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1. 发明申请

WO2004006225A1 SINUSOIDAL AUDIO CODING 审中-公开
标题翻译： SINUSOIDAL音频编码
公开(公告)号：WO2004006225A1
公开(公告)日：2004-01-15
申请号：PCT/IB2003/002746
申请日：2003-06-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
发明人： SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/02
CPC分类号： G10L19/093
摘要： Coding (1) an audio signal (x) comprises providing a respective set of sampled signal values for each of a plurality of sequential segments. The sampled signal values are analysed (130) to generate one or more sinusoidal components for each of the plurality of sequential segments. The sinusoidal components are linked across a plurality of sequential segments. Sinusoidal codes (CS) comprise tracks of linked sinusoidal components for each of the plurality of sequential segments. Each track comprises a frequency and amplitude for a sinusoidal component in a starting segment of a track whereas selected tracks include an indicator that no phase is included for said starting segment.
摘要翻译：编码（1）音频信号（x）包括为多个连续片段中的每一个提供相应的一组采样信号值。分析采样信号值（130）以为多个连续段中的每一个生成一个或多个正弦分量。正弦分量连接在多个连续片段上。正弦码（CS）包括用于多个连续片段中的每一个的链接的正弦分量的轨道。每个轨道包括轨道的起始段中的正弦分量的频率和幅度，而所选择的轨道包括用于所述起始段不包括相位的指示符。

2. 发明申请

WO2004086817A2 CODING OF MAIN AND SIDE SIGNAL REPRESENTING A MULTICHANNEL SIGNAL 审中-公开
标题翻译：主要和信号的编码表示多通道信号
公开(公告)号：WO2004086817A2
公开(公告)日：2004-10-07
申请号：PCT/IB2004/050288
申请日：2004-03-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , SLUIJTER, Robert, J.
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , SLUIJTER, Robert, J.
IPC分类号： H04S
CPC分类号： G10L19/008 , H04S1/007 , H04S2420/03
摘要： The present invention relates to a method of encoding a main and a side signal that are generated by the first step of parametric stereo encoding. when encoding according to the present invention, firstly, the relation between the power spectral energies of the main and the side signal is kept intact per psycho acoustical band. Secondly, the side signal has to be uncorrelated with the main signal in psycho acoustical sense. the method of encoding the main and the side signal, according to the present invention, is twofold. Firstly, a filter is estimated which is able to re-instate the desired spectral amplitude relation and the temporal envelope.
摘要翻译：本发明涉及一种通过参数立体声编码的第一步骤生成的主信号和侧信号的编码方法。当根据本发明的编码时，首先，主要和侧面信号的功率谱能量之间的关系在每个心理声学带保持完整。其次，侧面信号必须与心理声学中的主要信号不相关。根据本发明的编码主信号和侧信号的方法是双重的。首先，估计能够重新设定期望的频谱幅度关系和时间包络的滤波器。

3. 发明申请

WO2004051627A1 AUDIO CODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2004051627A1
公开(公告)日：2004-06-17
申请号：PCT/IB2003/005019
申请日：2003-11-06
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J.
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J.
IPC分类号： G10L19/08
CPC分类号： G10L19/093
摘要： Coding of an audio signal represented by a respective set of sampled signal values for each of a plurality of sequential segments is disclosed. The sampled signal values are analysed (40) to determine one or more sinusoidal components for each of the plurality of sequential segments. The sinusoidal components are linked (42) across a plurality of sequential segments to provide sinusoidal tracks. For each sinusoidal track, a phase comprising a generally monotonically changing value is determined and an encoded audio stream including sinusoidal codes (r) representing said phase is generated (46).
摘要翻译：公开了由多个连续段中的每一个的相应的一组采样信号值表示的音频信号的编码。分析采样的信号值（40）以确定多个连续段中的每一个的一个或多个正弦分量。正弦分量连接（42）跨越多个顺序段以提供正弦曲线。对于每个正弦曲线，确定包括通常单调变化的值的相位，并且生成包括表示所述相位的正弦代码（r）的编码音频流（46）。

