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    Method and apparatus to encode and/or decode signal using bandwidth extension technology
    51.
    发明授权
    Method and apparatus to encode and/or decode signal using bandwidth extension technology 有权
    使用带宽扩展技术对信号进行编码和/或解码的方法和装置

    公开(公告)号：US07864843B2

    公开(公告)日：2011-01-04

    申请号：US11757528

    申请日：2007-06-04

    申请人： Ki-hyun Choo ,  Jung-hoe Kim ,  Eun-mi Oh ,  Miao Lei ,  Chang-yong Son

    发明人： Ki-hyun Choo ,  Jung-hoe Kim ,  Eun-mi Oh ,  Miao Lei ,  Chang-yong Son

    IPC分类号： H04N11/02 ,  G10L13/00

    CPC分类号： G10L19/0208 ,  G10L21/038

    摘要： A method and apparatus to perform bandwidth extension encoding and decoding encodes and/or decodes a high frequency signal using an excitation signal for a low frequency signal encoded in a time domain or a frequency domain or using an excitation spectrum for the low frequency signal. Accordingly, although an audio signal is encoded or decoded using a small number of bits, the quality of sound corresponding to a signal in a high frequency band does not degrade. Therefore, a coding efficiency of the audio signal can be maximized.

    摘要翻译： 执行带宽扩展编码和解码的方法和装置使用用于在时域或频域中编码的低频信号的激励信号或者使用低频信号的激励频谱对高频信号进行编码和/或解码。 因此，尽管使用少量的比特对音频信号进行编码或解码，但是与高频带中的信号相对应的声音质量不会降低。 因此，可以使音频信号的编码效率最大化。

    Scalable encoding and/or decoding method and apparatus
    52.
    发明授权
    Scalable encoding and/or decoding method and apparatus 有权
    可扩展编码和/或解码方法和装置

    公开(公告)号：US07750829B2

    公开(公告)日：2010-07-06

    申请号：US12061028

    申请日：2008-04-02

    申请人： Jung-hoe Kim ,  Eun-mi Oh ,  Ki-hyun Choo ,  Boris Kudryashov ,  Olga Prokofyeva

    发明人： Jung-hoe Kim ,  Eun-mi Oh ,  Ki-hyun Choo ,  Boris Kudryashov ,  Olga Prokofyeva

    IPC分类号： H03M7/40

    CPC分类号： G10L19/24 ,  G10L19/0017 ,  H04N19/13 ,  H04N19/1887 ,  H04N19/37

    摘要： A method and apparatus to scalably encode or decode an audio signal or a video signal. A signal distribution is considered after binarization is performed based on a tree structure. Thus, a decoding end can minimize generation of quantization errors and restore an original signal. In addition, only frequency components perceptually important in terms of human hearing are set to an upper layer and encoded without decreasing a bandwidth which is restored from an upper layer. Therefore, sound quality can be increased by decreasing quantization noise while maintaining a relatively large frequency bandwidth, and the degradation of a compression performance is prevented.

    摘要翻译： 一种用于可缩放地编码或解码音频信号或视频信号的方法和装置。 在基于树结构执行二值化之后考虑信号分布。 因此，解码端可以最小化量化误差的产生并恢复原始信号。 此外，只有在人听觉上感知重要的频率分量被设置为上层，并且在不减少从上层恢复的带宽的情况下进行编码。 因此，通过降低量化噪声同时维持相对较大的频率带宽可以提高声音质量，并且防止压缩性能的劣化。

    SCALABLE ENCODING AND/OR DECODING METHOD AND APPARATUS
    54.
    发明申请
    SCALABLE ENCODING AND/OR DECODING METHOD AND APPARATUS 有权
    可编程和/或解码方法和装置

    公开(公告)号：US20090073008A1

    公开(公告)日：2009-03-19

    申请号：US12061028

    申请日：2008-04-02

    申请人： Jung-hoe KIM ,  Eun-mi Oh ,  Ki-hyun Choo ,  Boris Kudryashov ,  Olga Prokofyeva

    发明人： Jung-hoe KIM ,  Eun-mi Oh ,  Ki-hyun Choo ,  Boris Kudryashov ,  Olga Prokofyeva

    IPC分类号： H03M7/40

    CPC分类号： G10L19/24 ,  G10L19/0017 ,  H04N19/13 ,  H04N19/1887 ,  H04N19/37

    摘要： A method and apparatus to scalably encode or decode an audio signal or a video signal. A signal distribution is considered after binarization is performed based on a tree structure. Thus, a decoding end can minimize generation of quantization errors and restore an original signal. In addition, only frequency components perceptually important in terms of human hearing are set to an upper layer and encoded without decreasing a bandwidth which is restored from an upper layer. Therefore, sound quality can be increased by decreasing quantization noise while maintaining a relatively large frequency bandwidth, and the degradation of a compression performance is prevented.

