Linking in parametric encoding
    1.
    发明授权
    Linking in parametric encoding 失效
    链接参数编码

    公开(公告)号:US07085724B2

    公开(公告)日:2006-08-01

    申请号:US10046634

    申请日:2002-01-14

    IPC分类号: G10L19/00 G10L19/02

    CPC分类号: G10L19/02

    摘要: The invention relates to a linking unit 100, a parametric encoder 400 and a method for generating linking information L indicating components of consecutive extended segments sp and sc which may be linked together in order to form a sinusoidal track. The segments sp and sc approximate consecutive segments of a sinusoidal audio or speech signal s. The linking unit comprises a calculating unit 120 for generating a similarity matrix S(m,n) in response to received sinusoidal code data and an evaluating unit 140 for receiving and evaluating said similarity matrix S in order to generate said linking information by selecting those pairs of components m,n the similarity of which is maximal. According to the invention the calculating unit 120 is adapted to calculate the similarity matrix S by additionally considering information about the phase consistency between the components of the extended previous segment sp and the extended current segment sc. In that way the selection of components suitable for being linked together is improved resulting in the definition of correct tracks.

    摘要翻译: 本发明涉及链接单元100,参数编码器400和用于产生链接信息L的方法,该链接信息L指示可以连接在一起的连续扩展段sp和sc的组件,以便形成正弦轨道。 段sp和sc近似正弦音频或语音信号s的连续段。 链接单元包括:计算单元120,用于响应于接收到的正弦码数据生成相似矩阵S(m,n);以及评估单元140,用于接收和评估所述相似矩阵S,以通过选择这些对来生成所述链接信息 的组分m,n的相似性最大。 根据本发明,计算单元120适于通过附加地考虑关于扩展的先前段sp的组件与扩展的当前段sc之间的相位一致性的信息来计算相似度矩阵S. 以这种方式,适合于链接在一起的部件的选择被改进,导致正确轨道的定义。

    Parametric encoding and decoding
    3.
    发明授权
    Parametric encoding and decoding 有权
    参数编码和解码

    公开(公告)号:US09070358B2

    公开(公告)日:2015-06-30

    申请号:US13505758

    申请日:2010-11-05

    IPC分类号: H04R5/00 G10L19/008

    CPC分类号: G10L19/008

    摘要: An encoder for a multi-channel audio signal which comprises a down-mixer (201, 203, 205) for generating a down-mix as a combination of at least a first and second channel signal weighted by respectively a first and second weight with different amplitudes for at least some time-frequency intervals. Furthermore, a circuit (201, 203, 209) generates up-mix parametric data characterizing a relationship between the channel signals as well as characterizing the weights. A circuit generates weight estimates for the encoder weights from the up-mix parametric data; and comprises an up-mixer (407) which recreates the multi channel audio signal by up-mixing the down-mix in response to the up-mix parametric data, the first weight estimate and the second weight estimate. The up-mixing is dependent on the amplitude of at least one of the weight estimate(s).

    摘要翻译: 一种用于多声道音频信号的编码器,包括用于产生下混合器的下混频器(201,203,205),所述下混频器作为至少第一和第二声道信号的组合,分别由不同的第一和第二加权器加权 至少一些时间间隔的振幅。 此外,电路(201,203,209)产生表征信道信号之间的关系以及表征权重的混合参数数据。 电路从混合参数数据生成编码器权重的权重估计; 并且包括上混频器(407),其通过响应于混合参数数据,第一权重估计和第二权重估计,通过向下混合来重新创建多声道音频信号。 上混合取决于至少一个重量估计的振幅。

    Multi-channel audio coding
    4.
    发明授权
    Multi-channel audio coding 有权
    多声道音频编码

    公开(公告)号:US08346564B2

    公开(公告)日:2013-01-01

    申请号:US11909730

    申请日:2006-03-16

    IPC分类号: G10L19/00 G10L21/04

    摘要: A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120). The first unit (110) encodes the multi-channel audio signal (101) into the spatial down-mix (102) and parameters (104). These parameters (104) enable a multi-channel decoder (20) to reconstruct the multi-channel audio signal (203) from the spatial down-mix (102). The second unit (120) generates, from the spatial down-mix (102), parameters (105) that enable the decoder to reconstruct the spatial down-mix (202) from an alternative down-mix (103), e.g. a so-called artistic down-mix that has been manually mixed in a sound studio. In this way, the decoder (20) can efficiently deal with a situation in which an alternative down-mix (103) is received instead of the regular spatial, down-mix (102). In the decoder (20), first the spatial down-mix (202) is reconstructed from the alternative down-mix (103) and the parameters (105). Next, the spatial down-mix (202) is decoded into the multi-channel audio signal (203).

