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1. 发明申请

WO2009077950A1 AN ADAPTIVE TIME/FREQUENCY-BASED AUDIO ENCODING METHOD 审中-公开
标题翻译：自适应时间/频率的音频编码方法
公开(公告)号：WO2009077950A1
公开(公告)日：2009-06-25
申请号：PCT/IB2008/055244
申请日：2008-12-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , VAN DE PAR, Steven, L., J., D., E.
发明人： DEN BRINKER, Albertus, C. , VAN DE PAR, Steven, L., J., D., E.
IPC分类号： G10L19/14
CPC分类号： G10L19/22 , G10L19/20
摘要： The invention proposes an enhanced adaptive time/frequency-based audio encoding method for encoding an input signal into an output data stream that allows a high efficiencyencoding at a high audio or speech quality. The invention proposes selecting the time-basedencoding mode or thefrequency-based encoding mode for therespective frequency-domain signalofthe plurality of the frequency-domain signals pertaining to the input signalbased on a peakednessofsaid respective frequency-domain signal.
摘要翻译：本发明提出了一种用于将输入信号编码为输出数据流的增强的基于自适应时间/频率的音频编码方法，其允许以高音频或语音质量进行高效率编码。本发明提出选择基于相应频域信号的峰值的与输入信号有关的多个频域信号中的相关频域信号的基于时间的编码模式或基于频率的编码模式。

2. 发明申请

WO2007138511A1 LINEAR PREDICTIVE CODING OF AN AUDIO SIGNAL 审中-公开
标题翻译：音频信号的线性预测编码
公开(公告)号：WO2007138511A1
公开(公告)日：2007-12-06
申请号：PCT/IB2007/051832
申请日：2007-05-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C.
发明人： DEN BRINKER, Albertus, C.
IPC分类号： G10L19/06
CPC分类号： G10L19/06 , G10L21/0264
摘要： An apparatus for linear predictive coding of an audio signal comprises a segmentation processor (201) which generates signal segments for the audio signal. An autocorrelation processor (401) for generates a first autocorrelation sequence for each signal segment and a modification processor (403) generates a second autocorrelation sequence for each signal segment by modifying the first autocorrelation sequence in response to at least one psychoacoustic characteristic. A prediction coefficient processor (405) determines linear predictive coding coefficients for each signal segment in response to the second autocorrelation sequence. The invention allows a low complexity linear encoding which takes into account psychoacoustic considerations thereby allowing an improved perceived coding quality for a given data rate.
摘要翻译：用于音频信号的线性预测编码的装置包括产生音频信号的信号段的分段处理器（201）。一种用于为每个信号段生成第一自相关序列的自相关处理器（401），并且修改处理器（403）响应于至少一个心理声学特性修改第一自相关序列，为每个信号段生成第二自相关序列。预测系数处理器（405）响应于第二自相关序列确定每个信号段的线性预测编码系数。本发明允许低复杂度的线性编码，其考虑到心理声学考虑因素，从而允许针对给定数据速率改进的感知编码质量。

3. 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。

4. 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

5. 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）。

6. 发明申请

WO2005001814A1 IMPROVING QUALITY OF DECODED AUDIO BY ADDING NOISE 审中-公开
标题翻译：通过添加噪声来改善解码音质的质量
公开(公告)号：WO2005001814A1
公开(公告)日：2005-01-06
申请号：PCT/IB2004/051010
申请日：2004-06-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , MYBURG, François, P.
发明人： DEN BRINKER, Albertus, C. , MYBURG, François, P.
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： The present invention relates to a method of encoding and decoding an audio signal. The invention further relates to an arrangement for encoding and decoding an audio signal. The invention further relates to a computer-readable medium comprising a data record indicative of an audio signal and a device for communicating an audio signal having been encoded according to the present invention. By the method of encoding, a double description of the signal is obtained, where the encoding comprises two encoding steps, a first standard encoding and an additional second encoding. The second encoding is able to give a coarse description of the signal, such that a stochastic realization can be made and appropriate parts can be added to the decoded signal from the first decoding. The required description of the second encoder in order to make the realization of a stochastic signal possible requires a relatively low bit rate, while other double/multiple descriptions require a much higher bit rate.
摘要翻译：本发明涉及一种对音频信号进行编码和解码的方法。本发明还涉及用于对音频信号进行编码和解码的装置。本发明还涉及一种包括指示音频信号的数据记录的计算机可读介质和用于传送根据本发明已被编码的音频信号的设备。通过编码的方法，获得对信号的双重描述，其中编码包括两个编码步骤，第一标准编码和附加的第二编码。第二编码能够给出信号的粗略描述，使得可以进行随机实现，并且可以从第一解码将合适的部分添加到解码信号。为了实现随机信号，第二编码器的所需描述可能需要相对低的比特率，而其他双重/多重描述需要高得多的比特率。