4. 发明申请

WO2005122146A1 AUDIO ENCODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2005122146A1
公开(公告)日：2005-12-22
申请号：PCT/IB2005/051821
申请日：2005-06-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , RIERA PALOU, Felipe
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , RIERA PALOU, Felipe
IPC分类号： G10L19/14
CPC分类号： G10L19/06
摘要： A hybrid sinusoidal/pulse excitation encoder has been recently proposed for constructing a scalable audio encoder. The base layer consisting of data supplied by the sinusoidal encoder retains the main features of the input signal achieving medium to high quality audio at a very low bit rate. Quality can be further enhanced by adding excitation signal layers associated with a decreasing decimation that increasingly model more subtle aspects of the original signal. The invention provides a method of mixing the different excitation signal layers so that the full concept of scalability is realised without compromising the quality of the encoded signals. The mixing is controlled via a quality parameter that weights the significance of previous layers when constructing a new higher layer.
摘要翻译：近来已经提出了一种用于构建可伸缩音频编码器的混合正弦/脉冲激励编码器。由正弦编码器提供的数据组成的基本层保留输入信号的主要特征，以非常低的比特率实现中等到高质量的音频。通过添加与减少抽取相关联的激励信号层，可以进一步提高质量，从而越来越多地模拟原始信号的更微妙方面。本发明提供了一种混合不同激励信号层的方法，从而实现可扩展性的全部概念，而不损害编码信号的质量。混合是通过质量参数进行控制的，质量参数在构建新的较高层时对先前层的重要性进行加权。

5. 发明申请

WO2004057575A2 SINUSOID SELECTION IN AUDIO ENCODING 审中-公开
标题翻译： SINUSOID选择音频编码
公开(公告)号：WO2004057575A2
公开(公告)日：2004-07-08
申请号：PCT/IB2003/005346
申请日：2003-11-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
发明人： GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/00
CPC分类号： G10L19/093
摘要： A method of encoding (1) an audio signal (x(t)) by representing (12) at least part of said audio signal by a plurality of sinusoids, the method comprising the steps of performing an analysis on a first segment of said audio signal, selecting candidate sinusoids based on said analysis, defining for at least one of the candidate sinusoids a local frequency band around said candidate sinusoid's frequency, combining amplitudes of frequency components within said local frequency band from which at least one of the candidate sinusoids within said local frequency band is excluded, and selecting said candidate sinusoid as a selected sinusoid in dependence on the combination of amplitudes. The selection of sinusoids according to the invention will result in a smaller number of sinusoids to be encoded for a given audio quality, which is advantageous in terms of bit-rate for a given audio quality.
摘要翻译：一种通过用多个正弦曲线表示（12）所述音频信号的至少一部分来对（1）音频信号（x（t））进行编码的方法，所述方法包括以下步骤：对所述音频的第一段进行分析信号，基于所述分析选择候选正弦曲线，为所述候选正弦曲线中的至少一个限定所述候选正弦波频率周围的本地频带，组合所述本地频带内的频率分量的幅度，所述频率分量中的至少一个所述候选正弦排除本地频带，并且根据振幅的组合将所述候选正弦波选择为选择的正弦波。根据本发明的正弦曲线的选择将导致对于给定音频质量而要编码的较少数量的正弦曲线，这在给定音频质量的比特率方面是有利的。

6. 发明申请

WO2006000956A1 AUDIO ENCODING AND DECODING 审中-公开
标题翻译：音频编码和解码
公开(公告)号：WO2006000956A1
公开(公告)日：2006-01-05
申请号：PCT/IB2005/051972
申请日：2005-06-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , RIERA PALOU, Felipe
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , RIERA PALOU, Felipe
IPC分类号： G10L19/10
CPC分类号： G10L19/10 , G10L19/113
摘要： A method of encoding a digital audio signal, wherein for each time segment the signal is spectrally flattened to obtain a spectrally flattened signal (r) and possibly spectral flattening parameters (LPP). The spectrally flattened signal is modelled by an excitation signal comprising a first partial excitation signal (p x ) conforming to an excitation signal generated by an RPE or CELP technique, and a second partial excitation signal (P Ep ) being a set of extra pulses with arbitrary positions and amplitudes. An audio bit stream as comprising the first and second partial excitation signals is generated. The extra pulses can be added to the excitation signal at positions in time that correspond to the time of occurrence of the spike, or preferably at positions in time of an RPE time grid.
摘要翻译：一种对数字音频信号进行编码的方法，其中对于每个时间段，信号被频谱平坦化以获得频谱平坦化信号（r）和可能的频谱平坦化参数（LPP）。光谱平坦化信号由包括第一部分激励信号（p

7. 发明申请

WO2005091275A1 AUDIO CODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2005091275A1
公开(公告)日：2005-09-29
申请号：PCT/IB2005/050847
申请日：2005-03-08
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
发明人： GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/08
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）。

