Adaptations of analysis or synthesis weighting windows for transform coding or decoding
    21.
    发明授权
    Adaptations of analysis or synthesis weighting windows for transform coding or decoding 有权
    用于变换编码或解码的分析或综合加权窗口的适应

    公开(公告)号:US09368121B2

    公开(公告)日:2016-06-14

    申请号:US14232564

    申请日:2012-07-09

    摘要: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.

    摘要翻译: 提供了一种通过使用应用于采样帧的分析或合成加权窗口进行变换对数字音频信号进行编码或解码的方法和装置。 该方法包括为给定的初始尺寸N的变换提供的初始窗口的不规则采样,以应用与N不同的尺寸M的二次变换。

    Spectral enhancing method and device
    22.
    发明授权
    Spectral enhancing method and device 有权
    光谱增强方法和装置

    公开(公告)号:US08239208B2

    公开(公告)日:2012-08-07

    申请号:US12757183

    申请日:2010-04-09

    IPC分类号: G06F15/00 G10L11/00 G10L19/00

    CPC分类号: G10L21/038

    摘要: The invention concerns a method for spectral enhancement and a device therefor. The inventive method is a method for enhancing spectral content of a signal having an incomplete spectrum including a first spectral band, the method including the following steps: at least transposing the spectral content of the first band into a second spectral band not included in the spectrum to generate a transposed spectrum signal, with spectrum limited to the second spectral band; transforming the spectrum of the transposed spectrum signal to obtain an enhancing signal; combining the incomplete spectrum signal and the enhancing signal to produce a spectrum enhanced signal. The invention is characterized in that the spectral content is subjected to a whitening step.

    摘要翻译: 本发明涉及一种用于光谱增强的方法及其装置。 本发明的方法是一种用于增强具有包括第一频谱带的不完整频谱的信号的频谱含量的方法,该方法包括以下步骤:至少将第一频带的频谱内容转换成不包括在频谱中的第二频谱带 以产生频谱受限于第二光谱带的转置频谱信号; 变换频谱信号的频谱以获得增强信号; 组合不完整的频谱信号和增强信号以产生频谱增强信号。 本发明的特征在于对光谱含量进行白化步骤。

    Method and device for spectral reconstruction of an audio signal
    23.
    发明申请
    Method and device for spectral reconstruction of an audio signal 有权
    用于音频信号的频谱重建的方法和装置

    公开(公告)号:US20060265087A1

    公开(公告)日:2006-11-23

    申请号:US10547759

    申请日:2004-03-03

    IPC分类号: G06F17/00

    摘要: An audio signal encoded in the form of data is spectrally reconstructed so part of the frequency spectrum of the audio signal is decoded with a spectral band limiting encoder (i.e., a core encoder). The complementary part of the frequency spectrum of the audio signal is decoded with an extension encoder. Information representing at least one cut-off frequency of the signal decoded by the core decoder is used to select, from amongst the data to be decoded or the data decoded with the extension decoder.

    摘要翻译: 以数据形式编码的音频信号进行频谱重建,使得音频信号的频谱的一部分用频谱带限制编码器(即核心编码器)解码。 音频信号的频谱的互补部分用扩展编码器解码。 用于表示由核心解码器解码的信号的至少一个截止频率的信息用于从要解码的数据或用扩展解码器解码的数据中进行选择。

    Delay-optimized overlap transform, coding/decoding weighting windows
    24.
    发明授权
    Delay-optimized overlap transform, coding/decoding weighting windows 有权
    延迟优化重叠变换,编码/解码加权窗口

    公开(公告)号:US08847795B2

    公开(公告)日:2014-09-30

    申请号:US14128718

    申请日:2012-06-26

    摘要: Coding/decoding of a digital signal, consisting of successive blocks of samples, the coding being of the transform with overlap type and comprising, upon analysis, the application of a weighting window to two blocks of M successive samples. In particular, this weighting window is asymmetric and comprises four distinct portions extending successively over the two aforesaid blocks, with: a first portion, increasing over a first interval of samples, a second portion, constant at a value of 1 over a second interval, a third portion, decreasing over a third interval, and a fourth portion, constant at a value of 0 over a fourth interval.

