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    • 3. 发明申请
    • AUDIO BITSTREAM DATA STRUCTURE ARRANGEMENT OF A LOSSY ENCODED SIGNAL TOGETHER WITH LOSSLESS ENCODED EXTENSION DATA FOR SAID SIGNAL
    • 音频比特数据结构编码信号丢失编码信号与无噪声编码扩展数据的信号
    • US20090240506A1
    • 2009-09-24
    • US12309370
    • 2007-07-05
    • Oliver WuebboltFlorian KeilerPeter JaxSven KordonJohannes Boehm
    • Oliver WuebboltFlorian KeilerPeter JaxSven KordonJohannes Boehm
    • G10L21/00
    • G10L19/167
    • Lossless compression algorithms can only exploit redundancies of the original audio signal to reduce the data rate, but not irrelevancies as identified by psycho-acoustics. Lossless audio coding schemes apply a filter or transform for decorrelation and then encode the transformed signal. The encoded bit stream comprises the parameters of the transform or filter, and the lossless representation of the transformed signal. However, in case of lossy based lossless coding the additional amount of information exceeds the amount of data for the base layer by a multiple of the base layer data amount. Therefore the additional data cannot be packed completely into the base layer data stream e.g. as ancillary data. The at least two data streams resulting from the combination of lossy coding format with a lossless coding extension are the base layer containing the lossy coding information and the enhancement data stream for rebuilding the mathematically lossless original input signal. Furthermore several intermediate quality layers are possible. However, these data streams are not independent from each other Every higher layer depends on the lower layers and can only be reasonably decoded in combination with these lower layers. According to the invention, a special combination of one-time header information with repeated header information in a block structure is used, which kind of combination depends on the type of application. Assignment information data identify the different parts or layers of the lossless format belonging to one input signal. Synchronisation data are used to combine the different data streams or parts or layers to a single lossless or intermediate output signal. These features are used in a file format and in a streaming format.
    • 无损压缩算法只能利用原始音频信号的冗余度来降低数据速率,而不是由心理声学识别的无关紧要。 无损音频编码方案应用滤波器或变换进行去相关,然后对经变换的信号进行编码。 编码比特流包括变换或滤波器的参数以及变换信号的无损表示。 然而,在基于有损耗的无损编码的情况下,附加信息量超过基层的数据量乘以基本层数据量的倍数。 因此,附加数据不能完全包装到基本层数据流中。 作为辅助数据。 由有损编码格式与无损编码扩展的组合产生的至少两个数据流是包含用于重建数学无损原始输入信号的有损编码信息和增强数据流的基本层。 此外,几个中等质量的层是可能的。 然而,这些数据流彼此不是独立的每一个更高层依赖于较低的层,并且只能与这些较低的层组合地合理解码。 根据本发明,使用具有块结构中的重复标题信息的一次头信息的特殊组合,哪种组合取决于应用的类型。 分配信息数据标识属于一个输入信号的无损格式的不同部分或多个层。 同步数据用于将不同的数据流或部分或多个层组合成单个无损或中间的输出信号。 这些功能以文件格式和流格式使用。
    • 4. 发明授权
    • Audio data structure for lossy and lossless encoded extension data
    • 用于有损和无损编码扩展数据的音频数据结构
    • US08326639B2
    • 2012-12-04
    • US12309370
    • 2007-07-05
    • Oliver WuebboltFlorian KeilerPeter JaxSven KordonJohannes Boehm
    • Oliver WuebboltFlorian KeilerPeter JaxSven KordonJohannes Boehm
    • G10L19/02H04B1/66
    • G10L19/167
    • Lossless audio coding performs decorrelation and encodes the transformed signal. The encoded bit stream comprises de-correlation parameters and the lossless representation data of the transformed signal. However, in the case of lossy based lossless coding, the additional amount of information exceeds the base layer amount of data. Therefore the additional data cannot be packed completely into the base layer e.g. as ancillary data. The data streams resulting from the combination of lossy coding format with a lossless coding extension are the base layer containing the lossy coding information and the enhancement data stream for rebuilding the mathematically lossless original input signal. Every higher layer depends on the lower layers and can only be reasonably decoded in combination with these lower layers. According to the invention, a special combination of one-time header information with repeated header information in a block structure is used. Assignment information data identify the different layers.
    • 无损音频编码执行解相关并对变换的信号进行编码。 编码比特流包括去相关参数和变换信号的无损表示数据。 然而,在基于有损耗的无损编码的情况下,附加信息量超过基层数据量。 因此,附加数据不能完全包装到基本层中。 作为辅助数据。 由有损编码格式与无损编码扩展的组合产生的数据流是包含用于重建数学无损原始输入信号的有损编码信息和增强数据流的基本层。 每个更高的层取决于较低的层,并且只能与这些较低层组合地合理解码。 根据本发明,使用具有块结构中的重复标题信息的一次头信息的特殊组合。 分配信息数据标识不同的层。
    • 5. 发明申请
    • Method and Apparatus for Lossless Encoding of a Source Signal, Using a Lossy Encoded Data Steam and a Lossless Extension Data Stream
    • 用于信源的无损编码的方法和装置,使用有损编码数据蒸汽和无损扩展数据流
    • US20090177478A1
    • 2009-07-09
    • US12227045
    • 2007-04-18
    • Peter JaxFlorian KeilerOliver WuebboltSven KordonJohannes Boehm
    • Peter JaxFlorian KeilerOliver WuebboltSven KordonJohannes Boehm
    • G10L19/14G10L19/00
    • G10L19/0017G10L19/04G10L19/24
    • In lossy based lossless coding a PCM audio signal passes through a lossy encoder to a lossy decoder. The lossy encoder provides a lossy bit stream. The lossy decoder also provides side information that is used to control the coefficients of a prediction filter that de-correlates the difference signal between the PCM signal and the lossy decoder output. The de-correlated difference signal is lossless encoded, providing an extension bit stream. Instead of, or in addition to, de-correlating in the time domain, a de-correlation in the frequency domain using spectral whitening can be performed. The lossy encoded bit stream together with the lossless encoded extension bit stream form a lossless encoded bitstream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/decoding.
