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31. 发明申请

US20080172223A1 Method, apparatus, and medium for bandwidth extension encoding and decoding 有权
标题翻译：用于带宽扩展编码和解码的方法，装置和介质
公开(公告)号：US20080172223A1
公开(公告)日：2008-07-17
申请号：US11976763
申请日：2007-10-26
申请人： Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
发明人： Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G10L19/02
CPC分类号： G10L21/038 , G10L19/0212 , G10L19/12 , G10L19/20
摘要： Provided are a method, apparatus, and medium for encoding/decoding a high frequency band signal by using a low frequency band signal corresponding to an audio signal or a speech signal. Accordingly, since the high frequency band signal is encoded and decoded by using the low frequency band signal, encoding and decoding can be carried out with a small data size while avoiding deterioration of sound quality.
摘要翻译：提供了一种通过使用与音频信号或语音信号对应的低频带信号来对高频带信号进行编码/解码的方法，装置和媒体。因此，由于通过使用低频带信号对高频带信号进行编码和解码，所以可以以小的数据大小进行编码和解码，同时避免音质的恶化。

32. 发明申请

US20080077412A1 Method, medium, and system encoding and/or decoding audio signals by using bandwidth extension and stereo coding 审中-公开
标题翻译：通过使用带宽扩展和立体声编码，方法，媒体和系统编码和/或解码音频信号
公开(公告)号：US20080077412A1
公开(公告)日：2008-03-27
申请号：US11902650
申请日：2007-09-24
申请人： Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
发明人： Eun-mi Oh , Ki-hyun Choo , Jung-hoe Kim
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/008
摘要： A method, medium, and system encoding and/or decoding an audio signal by extracting stereo parameters from an input signal, encoding the stereo parameters, and performing down-mixing on the input signal to a down-mixed signal, splitting the down-mixed signal into a low band signal and a high band signal, determining whether to encode the low band signal in a time domain or a frequency domain, if the low band signal is determined to be encoded in the time domain, encoding the low band signal in the time domain, if the low band signal is determined to be encoded in the frequency domain, generating an encoded bitplane by converting the low band signal from the time domain to the frequency domain by using a first conversion method and performing quantization and context-dependent encoding on the low band signal converted to the frequency domain by using the first conversion method, converting each of the low band signal and the high band signal from the time domain to the frequency domain or a time/frequency domain by using a second conversion method, generating and encoding bandwidth extension information that represents a characteristic of the high band signal converted by the second conversion method by using the low band signal converted by the second conversion method, and outputting the encoded stereo parameters, the encoded bitplane, and the encoded bandwidth extension information a result of encoding the input signal. Accordingly, high frequency components and stereo components may be efficiently encoded and decoded at a potential restricted bit rate, thereby improving the quality of an audio signal.
摘要翻译：通过从输入信号中提取立体声参数，对立体声参数进行编码，并对输入信号进行降混以降低混合信号的方法，媒体和/或对音频信号进行编码和/或解码，将下混合信号转换成低频带信号和高频带信号，如果确定在时域中对低频带信号进行编码，则确定是否在时域或频域编码低频带信号，对低频带信号进行编码时域，如果低频带信号被确定为在频域中被编码，则通过使用第一转换方法将低频信号从时域转换到频域，并且执行量化和上下文相关性来产生编码的位平面通过使用第一转换方法对被转换到频域的低频带信号进行编码，将低频带信号和高频带信号从时域转换成频域或时间/频域，通过使用通过第二转换方法转换的低频带信号，生成和编码表示通过第二转换方法转换的高频带信号的特性的带宽扩展信息，并输出编码的立体声参数，编码的位平面和编码的带宽扩展信息是对输入信号进行编码的结果。因此，可以以潜在的限制比特率对高频分量和立体声分量进行有效地编码和解码，从而提高音频信号的质量。

33. 发明申请

US20070299656A1 METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND 有权
标题翻译：用于自适应编码和解码高频带的方法和装置
公开(公告)号：US20070299656A1
公开(公告)日：2007-12-27
申请号：US11766331
申请日：2007-06-21
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： G10L19/14 , G10L21/00
CPC分类号： G10L21/038
摘要： Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.
摘要翻译：提供了一种用于对音频信号进行编码和解码的方法和装置。根据本申请，通过使用低于预设频带的低频信号，在时域或频域中自适应地编码或解码高于预置频带的高频带的信号。因此，即使当通过使用少量位来对音频信号进行编码或解码时，高频信号的声音质量也不会恶化，从而可以使编码效率最大化。