8. 发明申请

WO2004057576A1 SINUSOID SELECTION IN AUDIO ENCODING 审中-公开
标题翻译： SINUSOID选择音频编码
公开(公告)号：WO2004057576A1
公开(公告)日：2004-07-08
申请号：PCT/IB2003/005320
申请日：2003-11-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
发明人： GERRITS, Andreas, J. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/08
CPC分类号： G10L19/093
摘要： A method of encoding (1) an audio signal (x(t)) by representing (12) at least part of the audio signal by a plurality of sinusoids, the method comprising the steps of performing an analysis on a first segment of said audio signal, selecting candidate sinusoids based on said analysis, determining for at least one of the candidate sinusoids a phase consistency defined by an extent to which a phase of said candidate sinusoid at a certain moment in time can be predicted from a phase of said candidate sinusoid determined at another moment in time, and selecting said candidate sinusoid as a selected sinusoid when its phase consistency is above a predetermined threshold. The selection of sinusoids according to the invention will result in a smaller number of sinusoids to be encoded for a given audio quality, which is advantageous in terms of bit-rate for a given audio quality.
摘要翻译：一种通过用多个正弦曲线表示（12）至少部分音频信号来对（1）音频信号（x（t））进行编码的方法，所述方法包括以下步骤：对所述音频的第一片段进行分析信号，基于所述分析来选择候选正弦波，确定候选正弦曲线中的至少一个候选正弦曲线，其相位一致性定义在从所述候选正弦曲线的相位可以预测在某一特定时刻的所述候选正弦曲线的相位的程度在时间上的另一时刻确定，并且当其相位一致性高于预定阈值时，将所述候选正弦波选择为选择的正弦曲线。根据本发明的正弦曲线的选择将导致对于给定音频质量而要编码的较少数量的正弦曲线，这在给定音频质量的比特率方面是有利的。

9. 发明申请

WO2006085244A1 SOUND SYNTHESIS 审中-公开
标题翻译：声音合成
公开(公告)号：WO2006085244A1
公开(公告)日：2006-08-17
申请号：PCT/IB2006/050338
申请日：2006-02-01
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SZCZERBA, Marek , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , OOMEN, Arnoldus, W., J. , KLEIN MIDDELINK, Marc
发明人： SZCZERBA, Marek , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , OOMEN, Arnoldus, W., J. , KLEIN MIDDELINK, Marc
IPC分类号： G10H7/00
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：设置（1）用于合成由参数集合表示的声音，每个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（例如瞬变和正弦波）的其它参数。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），用于根据诸如幅度或能量的感知相关性值从总数量集合中选择有限数量的集合。该装置还包括用于仅使用所选择的组的噪声参数来合成噪声分量的合成单元（3）。

10. 发明申请

WO2005055204A1 AUDIO CODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2005055204A1
公开(公告)日：2005-06-16
申请号：PCT/IB2004/052539
申请日：2004-11-24
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , GERRITS, Andreas, J. , DEN BRINKER, Albertus, C. , RIERA PALOU, Felip
发明人： GERRITS, Andreas, J. , DEN BRINKER, Albertus, C. , RIERA PALOU, Felip
IPC分类号： G10L19/14
CPC分类号： G10L19/093 , G10L19/10 , G10L19/24
摘要： An audio coder is arranged to process a respective set of sampled signal values for each of a plurality of sequential segments of an audio signal (x). The coder comprises an analyser (TSA) arranged to analyse the sampled signal values to provide one or more sinusoidal codes (Cs) corresponding to respective sinusoidal components of the audio signal. A subtractor subtracts a signal corresponding to the sinusoidal components from the audio signal to provide a first residual signal (r 1 ). A modeller (SEG) models the frequency spectrum of the first residual signal (r 1 ) by determining first filter parameters (Ps) of a filter which has a frequency response approximating a frequency spectrum of the first residual signal. Another subtractor subtracts a signal corresponding to the first filter parameters from the first residual signal to provide a second residual signal (r 2 ). Another modeller (RPE) models a component (r 2 ,r 3 ) of the second residual signal with a pulse train coder (RPE) to provide respective pulse train parameters (L 0 ). A bit stream generator (15) generates an encoded audio stream (AS) including the sinusoidal codes (Cs), the first filter parameters (Ps) and the pulse train parameters (L 0 ).
摘要翻译：音频编码器被布置成处理音频信号（x）的多个连续片段中的每一个的相应组的采样信号值。编码器包括分析器（TSA），其被布置为分析采样的信号值以提供对应于音频信号的各个正弦分量的一个或多个正弦码（Cs）。减法器从音频信号中减去对应于正弦分量的信号，以提供第一残差信号（r1）。模拟器（SEG）通过确定具有接近于第一残差信号的频谱的频率响应的滤波器的第一滤波器参数（Ps）来对第一残差信号（r1）的频谱进行建模。另一个减法器从第一残差信号中减去对应于第一滤波器参数的信号，以提供第二残差信号（r2）。另一个建模器（RPE）用脉冲序列编码器（RPE）对第二残差信号的分量（r2，r3）建模，以提供相应的脉冲序列参数（L0）。比特流生成器（15）生成包括正弦码（Cs），第一滤波器参数（Ps）和脉冲串参数（L0）的编码音频流（AS）。

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