    摘要翻译: 一种用于对多声道音频信号(101)进行编码的多声道音频编码器(10)。 5.1声道音频信号转换成空间缩混(102)。 立体声信号和相关参数(104,105)。 编码器(10)包括第一和第二单元(110,120)。 第一单元(110)将多声道音频信号(101)编码成空间缩混(102)和参数(104)。 这些参数(104)使得多声道解码器(20)能够从空间缩混(102)重建多声道音频信号(203)。 第二单元(120)从空间缩混(102)生成参数(105),使参数(105)能够使解码器从替代的下混合(103)重构空间缩混(202)。 所谓的艺术混合,已经在一个健全的工作室手工混合。 以这种方式,解码器(20)可以有效地处理接收替代的下混合(103)而不是常规的空间,混合(102)的情况。 在解码器(20)中,首先,从替代的下混合(103)和参数(105)重构空间缩混(202)。 接下来,空间缩混(202)被解码为多声道音频信号(203)。

    PARAMETRIC ENCODING AND DECODING
    5.
    发明申请
    PARAMETRIC ENCODING AND DECODING 有权
    参数编码和解码

    公开(公告)号:US20120224702A1

    公开(公告)日:2012-09-06

    申请号:US13505758

    申请日:2010-11-05

    IPC分类号: H04R5/00

    CPC分类号: G10L19/008

    摘要: An encoder for a multi-channel audio signal which comprises a down-mixer (201, 203, 205) for generating a down-mix as a combination of at least a first and second channel signal weighted by respectively a first and second weight with different amplitudes for at least some time-frequency intervals. Furthermore, a circuit (201, 203, 209) generates up-mix parametric data characterizing a relationship between the channel signals as well as characterizing the weights. A circuit generates weight estimates for the encoder weights from the up-mix parametric data; and comprises an up-mixer (407) which recreates the multi channel audio signal by up-mixing the down-mix in response to the up-mix parametric data, the first weight estimate and the second weight estimate. The up-mixing is dependent on the amplitude of at least one of the weight estimate(s).

    摘要翻译: 一种用于多声道音频信号的编码器,包括用于产生下混合器的下混频器(201,203,205),所述下混频器作为至少第一和第二声道信号的组合,分别由具有不同 至少一些时间间隔的振幅。 此外,电路(201,203,209)产生表征信道信号之间的关系以及表征权重的混合参数数据。 电路从混合参数数据生成编码器权重的权重估计; 并且包括上混频器(407),其通过响应于混合参数数据,第一权重估计和第二权重估计,通过向下混合来重新创建多声道音频信号。 上混合取决于至少一个重量估计的幅度。

    Sinusoidal coding including a phase jitter parameter
    6.
    发明授权
    Sinusoidal coding including a phase jitter parameter 有权
    正弦编码包括相位抖动参数

    公开(公告)号:US07739106B2

    公开(公告)日:2010-06-15

    申请号:US09885707

    申请日:2001-06-20

    IPC分类号: G10L19/14

    CPC分类号: G10L19/02

    摘要: Encoding (2) a signal (A) is provided, wherein frequency and amplitude information of at least one sinusoidal component in the signal (A) is determined (20), and sinusoidal parameters (f,a) representing the frequency and amplitude information are transmitted (22), and wherein further a phase jitter parameter (p) is transmitted, which represents an amount of phase jitter that should be added during restoring the sinusoidal component from the transmitted sinusoidal parameters (f,a).

    摘要翻译: 编码(2)信号(A),其中确定信号(A)中的至少一个正弦分量的频率和振幅信息(20),表示频率和振幅信息的正弦参数(f,a) (22),并且其中进一步发送相位抖动参数(p),其表示在从发射的正弦波参数(f,a)恢复正弦分量期间应该添加的相位抖动量。

    Audio coding using a shape function
    7.
    发明授权
    Audio coding using a shape function 有权
    使用形状函数的音频编码

    公开(公告)号:US07499852B2

    公开(公告)日:2009-03-03

    申请号:US11115465

    申请日:2005-04-27

    IPC分类号: G10L21/06

    CPC分类号: G10L19/02

    摘要: Coding (1) of an audio signal is provided including estimating (110) a position of a transient signal component in the audio signal, matching (111,112) a shape function on the transient signal component in case the transient signal component is gradually declining after an initial increase, which shape function has a substantially exponential initial behavior and a substantially logarithmic declining behavior; and including (15) the position and shape parameters describing the shape function in an audio stream (AS).