    摘要翻译: 由连续的样本块组成的数字信号的编码/解码,编码是具有重叠类型的变换,并且在分析时包括将加权窗口应用于M个连续采样的两个块。 特别地,该加权窗口是不对称的,并且包括在两个上述块上连续延伸的四个不同部分,其中:第一部分,在第一采样间隔上增加第二部分,在第二间隔上恒定为值1, 第三部分,在第三间隔上减小,第四部分在第四个间隔内以0值恒定。

    ADAPTATIONS OF ANALYSIS OR SYNTHESIS WEIGHTING WINDOWS FOR TRANSFORM CODING OR DECODING
    25.
    发明申请
    ADAPTATIONS OF ANALYSIS OR SYNTHESIS WEIGHTING WINDOWS FOR TRANSFORM CODING OR DECODING 有权
    适应变换编码或解码的分析或合成称重窗口

    公开(公告)号:US20140142930A1

    公开(公告)日:2014-05-22

    申请号:US14232564

    申请日:2012-07-09

    IPC分类号: G10L19/00

    摘要: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.

    摘要翻译: 提供了一种通过使用应用于采样帧的分析或合成加权窗口进行变换对数字音频信号进行编码或解码的方法和装置。 该方法包括为给定的初始尺寸N的变换提供的初始窗口的不规则采样,以应用与N不同的尺寸M的二次变换。

    Method of coding a source audio signal, corresponding coding device, decoding method and device, signal, computer program products
    26.
    发明授权
    Method of coding a source audio signal, corresponding coding device, decoding method and device, signal, computer program products 有权
    编码源音频信号的方法,相应的编码装置,解码方法和装置,信号,计算机程序产品

    公开(公告)号:US08224660B2

    公开(公告)日:2012-07-17

    申请号:US12282731

    申请日:2007-03-12

    IPC分类号: G10L19/00

    CPC分类号: G10L19/035

    摘要: A method is provided for coding a source audio signal. The method includes the following steps: coding a quantization profile of coefficients representative of at least one transform of the source audio signal, according to at least to distinct coding techniques, delivering at least two sets of data representative of a quantization profile; selecting one of the sets of data representative of a quantization profile, as a function of a predetermined selection criterion; transmitting and/or storing the set of data representative of a selected quantization profile and an indicator representative of the corresponding coding technique.

    摘要翻译: 提供了一种用于对源音频信号进行编码的方法。 该方法包括以下步骤:根据至少不同的编码技术编码表示源音频信号的至少一个变换的系数的量化简档,传送表示量化简档的至少两组数据; 根据预定的选择标准选择表示量化曲线的数据组中的一个; 发送和/或存储表示所选择的量化简档的数据集合和表示对应编码技术的指示符。

    METHOD OF CODING A SOURCE AUDIO SIGNAL, CORRESPONDING CODING DEVICE, DECODING METHOD AND DEVICE, SIGNAL, COMPUTER PROGRAM PRODUCTS
    27.
    发明申请
    METHOD OF CODING A SOURCE AUDIO SIGNAL, CORRESPONDING CODING DEVICE, DECODING METHOD AND DEVICE, SIGNAL, COMPUTER PROGRAM PRODUCTS 有权
    编码源音频信号的方法,相应的编码设备,解码方法和设备,信号,计算机程序产品

    公开(公告)号:US20090083043A1

    公开(公告)日:2009-03-26

    申请号:US12282731

    申请日:2007-03-12

    IPC分类号: H04B1/66

    CPC分类号: G10L19/035

    摘要: A method is provided for coding a source audio signal. The method includes the following steps: coding a quantization profile of coefficients representative of at least one transform of the source audio signal, according to at least to distinct coding techniques, delivering at least two sets of data representative of a quantization profile; selecting one of the sets of data representative of a quantization profile, as a function of a predetermined selection criterion; transmitting and/or storing the set of data representative of a selected quantization profile and an indicator representative of the corresponding coding technique.