    • 在基于有损耗的无损编码中,PCM音频信号通过有损编码器到有损解码器。 有损编码器提供有损比特流。 有损解码器还提供用于控制将PCM信号和有损解码器输出之间的差信号去相关的预测滤波器的系数的侧信息。 去相关差分信号是无损编码的,提供扩展比特流。 代替或者除了在时域中去相关之外,可以执行使用频谱白化的频域中的去相关。 有损编码比特流与无损编码扩展比特流一起形成无损编码比特流。 本发明有助于通过能够在数字上准确再现原始波形的扩展来增强有损感知音频编码/解码,并提供用于在解码器位置重建中等质量音频信号的附加数据。 无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码以及优质的mp3编码/解码。
    • 7. 发明授权
    • Method and apparatus for lossless encoding of a source signal, using a lossy encoded data steam and a lossless extension data stream
    • 使用有损编码数据蒸汽和无损扩展数据流对信号源进行无损编码的方法和装置
    • US08326618B2
    • 2012-12-04
    • US12227045
    • 2007-04-18
    • Peter JaxFlorian KeilerOliver WuebboltSven KordonJohannes Boehm
    • Peter JaxFlorian KeilerOliver WuebboltSven KordonJohannes Boehm
    • G10L21/00
    • G10L19/0017G10L19/04G10L19/24
    • In lossy based lossless coding a PCM audio signal passes through a lossy encoder to a lossy decoder. The lossy encoder provides a lossy bit stream. The lossy decoder also provides side information that is used to control the coefficients of a prediction filter that de-correlates the difference signal between the PCM signal and the lossy decoder output. The de-correlated difference signal is lossless encoded, providing an extension bit stream. Instead of, or in addition to, de-correlating in the time domain, a de-correlation in the frequency domain using spectral whitening can be performed. The lossy encoded bit stream together with the lossless encoded extension bit stream form a lossless encoded bitstream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/decoding.
    • 在基于有损耗的无损编码中,PCM音频信号通过有损编码器到有损解码器。 有损编码器提供有损比特流。 有损解码器还提供用于控制将PCM信号和有损解码器输出之间的差信号去相关的预测滤波器的系数的侧信息。 去相关差分信号是无损编码的,提供扩展比特流。 代替或者除了在时域中去相关之外,可以执行使用频谱白化的频域中的去相关。 有损编码比特流与无损编码扩展比特流一起形成无损编码比特流。 本发明有助于通过能够在数字上准确再现原始波形的扩展来增强有损感知音频编码/解码,并提供用于在解码器位置重建中等质量音频信号的附加数据。 无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码以及优质的mp3编码/解码。
    • 10. 发明授权
    • Method and apparatus for re-encoding signals
    • 用于重新编码信号的方法和装置
    • US08428942B2
    • 2013-04-23
    • US12227189
    • 2007-05-12
    • Peter JaxOliver WuebboltJohannes Boehm
    • Peter JaxOliver WuebboltJohannes Boehm
    • G10L19/00G10L19/02
    • G10L19/24G10L19/0204G10L19/173
    • At the time of encoding audio content, the finally required data rate for delivery to the customer may be unknown. A data format is disclosed that is optimized for serving as Intermediate Format for efficient and fast recoding, to obtain one or more standard complying lossy encoded data streams with flexible data rates. Encoding can be performed in two steps that are inter-coordinated for cooperating, but may be locally and/or temporally separate. Between the partial encoders encoding parameters and/or auxiliary data are transmitted in a separate parameter enhancement layer, which complements a lossy data stream and can be used by the second encoder or transcoder for fast and computationally efficient implementation of the second encoding step. An additional lossless enhancement layer allows lossless reconstruction.
    • 在对音频内容进行编码时,传送给客户的最终所需的数据速率可能是未知的。 公开了针对用于高效和快速重新编码的中间格式进行优化的数据格式,以获得具有灵活数据速率的一个或多个标准符合有损编码数据流。 编码可以在两个步骤中执行,这两个步骤是协调的,用于协作,但可以在本地和/或时间上分离。 编码参数和/或辅助数据的部分编码器之间的传输是在单独的参数增强层中传输的,其补充有损数据流,并可被第二编码器或代码转换器用于快速和计算上有效地实现第二编码步骤。 额外的无损增强层允许无损重建。