公开(公告)号：US20110311063A1

公开(公告)日：2011-12-22

申请号：US13256229

申请日：2010-03-05

申请人： Fransiscus Marinus Jozephus De Bont ,  Amoldus Werner Johannes Oomen ,  Erik Gosuinus Petrus Schuijers

发明人： Fransiscus Marinus Jozephus De Bont ,  Amoldus Werner Johannes Oomen ,  Erik Gosuinus Petrus Schuijers

IPC分类号： G10L19/00 ,  H04R5/00

CPC分类号： G11B20/00086 ,  G11B20/00884

摘要： The invention proposes a method for embedding an ancillary data into a compressed audio signal. This is achieved by replacing Least Significant Bits (LSBs) in at least one frequency subband of the compressed audio signal by the ancillary data. When replacing LSB bits of compressed subband signals with the ancillary data, the subband signal is effectively modified, resulting in a different decoded output. The replaced LSB bits corresponding to the ancillary data are conveyed as part of the bitstream and can be easily extracted at the decoder. In such a way the decoder obtains the ancillary data that can be used for more advanced audio reproduction at the decoder. The compressed audio itself maintains a good audio quality despite the replacement of the LSB bits of the frequency subband, because the LSB bits do not contribute to the audible artefacts.

摘要翻译： 本发明提出了一种将辅助数据嵌入到压缩音频信号中的方法。 这通过在辅助数据的压缩音频信号的至少一个频率子带中替换最低有效位（LSB）来实现。 当用辅助数据替换压缩子带信号的LSB位时，子带信号被有效地修改，导致不同的解码输出。 对应于辅助数据的替换的LSB位作为比特流的一部分被传送，并且可以在解码器处容易地提取。 以这种方式，解码器获得可用于解码器的更高级音频再现的辅助数据。 压缩音频本身保持良好的音频质量，尽管替换频率子带的LSB位，因为LSB位不会对可听见的伪像造成影响。

公开(公告)号：US20110178810A1

公开(公告)日：2011-07-21

申请号：US13076335

申请日：2011-03-30

申请人： Lars Falck VILLEMOES ,  Per EKSTRAND ,  Heiko PURNHAGEN ,  Erik Gosuinus Petrus SCHUIJERS ,  Fransiscus Marinus Jozephus de Bont

发明人： Lars Falck VILLEMOES ,  Per EKSTRAND ,  Heiko PURNHAGEN ,  Erik Gosuinus Petrus SCHUIJERS ,  Fransiscus Marinus Jozephus de Bont

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L21/038

摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.

摘要翻译： 提供对音频信号进行编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号 对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样，以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步的子带滤波至少一个 在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未进一步子带滤波的那些下采样子带信号中导出空间参数，以及导出包括导出 从第一多个下采样子带信号导出的子带信号和 第二多个下采样子带信号。 此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个 在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

公开(公告)号：US07110556B2

公开(公告)日：2006-09-19

申请号：US09741918

申请日：2000-12-20

申请人： Ronaldus Maria Aarts ,  Fransiscus Marinus Jozephus De Bont ,  Paulus Henricus Antonius Dillen ,  Augustus Josephus Elizabeth Maria Janssen

发明人： Ronaldus Maria Aarts ,  Fransiscus Marinus Jozephus De Bont ,  Paulus Henricus Antonius Dillen ,  Augustus Josephus Elizabeth Maria Janssen

IPC分类号： H03G5/00 ,  G10L21/00

CPC分类号： H04S1/002 ,  H04S1/007

摘要： An audio signal processing device includes a signal supply for supplying coded audio signal over more than one input channel and, per input channel, over separate frequency sub-bands domain sub-channels. Further filters are used to decode and synthesize the audio signals over the total frequency domain. Sub-band combination circuits are used for supplying respective input channels to the same sub-band combination circuit the signals from the same sub-band frequency domain audio signals.