7. 发明申请

WO2003102922A1 AUDIO CODING 审中-公开
标题翻译：音频编码
公开(公告)号：WO2003102922A1
公开(公告)日：2003-12-11
申请号：PCT/IB2003/002044
申请日：2003-05-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C.
发明人： DEN BRINKER, Albertus, C.
IPC分类号： G10L19/04
CPC分类号： G10L19/04 , G10L25/12
摘要： A method of encoding (14) an audio signal (x(n)) is disclosed. The method comprises the step of modelling (16) the audio signal in accordance with a frequency sensitizing parameter (() to provide a set of infinite impulse response (IIR) filter type characteristics ((0...k-1) of an order K and capable of being linearly combined with the sensitizing parameter (() to provide an estimate () for the audio signal (x(n)), the IIR type filter model satisfying the requirements of a minimum phase filter. The set of characteristics ((0...k-1) of order K are transformed as a function of the sensitizing parameter (() to provide a set of characteristics (c0...k) of order K+1 compatible with finite impulse response (FIR) filter type characteristics satisfying the requirements of a minimum phase filter. The set of characteristics (c0...k) of order K+1 are normalised to provide a set of characteristics (d1...k) of order K. An encoded audio stream (50) is generated to include representations (LAR,LSFs) of the normalised set of characteristics (d1...k) of order K.
摘要翻译：公开了一种编码（14）音频信号（x（n））的方法。该方法包括根据频率敏化参数（（））对音频信号进行建模（16）的步骤，以提供一组无限脉冲响应（IIR）滤波器类型特征（（0 ... k-1） K，并且能够与敏化参数（（））线性组合以提供音频信号（x（n））的估计（），满足最小相位滤波器要求的IIR型滤波器模型。（0 ... k-1）作为敏化参数（（）的函数被变换，以提供与有限脉冲响应（FIR）兼容的K + 1阶的特性（c0 ... k）集合，滤波器类型特性满足最小相位滤波器的要求，对K + 1级的特性集（c0 ... k）进行归一化，以提供一个等级K的特征（d1 ... k）集合。编码音频生成流（50）以包括秩K的特征（d1 ... k）的表示（LAR，LSF）。

8. 发明申请

WO2009081315A1 ENCODING AND DECODING AUDIO OR SPEECH 审中-公开
标题翻译：编码和解码音频或语音
公开(公告)号：WO2009081315A1
公开(公告)日：2009-07-02
申请号：PCT/IB2008/055250
申请日：2008-12-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , VAN DE PAR, Steven, L., J., D., E.
发明人： DEN BRINKER, Albertus, C. , VAN DE PAR, Steven, L., J., D., E.
IPC分类号： G10L19/00
CPC分类号： G10L19/0204 , G10L19/18 , G10L25/18
摘要： The invention proposes an encoding method for encoding an input signal comprising at least one of audio or speech into an output data stream which comprises the following steps. First step comprises encoding at least a part of the input signal using a frequency domain encoding to produce a first encoded signal. Said frequency domain encoding comprises encoding only frequencies from the part that are below a predetermined frequency. Second step comprises encoding at least some of a remaining part of the input signal using a time domain encoding to produce a second encoded signal. Third step comprises combining the first encoded signal and the second encoded signal to produce the output data stream.
摘要翻译：本发明提出了一种编码方法，用于将包括音频或语音中的至少一个的输入信号编码成输出数据流，该输出数据流包括以下步骤。第一步包括使用频域编码对至少一部分输入信号进行编码以产生第一编码信号。所述频域编码包括仅对来自低于预定频率的部分的频率进行编码。第二步包括使用时域编码对输入信号的剩余部分中的至少一部分进行编码以产生第二编码信号。第三步骤包括组合第一编码信号和第二编码信号以产生输出数据流。

9. 发明申请

WO2006051451A1 AUDIO CODING AND DECODING 审中-公开
标题翻译：音频编码和解码
公开(公告)号：WO2006051451A1
公开(公告)日：2006-05-18
申请号：PCT/IB2005/053591
申请日：2005-11-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , FRANCE TELECOM S.A. , DEN BRINKER, Albertus, C. , RIERA PALOU, Felipe , OOMEN, Arnoldus, W., J. , RAULT, Jean-Bernard, H., M. , VIRETTE, David, S. T. , PHILIPPE, Pierrick, J.-L. M.
发明人： DEN BRINKER, Albertus, C. , RIERA PALOU, Felipe , OOMEN, Arnoldus, W., J. , RAULT, Jean-Bernard, H., M. , VIRETTE, David, S. T. , PHILIPPE, Pierrick, J.-L. M.
IPC分类号： G10L19/08
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。

10. 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。

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