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1. 发明申请

US20060171542A1 Coding of main and side signal representing a multichannel signal 审中-公开
标题翻译：表示多声道信号的主信号和侧信号的编码
公开(公告)号：US20060171542A1
公开(公告)日：2006-08-03
申请号：US10549635
申请日：2004-03-18
申请人： Albertus Den Brinker , Andreas Gerrits , Robert Sluijter
发明人： Albertus Den Brinker , Andreas Gerrits , Robert Sluijter
IPC分类号： H04R5/00 , H04R29/00
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。

2. 发明申请

US20060036431A1 Audio coding 有权
标题翻译：音频编码
公开(公告)号：US20060036431A1
公开(公告)日：2006-02-16
申请号：US10536228
申请日：2003-11-06
申请人： Albertus Den Brinker , Andreas Gerrits , Robert Sluijter
发明人： Albertus Den Brinker , Andreas Gerrits , Robert Sluijter
IPC分类号： G10L11/04
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码（r）的编码音频流（46）。

3. 发明申请

US20050259822A1 Sinusoidal audio coding 审中-公开
标题翻译：正弦音频编码
公开(公告)号：US20050259822A1
公开(公告)日：2005-11-24
申请号：US10520196
申请日：2003-06-18
申请人： Robert Sluijter , Andreas Gerrits , Gerard Hotho , Albertus Den Brinker
发明人： Robert Sluijter , Andreas Gerrits , Gerard Hotho , Albertus Den Brinker
IPC分类号： G10L19/093 , H04N7/167
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连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

US20070112573A1 Sinusoid selection in audio encoding 审中-公开
标题翻译：音素编码中的正弦选择
公开(公告)号：US20070112573A1
公开(公告)日：2007-05-17
申请号：US10539318
申请日：2003-11-20
申请人： Andreas Gerrits , Albertus Den Brinker
发明人： Andreas Gerrits , Albertus Den Brinker
IPC分类号： G10L21/00 , G10L11/00
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 hit-rate for a given audio quality.
摘要翻译：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。该方法包括以下步骤：对所述音频信号的第一段执行分析，基于所述分析选择候选正弦曲线，为所述候选正弦波中的至少一个定义所述候选正弦波频率周围的本地频带，组合频率分量的幅度在所述本地频带内，排除所述本地频带内的候选正弦波中的至少一个，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的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命中率方面是有利的。

5. 发明申请

US20070100639A1 Audio encoding 失效
标题翻译：音频编码
公开(公告)号：US20070100639A1
公开(公告)日：2007-05-03
申请号：US10575428
申请日：2004-10-04
申请人： Albertus Den Brinker , Andreas Gerrits
发明人： Albertus Den Brinker , Andreas Gerrits
IPC分类号： G10L21/00
CPC分类号： G10L19/032 , G10L19/093
摘要： Coding of an audio signal (x) represented by a respective set of sampled signal values (x(t)) for each of a plurality of sequential time segments is disclosed. The sampled signal values are analyzed to determine one or more sinusoidal components for each of the plurality of sequential segments. The sinusoidal components are linked across a plurality of sequential segments to provide sinusoidal tracks, where each track comprises a number of frames. An encoded signal (AS) is generated, including sinusoidal codes (Cs) comprising a representation level (r) for each frame or including sinusoidal codes (Cs) where some of these codes comprise a phase (φ), a frequency (ω) and a quantization table (Q) for a given frame when the given frame is designated as a random-access frame. The invention allows random access in a track while avoiding long adaptation of the quantization accuracy in a quantizer and/or the need for a large bit stream while still maintaining improved audio quality.
摘要翻译：公开了对于多个连续时间段中的每一个对由相应的一组采样信号值（x（t））表示的音频信号（x）的编码。分析采样的信号值以确定多个顺序段中的每一个的一个或多个正弦分量。正弦分量连接在多个顺序段上以提供正弦曲线，其中每个轨道包括多个帧。生成编码信号（AS），包括包括每帧的表示级（r）或包括正弦代码（C SUB）的正弦码（C SUB），其中一些的这些代码包括当给定帧被指定为随机接入帧时给定帧的相位（phi），频率（ω）和量化表（Q）。本发明允许在轨道中随机访问，同时避免量化器中的量化精度的长时间适应性和/或对大比特流的需要，同时仍然保持改善的音频质量。