摘要翻译： 音频信号处理装置包括用于通过多于一个输入信道提供编码音频信号的信号电源，以及每个输入信道通过分开的频率子带域子信道。 其他滤波器用于在总频域上解码和合成音频信号。 子带组合电路用于向相同的子带组合电路提供来自相同子带频域音频信号的信号的各个输入信道。

公开(公告)号：US08260607B2

公开(公告)日：2012-09-04

申请号：US13076335

申请日：2011-03-30

申请人： Lars Falck Villemoes ,  Per Ekstrand ,  Heiko Purnhagen ,  Erik Gosuinus Petrus Schuijers ,  Fransiscus Marinus Jozephus De Bont

发明人： Lars Falck Villemoes ,  Per Ekstrand ,  Heiko Purnhagen ,  Erik Gosuinus Petrus Schuijers ,  Fransiscus Marinus Jozephus De Bont

IPC分类号： G10L21/00 ,  G10L19/14 ,  G10L19/12 ,  G10L19/00

CPC分类号： G10L19/008 ,  G10L21/038

摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.

摘要翻译： 提供对音频信号进行编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号 对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样，以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步的子带滤波至少一个 在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未被进一步子带滤波的那些下采样子带信号导出空间参数，以及导出包括导出的 从第一多个下采样子带信号导出的子带信号和 第二多个下采样子带信号。 此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个 在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

公开(公告)号：US20120039477A1

公开(公告)日：2012-02-16

申请号：US13265423

申请日：2010-04-14

申请人： Erik Gosuinus Petrus Schijers ,  Arnoldus Werner Johannes Oomen ,  Fransiscus Marinus Jozephus De Bont ,  Mykola Ostrovskyy ,  Adriaan Johannes Rijnberg ,  Jeroen Gerardus Henricus Koppens

发明人： Erik Gosuinus Petrus Schijers ,  Arnoldus Werner Johannes Oomen ,  Fransiscus Marinus Jozephus De Bont ,  Mykola Ostrovskyy ,  Adriaan Johannes Rijnberg ,  Jeroen Gerardus Henricus Koppens

IPC分类号： H04R5/00

CPC分类号： G10L19/008 ,  H04R5/033 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/03

摘要： An audio synthesizing apparatus receives an encoded signal comprising a downmix signal and parametric extension data for expanding the downmix signal to a multi-sound source signal. A decomposition processor (205) performs a signal decomposition of the downmix signal to generate at least a first signal component and a second signal component, where the second signal component is at least partially decorrelated with the first signal component. A position processor (207) determines a first spatial position indication for the first signal component in response to the parametric extension data and a binaural processor (211) synthesizes the first signal component based on the first spatial position indication and the second signal component to originate from a different direction. The invention may provide improved spatial experience from e.g. headphones by using a direct synthesis of a main directional signal from the appropriate position rather than as a combination of signals from virtual loudspeaker positions.

摘要翻译： 音频合成装置接收包括下混合信号的编码信号和用于将下混合信号扩展为多声源信号的参数扩展数据。 分解处理器（205）执行降混信号的信号分解以产生至少第一信号分量和第二信号分量，其中第二信号分量与第一信号分量至少部分去相关。 位置处理器（207）响应于参数扩展数据确定第一信号分量的第一空间位置指示，并且双耳处理器（211）基于第一空间位置指示和第二信号分量来合成第一信号分量以产生 从不同的方向。 本发明可以提供来自例如， 通过使用来自适当位置的主要定向信号的直接合成而不是来自虚拟扬声器位置的信号的组合来使用耳机。

公开(公告)号：US07519538B2

公开(公告)日：2009-04-14

申请号：US10577106

申请日：2004-10-28

申请人： Lars Falck Villemoes ,  Per Ekstrand ,  Heiko Purnhagen ,  Erik Gosuinus Petrus Schuijers ,  Fransiscus Marinus Jozephus de Bont

发明人： Lars Falck Villemoes ,  Per Ekstrand ,  Heiko Purnhagen ,  Erik Gosuinus Petrus Schuijers ,  Fransiscus Marinus Jozephus de Bont

IPC分类号： G10L19/00 ,  G10L19/14

CPC分类号： G10L19/008 ,  G10L21/038

摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.

摘要翻译： 提供对音频信号进行编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号 对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步子带滤波至少一个 在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未进一步子带滤波的那些下采样子带信号导出空间参数，以及导出包括导出的 从第一多个下采样子带信号导出的子带信号和 第二多个下采样子带信号。 此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个 在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

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

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。