    摘要翻译: 提供音频信号的编码(1)包括估计(110)音频信号中的瞬态信号分量的位置,匹配(111,112)瞬态信号分量上的形状函数,以便在瞬态信号分量在 初始增加,该形状函数具有基本指数的初始行为和基本上对数的下降行为; 并且包括(15)描述音频流(AS)中的形状函数的位置和形状参数。

    Transmission system with improved encoder and decoder that prevents multiple representations of signal components from occurring
    8.
    发明授权
    Transmission system with improved encoder and decoder that prevents multiple representations of signal components from occurring 失效
    具有改进的编码器和解码器的传输系统,防止发生信号分量的多个表示

    公开(公告)号:US06654723B1

    公开(公告)日:2003-11-25

    申请号:US09830377

    申请日:2001-04-25

    IPC分类号: G10L1902

    CPC分类号: G10L19/0208

    摘要: In a sinusoidal audio encoder it is known to use different time scales for analyzing different parts of the frequency spectrum. In prior art encoders sub-band filtering is used to split the input signal into a number of sub bands. By splitting the input signal into sub-bands, it can happen that a signal component at the boundary of two sub-bands results in a representation in both sub-band signals. This double representation of signal components can lead to several problems when coding these components. According to the present invention it is proposed to use preventing means (46, 48, 58, 68; 88, 92, 96) to avoid signal components to have multiple representations.

    摘要翻译: 在正弦音频编码器中,已知使用不同的时标来分析频谱的不同部分。 在现有技术中,编码器使用子带滤波将输入信号分割成多个子带。 通过将输入信号分割为子带,可能发生两个子带边界处的信号分量导致两个子带信号中的表示。 信号分量的这种双重表示可能导致编码这些组件时的几个问题。 根据本发明,提出了使用防止装置(46,48,58,68; 88,92,96)来避免信号分量具有多个表示。

    Sound Synthesis
    9.
    发明申请
    Sound Synthesis 有权
    合成声

    公开(公告)号:US20080184871A1

    公开(公告)日:2008-08-07

    申请号:US11908321

    申请日:2006-02-01

    IPC分类号: G10H1/06

    摘要: A device (1) is arranged for synthesizing sound represented by sets of parameters, each set comprising noise parameters (NP) representing noise components of the sound and optionally also other parameters representing other components, such as transients and sinusoids. Each set of parameters may correspond with a sound channel, such as a MIDI voice. In order to reduce the computational load, the device comprises a selection unit (2) for selecting a limited number of sets from the total number of sets on the basis of a perceptual relevance value, such as the amplitude or energy. The device further comprises a synthesizing unit (3) for synthesizing the noise components using the noise parameters of the selected sets only.

    摘要翻译: 设备(1)被布置为用于合成由参数集合表示的声音,每组包括表示声音的噪声分量的噪声参数(NP),以及可选地还包括表示其他分量的其它参数,例如瞬变和正弦波。 每组参数可以对应于诸如MIDI声音之类的声音通道。 为了减少计算负荷,该装置包括一个选择单元(2),用于根据诸如振幅或能量之类的感知相关性值从总数量集中选择有限数量的集合。 该装置还包括用于仅使用所选集合的噪声参数合成噪声分量的合成单元(3)。

    Audio coding
    10.
    发明授权

    公开(公告)号:US06925434B2

    公开(公告)日:2005-08-02

    申请号:US09804022

    申请日:2001-03-12

    IPC分类号: G10L19/02 G10L21/06

    CPC分类号: G10L19/02

    摘要: Coding (1) of an audio signal is provided including estimating (110) a position of a transient signal component in the audio signal, matching (111,112) a shape function on the transient signal component in case the transient signal component is gradually declining after an initial increase, which shape function has a substantially exponential initial behavior and a substantially logarithmic declining behavior; and including (15) the position and shape parameters describing the shape function in an audio stream (AS).