6. 发明申请

US20060212501A1 Sinusoid selection in audio encoding 审中-公开
标题翻译：音素编码中的正弦选择
公开(公告)号：US20060212501A1
公开(公告)日：2006-09-21
申请号：US10539311
申请日：2003-11-19
申请人： Andreas Gerrits , Albertus Den Brinker
发明人： Andreas Gerrits , Albertus Den Brinker
IPC分类号： G06F17/10
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。

7. 发明申请

US20070112560A1 Low bit-rate audio encoding 有权
标题翻译：低比特率音频编码
公开(公告)号：US20070112560A1
公开(公告)日：2007-05-17
申请号：US10564656
申请日：2004-07-08
申请人： Andreas Gerrits , Albertus Den Brinker
发明人： Andreas Gerrits , Albertus Den Brinker
IPC分类号： G10L19/14
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

8. 发明申请

US20070185707A1 Audio coding 失效
标题翻译：音频编码
公开(公告)号：US20070185707A1
公开(公告)日：2007-08-09
申请号：US10598796
申请日：2005-03-08
申请人： Andreas Gerrits , Albertus Den Brinker
发明人： Andreas Gerrits , Albertus Den Brinker
IPC分类号： G10L19/00
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 transient 5 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，W 2，W 3）加权，并且连续段具有其后沿和前沿的正常重叠周期（0）。确定瞬时5分量的分段用具有修改的后沿的第一修改窗口（WIm）加权，并且利用具有修改的前沿的第二修改窗口（W 2 m）对轨道中的后续段进行加权，使得修改的后沿和修改的前沿具有包括瞬态分量并且比正常的重叠周期（0）短的修改的重叠周期（0m），并且其中音频流包括代表频率和瞬态。根据本发明，修改的重叠周期（0m）取决于频率值（f）。

9. 发明申请

US20070106505A1 Audio coding 审中-公开
标题翻译：音频编码
公开(公告)号：US20070106505A1
公开(公告)日：2007-05-10
申请号：US10580676
申请日：2004-11-24
申请人： Andreas Gerrits , Albertus Den Brinker , Felip Riera Palou
发明人： Andreas Gerrits , Albertus Den Brinker , Felip Riera Palou
IPC分类号： G10L19/00
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 (r1). A modeller (SEG) models the frequency spectrum of the first residual signal (r1) 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 (r2). Another modeller (RPE) models a component (r2,r3) of the second residual signal with a pulse train coder (RPE) to provide respective pulse train parameters (L0). 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 (L0).
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（r 1> 1）。模型（SEG）通过确定滤波器的第一滤波器参数（Ps）来确定第一残差信号（r 1> 1）的频谱，该滤波器的频率响应近似于第一残差信号的频谱。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（r 2> 2）。另一个建模器（RPE）用脉冲串编码器（RPE）对第二残差信号的分量（r 2 2，r 3 3）建模，以提供相应的脉冲序列参数（L 0 ）。比特流生成器（15）生成包括正弦码（Cs），第一滤波器参数（Ps）和脉冲序列参数（L 0> 0）的编码音频流（AS）。

10. 发明申请

US20070033014A1 Encoding of transient audio signal components 审中-公开
标题翻译：瞬态音频信号分量的编码
公开(公告)号：US20070033014A1
公开(公告)日：2007-02-08
申请号：US10570438
申请日：2004-08-26
申请人： Andreas Gerrits , Albertus Den Brinker
发明人： Andreas Gerrits , Albertus Den Brinker
IPC分类号： G10L19/00
CPC分类号： G10L19/093
摘要： A method of encoding (1) an audio signal (x(t) is disclosed. The position of a transient signal component of the audio signal is estimated (110). A first portion (ti) of the transient signal component is modeled (111) with a first plurality of sinusoidal components. A difference (d) between the first portion (ti) of the transient signal component and the transient signal component is estimated. The difference is modeled with a measure (E) of the energy of the difference; and the measure (E) is included in an audio stream (AS).
摘要翻译：公开了一种编码（1）音频信号（x（t））的方法，估计音频信号的瞬态信号分量的位置（110），对瞬态信号分量的第一部分（ti）进行建模（111 ）与第一多个正弦分量相乘，估计瞬态信号分量的第一部分（ti）与瞬态信号分量之间的差（d），该差异用差的能量的测量（E） ;并且测量（E）被包括在音频流（AS）中。

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