    摘要翻译: 提供了一种用于对源音频信号进行编码的方法。 该方法包括以下步骤:根据至少不同的编码技术编码表示源音频信号的至少一个变换的系数的量化简档,传送表示量化简档的至少两组数据; 根据预定的选择标准选择表示量化曲线的数据组中的一个; 发送和/或存储表示所选择的量化简档的数据集合和表示对应编码技术的指示符。

    Spectral enhancing method and device
    28.
    发明授权
    Spectral enhancing method and device 有权
    光谱增强方法和装置

    公开(公告)号:US07742927B2

    公开(公告)日:2010-06-22

    申请号:US10257916

    申请日:2001-04-12

    IPC分类号: G06F15/00 G10L11/00 G10L19/00

    CPC分类号: G10L21/038

    摘要: The present invention relates to a spectral enhancement method and to an apparatus carrying out this method. The method of the invention enhanced the spectral content of a signal having an incomplete spectrum including a first spectral frequency band, the method comprising the following stages: at least one spectral content transposition of said first frequency band into a second spectral frequency band not included in said spectrum for the purpose of generating a transposed spectrum signal having a spectrum limited to said second spectral frequency band, shaping the spectrum of the transposed spectrum signal for the purpose of producing an enhanced signal, combining an incomplete spectrum signal and the enhanced signal for the purpose of producing an enhanced spectrum signal, characterized in that said spectral content is subject to a stage of whitening.

    摘要翻译: 本发明涉及一种频谱增强方法和涉及该方法的装置。 本发明的方法增强了具有包括第一频谱频带的不完整频谱的信号的频谱含量,该方法包括以下阶段:将所述第一频带的至少一个频谱内容转置成不包括在第二频谱频带中的第二频谱频带 所述频谱用于产生具有限于所述第二频谱频带的频谱的转置频谱信号的目的,对转置的频谱信号的频谱进行整形,以产生增强的信号,将不完整的频谱信号和增强的信号组合为 产生增强光谱信号的目的在于,其特征在于所述光谱含量经受白化阶段。

    Method and Device for the Hierarchical Coding of a Source Audio Signal and Corresponding Decoding Method and Device, Programs and Signals
    29.
    发明申请
    Method and Device for the Hierarchical Coding of a Source Audio Signal and Corresponding Decoding Method and Device, Programs and Signals 有权
    用于源音频信号的分层编码的方法和装置以及相应的解码方法和装置,程序和信号

    公开(公告)号:US20090171672A1

    公开(公告)日:2009-07-02

    申请号:US12278547

    申请日:2007-02-05

    IPC分类号: G10L19/00

    摘要: A method of hierarchically coding a source audio signal in the form of a data stream (200) comprising a base level (207) and at least two hierarchical enhancement levels (208, 209, 210, 211), each of said levels being organized in successive frames.At least one frame of at least one enhancement level (208, 209, 210, 211) has a duration less than the duration of at least one frame of said base level (207), and at least one indication representative of an order used for a set of frames corresponding to the duration of at least one frame of said base level (207) is inserted into said stream.

    摘要翻译: 以包括基本电平(207)和至少两个分层增强电平(208,209,210,211)的数据流(200)的形式对源音频信号进行分层编码的方法,每个所述电平被组织在 连续帧。 至少一个至少一个增强级别(208,209,210,211)的帧具有小于所述基本级(207)的至少一个帧的持续时间的持续时间,并且至少一个指示代表用于 对应于所述基本电平(207)的至少一个帧的持续时间的一组帧被插入到所述流中。

    DELAY-OPTIMIZED OVERLAP TRANSFORM, CODING/DECODING WEIGHTING WINDOWS
    30.
    发明申请
    DELAY-OPTIMIZED OVERLAP TRANSFORM, CODING/DECODING WEIGHTING WINDOWS 有权
    延迟优化的重叠变换,编码/解码称重窗口

    公开(公告)号:US20140139362A1

    公开(公告)日:2014-05-22

    申请号:US14128718

    申请日:2012-06-26

    IPC分类号: H03M7/00

    摘要: Coding/decoding of a digital signal, consisting of successive blocks of samples, the coding being of the transform with overlap type and comprising, upon analysis, the application of a weighting window to two blocks of M successive samples. In particular, this weighting window is asymmetric and comprises four distinct portions extending successively over the two aforesaid blocks, with: a first portion, increasing over a first interval of samples, a second portion, constant at a value of 1 over a second interval, a third portion, decreasing over a third interval, and a fourth portion, constant at a value of 0 over a fourth interval.

    摘要翻译: 由连续的样本块组成的数字信号的编码/解码,编码是具有重叠类型的变换,并且在分析时包括将加权窗口应用于M个连续采样的两个块。 特别地,该加权窗口是不对称的,并且包括在两个上述块上连续延伸的四个不同部分,其中:第一部分,在第一采样间隔上增加第二部分,在第二间隔上恒定为值1, 第三部分,在第三间隔上减小,第四部分在第四个间隔内以0值恒定。