compression parameter converter.

    摘要翻译: 一种用于在基于CELP的编码器和混合编码器之间对音频信号进行代码转换的装置包括:源比特流解包器,被配置为接收源比特流,从源比特流提取一个或多个CELP压缩参数,并从源构建音频信号向量 同时保持一个或多个提取的CELP压缩参数。 该装置还包括耦合到源比特流不包装器的帧内插器和耦合到帧内插器的压缩参数转换器。 压缩参数转换器被配置为从内插的压缩参数或一个或多个提取的CELP压缩参数中的至少一个来计算输出压缩参数。 另外,该装置包括耦合到压缩参数转换器的目的比特流封装器和耦合到帧内插器的映射参数调谐器。 映射参数调谐器被配置为选择一个或多个参数供压缩参数转换器使用。