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公开(公告)号：US20080184871A1
公开(公告)日：2008-08-07
申请号：US11908321
申请日：2006-02-01
申请人： Marek Szczerba , Albertus Cornelis Den Brinker , Andreas Johannes Gerrits , Arnoldus Werner Johannes Oomen , Marc Klein Middelink
发明人： Marek Szczerba , Albertus Cornelis Den Brinker , Andreas Johannes Gerrits , Arnoldus Werner Johannes Oomen , Marc Klein Middelink
IPC分类号： G10H1/06
CPC分类号： G10H7/00 , G10H1/22 , G10H2230/041 , G10H2250/495
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）。
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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。
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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。
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4.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。
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公开(公告)号：US07085724B2
公开(公告)日：2006-08-01
申请号：US10046634
申请日：2002-01-14
申请人： Albertus Cornelis Den Brinker , Arnoldus Werner Johannes Oomen , Fransiscus Marinus Jozephus De Bont , Erik Gosuinus Petrus Schuijers
发明人： Albertus Cornelis Den Brinker , Arnoldus Werner Johannes Oomen , Fransiscus Marinus Jozephus De Bont , Erik Gosuinus Petrus Schuijers
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。
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公开(公告)号：US06925434B2
公开(公告)日：2005-08-02
申请号：US09804022
申请日：2001-03-12
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).
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公开(公告)号：US20090070118A1
公开(公告)日：2009-03-12
申请号：US11718611
申请日：2005-11-03
申请人： Albertus Cornelis Den Brinker , Felipe Riera Palou , Arnoldus Werner Johannes Oomen , Jean-Bernard Herve Marie Rault , David Sylvain Thierry Virette , Pierrick Jean-Louise Marie Philippe
发明人： Albertus Cornelis Den Brinker , Felipe Riera Palou , Arnoldus Werner Johannes Oomen , Jean-Bernard Herve Marie Rault , David Sylvain Thierry Virette , Pierrick Jean-Louise Marie Philippe
IPC分类号： G10L19/00
CPC分类号： G10L19/16 , G10L19/0204 , G10L19/08
摘要： An audio encoding device (100) comprises first encoding means (101, 111) for encoding transient signal components and/or sinusoidal signal components of an audio signal (x(n)) and producing a residual signal (z(n)), and second encoding means for encoding the residual signal. The second encoding means comprise filter means (122) for selecting at least two frequency bands of the residual signal. The selected frequency bands (LF, HF) of the residual signal (z(n)) are encoded by a first encoding unit (123) and a second encoding unit (124) respectively. The first encoding unit (123) may comprise a waveform encoder, such as a time-domain encoder, while the second encoding unit (124) may comprise a noise encoder.
摘要翻译： 音频编码装置（100）包括用于编码音频信号（x（n））的瞬态信号分量和/或正弦信号分量并产生残余信号（z（n））的第一编码装置， 用于对残差信号进行编码的第二编码装置。 第二编码装置包括用于选择残余信号的至少两个频带的滤波器装置（122）。 残差信号（z（n））的选定频带（LF，HF）分别由第一编码单元（123）和第二编码单元（124）编码。 第一编码单元（123）可以包括诸如时域编码器的波形编码器，而第二编码单元（124）可以包括噪声编码器。
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公开(公告)号：US07146324B2
公开(公告)日：2006-12-05
申请号：US10278386
申请日：2002-10-23
申请人： Albertus Cornelis Den Brinker , Andreas Johannes Gerrits , Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Christophe Alain Bernard Hoeppe
发明人： Albertus Cornelis Den Brinker , Andreas Johannes Gerrits , Erik Gosuinus Petrus Schuijers , Gerard Herman Hotho , Christophe Alain Bernard Hoeppe
IPC分类号： G10L19/00
CPC分类号： G10L19/02
摘要： Coding of an audio signal is provided where an indicator of the frequency variation of sinusoidal components of the signal is used in the tracking algorithm of a sinusoidal coder where sinusoidal parameters from appropriate sinusoids from consecutive segments are linked. By applying an indicator such as a warp factor or polynomial fitting, more accurate tracks are obtained. As a result, the sinusoids can be encoded more efficiently. Furthermore, a better audio quality can be obtained by improved phase continuation.
摘要翻译： 提供音频信号的编码，其中在正弦曲线编码器的跟踪算法中使用信号的正弦分量的频率变化的指示符，其中来自连续段的适当的正弦曲线的正弦参数被链接。 通过应用诸如翘曲因子或多项式拟合的指示器，获得更准确的轨迹。 结果，可以更有效地编码正弦波。 此外，通过改进相位延续可以获得更好的音频质量。
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公开(公告)号：US07640156B2
公开(公告)日：2009-12-29
申请号：US10564656
申请日：2004-07-08
IPC分类号： G10L19/00
CPC分类号： G10L19/093
摘要： In a sinusoidal audio encoder a number of sinusoids are estimated per audio segment. A sinusoid is represented y frequency, amplitude and phase. Normally, phase is quantised independent of frequency The invention uses a frequency dependent quantisation of phase, and in particular the low frequencies are quantised using smaller quantisation intervals than at higher frequencies. Thus, the unwrapped phases of the lower frequencies are quantised more accurately, possibly with a smaller quantisation range, than the phases of the higher frequencies. The invention gives a significant improvement in decoded signal quality, especially for low bit-rate quantisers.
摘要翻译： 在正弦音频编码器中，每个音频段估计出多个正弦波。 正弦曲线表示y频率，振幅和相位。 通常，相位与频率无关地量化本发明使用相位的频率相关量化，特别是使用比较高频率更小的量化间隔量化低频。 因此，与较高频率的相位相比，更准确地量化更低频率的展开相位，可能具有较小的量化范围。 本发明给出了解码信号质量的显着改进，特别是对于低比特率量化器。
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公开(公告)号：US07587313B2
公开(公告)日：2009-09-08
申请号：US10598796
申请日：2005-03-08
IPC分类号： G10L19/14
CPC分类号： G10L19/20 , G10L19/022 , G10L19/093
摘要： The method creates an audio stream comprising tracks of sinusoidal components linked across a plurality of sequential time segments. Segments in each track are weighted with a normal window (WI, W2, W3), and consecutive segments have a normal period of overlap (0) of their trailing edges and leading edges. Segments in which a transient5 component is determined are weighted with a first modified window (WIm) having a modified trailing edge, and the following segment in the track is weighted with a second modified window (W2m) having a modified leading edge, so that the modified trailing edge and the modified leading edge have a modified period of overlap (0m) that comprises the transient component and that is shorter than the normal period of overlap (0), and wherein the audio stream includes sinusoidal codes representing the frequency and the transient. According to the invention, the modified period of overlap (0m) depends on the frequency value (f).
摘要翻译： 该方法创建包括跨多个连续时间段链接的正弦分量的轨道的音频流。 每个轨道中的段用正常窗口（WI，W2，W3）加权，并且连续的段具有其后沿和前沿的正常重叠周期（0）。 确定了瞬态5分量的分段用具有修改的后沿的第一修改窗口（WIm）加权，并且轨道中的下一分段被加权具有修改的前沿的第二修改窗口（W2m），使得 经修改的后沿和修改的前沿具有修改的重叠周期（0m），其包括瞬态分量并且短于正常重叠周期（0），并且其中音频流包括表示频率和瞬态的正弦代码 。 根据本发明，修改的重叠周期（0m）取决于频率值（f）。
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