    摘要翻译： 一种用于可缩放地编码或解码音频信号或视频信号的方法和装置。 在基于树结构执行二值化之后考虑信号分布。 因此，解码端可以最小化量化误差的产生并恢复原始信号。 此外，只有在人听觉上感知重要的频率分量被设置为上层，并且在不减少从上层恢复的带宽的情况下进行编码。 因此，通过降低量化噪声同时维持相对较大的频率带宽可以提高声音质量，并且防止压缩性能的劣化。

    METHOD, MEDIUM, AND APPARATUS TO CLASSIFY FOR AUDIO SIGNAL, AND METHOD, MEDIUM AND APPARATUS TO ENCODE AND/OR DECODE FOR AUDIO SIGNAL USING THE SAME
    56.
    发明申请
    METHOD, MEDIUM, AND APPARATUS TO CLASSIFY FOR AUDIO SIGNAL, AND METHOD, MEDIUM AND APPARATUS TO ENCODE AND/OR DECODE FOR AUDIO SIGNAL USING THE SAME 审中-公开
    用于分类音频信号的方法，媒体和装置，以及使用其进行音频信号的编码和/或解码的方法，媒体和装置

    公开(公告)号：US20080162121A1

    公开(公告)日：2008-07-03

    申请号：US11964963

    申请日：2007-12-27

    申请人： Chang-yong Son ,  Eun-mi Oh ,  Ki-hyun Choo ,  Jung-hoe Kim

    发明人： Chang-yong Son ,  Eun-mi Oh ,  Ki-hyun Choo ,  Jung-hoe Kim

    IPC分类号： G10L19/00

    CPC分类号： G10L19/22

    摘要： Provided are a classifying method and apparatus for an audio signal, and an encoding/decoding method and apparatus for an audio signal using the classifying method and apparatus. In the classification method, an audio signal is classified by adaptively adjusting a classification threshold for a frame of the audio signal that is to be classified according to a long-term feature of the audio signal, thereby improving a hit rate of signal classification, suppressing frequent mode switching per frame, improving noise tolerance, and providing smooth reconstruction of the audio signal.

    摘要翻译： 提供了一种用于音频信号的分类方法和装置，以及使用分类方法和装置的用于音频信号的编码/解码方法和装置。 在分类方法中，通过根据音频信号的长期特征自适应地调整要分类的音频信号的帧的分类阈值来分类音频信号，从而提高信号分类的命中率，抑制 每帧频繁模式切换，提高噪声容限，并提供音频信号的平滑重建。

    ADAPTIVE ENCODING AND DECODING METHODS AND APPARATUSES
    58.
    发明申请
    ADAPTIVE ENCODING AND DECODING METHODS AND APPARATUSES 有权
    自适应编码和解码方法和装置

    公开(公告)号：US20080010062A1

    公开(公告)日：2008-01-10

    申请号：US11774664

    申请日：2007-07-09

    申请人： Chang-yong Son ,  Eun-mi Oh ,  Ki-hyun Choo ,  Jung-hoe Kim

    发明人： Chang-yong Son ,  Eun-mi Oh ,  Ki-hyun Choo ,  Jung-hoe Kim

    IPC分类号： G10L19/00

    CPC分类号： G10L19/18 ,  G10L19/0212 ,  G10L19/06 ,  G10L19/09 ,  G10L19/20 ,  G10L25/18

    摘要： An adaptive encoding method includes splitting an input signal into a low-frequency band signal and a high-frequency band signal; performing forward adaptive linear prediction on the low-frequency band signal and thus filtering the low-frequency band signal; selectively performing backward adaptive linear prediction or long-term prediction on the filtered low-frequency band signal according to the analysis result of the low-frequency band signal; transforming the low-frequency band signal, on which backward adaptive linear prediction or long-term prediction has been performed, into a signal in a frequency domain and quantizing the signal; and encoding the high-frequency band signal using the low-frequency band signal, on which backward adaptive linear prediction or long-term prediction has been performed, or the quantized signal. Therefore, compression efficiency of both speech and music signals can be enhanced, and a robust compression method can be provided for various audio contents at a low bit rate.

    摘要翻译： 一种自适应编码方法，包括将输入信号分成低频带信号和高频带信号; 对低频带信号执行前向自适应线性预测，从而对低频带信号进行滤波; 根据低频带信号的分析结果，对经滤波的低频带信号选择性地执行反向自适应线性预测或长期预测; 将已经进行了反向自适应线性预测或长期预测的低频带信号变换为频域中的信号并量化信号; 并且使用已经执行了反向自适应线性预测或长期预测的低频带信号或量化信号对高频带信号进行编码。 因此，可以提高语音和音乐信号的压缩效率，并且可以以低比特率为各种音频内容提供鲁棒的压缩方法。

    WIDEBAND SIGNAL ENCODING, DECODING AND TRANSMISSION
    59.
    发明申请
    WIDEBAND SIGNAL ENCODING, DECODING AND TRANSMISSION 失效
    宽带信号编码，解码和传输

    公开(公告)号：US20070296614A1

    公开(公告)日：2007-12-27

    申请号：US11766322

    申请日：2007-06-21

    申请人： Kang-eun Lee ,  Eun-mi Oh ,  Ho-sang Sung ,  Chang-yong Son ,  Ki-hyun Choo ,  Jung-hoe Kim

    发明人： Kang-eun Lee ,  Eun-mi Oh ,  Ho-sang Sung ,  Chang-yong Son ,  Ki-hyun Choo ,  Jung-hoe Kim

    IPC分类号： H03M7/00

    CPC分类号： G10L19/0208 ,  G10L21/038

    摘要： Encoding and/or decoding a wideband signal produces high frequency band spectra from low frequency band spectral information. Linear prediction filter coefficients are determined for the entire wideband spectrum of an input signal. An energy value in each of a plurality of sub-bands in the high frequency band is determined and encoded. The short-term correlation removed input signal is then down-sampled to form a low frequency band signal. At a decoder, the high frequency band signal is generated using the encoded low frequency band signal. The energy in each sub-band of the high frequency band is adjusted using the encoded energy value. Thus, the spectral envelope for the entire wideband signal is synthesized and decoded using linear predictive synthesis.

    摘要翻译： 编码和/或解码宽带信号从低频带频谱信息产生高频带频谱。 对于输入信号的整个宽带谱确定线性预测滤波器系数。 确定并编码高频带中的多个子带中的每一个中的能量值。 然后将短期相关去除输入信号进行下采样以形成低频带信号。 在解码器处，使用编码的低频带信号产生高频带信号。 使用编码的能量值来调整高频带的每个子带中的能量。 因此，使用线性预测合成来合成和解码整个宽带信号的频谱包络。

    Method, medium, and system encoding and/or decoding audio data
    60.
    发明申请
    Method, medium, and system encoding and/or decoding audio data 审中-公开
    方法，媒体和系统编码和/或解码音频数据

    公开(公告)号：US20070160043A1

    公开(公告)日：2007-07-12

    申请号：US11651537

    申请日：2007-01-10

    申请人： Jung-hoe Kim ,  Eun-mi Oh ,  Ki-hyun Choo

    发明人： Jung-hoe Kim ,  Eun-mi Oh ,  Ki-hyun Choo

    IPC分类号： H04L12/56

    CPC分类号： G10L19/167 ,  G10L19/008 ,  G10L19/24

    摘要： An audio data encoding method, medium, and system encoding a header that includes signaling information of audio data and selectively includes signaling information of an extension payload, and encoding the audio data and two or more extension payloads, so that backward compatibility is supported, and a decoder that may recognize the signalling information of such an extension payload.

    摘要翻译： 音频数据编码方法，媒体和系统编码包括音频数据的信令信息的报头，并且选择性地包括扩展有效载荷的信令信息，以及对音频数据和两个或更多个扩展有效载荷进行编码，从而支持向后兼容性，以及 解码器，其可以识别这种扩展有效载荷的信令信息。