34. 发明申请

US20120288099A1 METHOD, MEDIUM, AND SYSTEM ENCODING/DECODING MULTI-CHANNEL SIGNAL 有权
标题翻译：方法，介质和系统编码/解码多通道信号
公开(公告)号：US20120288099A1
公开(公告)日：2012-11-15
申请号：US13557848
申请日：2012-07-25
申请人： Jung-hoe KIM , Eun-mi Oh , Konstantly Osipov , Ki-hyun Choo
发明人： Jung-hoe KIM , Eun-mi Oh , Konstantly Osipov , Ki-hyun Choo
IPC分类号： H04R5/00
CPC分类号： H04H40/36 , G10L19/008 , H04H20/47 , H04H20/88
摘要： A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.
摘要翻译：提供了一种多通道信号解码方法。解码表示多声道信号的下混信号，并对表示多声道信号的声道之间的特征关系的参数进行解码。通过使用解码参数来估计附加参数，并且通过使用解码参数和估计参数对解码的下混合信号进行混合，以解码多声道信号。

35. 发明授权

US08254584B2 Method, medium, and system encoding/decoding multi-channel signal 有权
标题翻译：方法，中，系统编码/解码多通道信号
公开(公告)号：US08254584B2
公开(公告)日：2012-08-28
申请号：US12107117
申请日：2008-04-22
申请人： Jung-hoe Kim , Eun-mi Oh , Konstantly Osipov , Ki-hyun Choo
发明人： Jung-hoe Kim , Eun-mi Oh , Konstantly Osipov , Ki-hyun Choo
IPC分类号： H04H20/47
CPC分类号： H04H40/36 , G10L19/008 , H04H20/47 , H04H20/88
摘要： A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.
摘要翻译：提供了一种多通道信号解码方法。解码表示多声道信号的下混信号，并对表示多声道信号的声道之间的特征关系的参数进行解码。通过使用解码参数来估计附加参数，并且通过使用解码参数和估计参数对解码的下混合信号进行混合，以解码多声道信号。

36. 发明授权

US08134910B2 Method and apparatus for multiplexing and demultiplexing asynchronous bitstreams 失效
标题翻译：用于复用和解复用异步比特流的方法和装置
公开(公告)号：US08134910B2
公开(公告)日：2012-03-13
申请号：US11935631
申请日：2007-11-06
申请人： Kang-eun Lee , Ki-hyun Choo , Jung-hoe Kim , Eun-mi Oh
发明人： Kang-eun Lee , Ki-hyun Choo , Jung-hoe Kim , Eun-mi Oh
IPC分类号： H04J11/00
CPC分类号： H04N21/4341 , H04N21/233 , H04N21/236 , H04N21/2368 , H04N21/434 , H04N21/439
摘要： Provided is a method and apparatus for multiplexing bitstreams that are coded to have different frame lengths using asynchronous time alignment, in which, based on the length of each frame of a bitstream selected as a reference bitstream from among bitstreams coded to have different frame lengths by a plurality of coders, the remaining bitstreams except for the reference bitstream are divided and multiplexed.
摘要翻译：提供了一种用于复用使用异步时间对准被编码为具有不同帧长度的比特流的方法和装置，其中，基于从被编码为具有不同帧长度的比特流中选择作为参考比特流的比特流的每个帧的长度，多个编码器，除了参考比特流之外的剩余比特流被分割和多路复用。

37. 发明授权

US08032362B2 Audio signal encoding/decoding method and apparatus 失效
标题翻译：音频信号编码/解码方法和装置
公开(公告)号：US08032362B2
公开(公告)日：2011-10-04
申请号：US11867218
申请日：2007-10-04
申请人： Ki-hyun Choo , Eun-mi Oh , Jung-hoe Kim , Konstantin Osipov , Sergey Petrov
发明人： Ki-hyun Choo , Eun-mi Oh , Jung-hoe Kim , Konstantin Osipov , Sergey Petrov
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/24
摘要： Provided is an audio signal encoding method including transforming an input signal from a time domain to a time/frequency domain using a first transformation method, extracting a stereo parameter from a signal of the time/frequency domain, encoding the stereo parameter, and down-mixing the signal of the time/frequency domain, transforming each of sub-bands of the down-mixed signal to a frequency domain by using a second transformation method, and encoding the signal of the frequency domain in the frequency domain.
摘要翻译：提供了一种音频信号编码方法，包括使用第一变换方法将输入信号从时域变换为时域/频域，从时域/频域的信号中提取立体声参数，对立体声参数进行编码，混合时间/频域的信号，通过使用第二变换方法将下混合信号的每个子频带变换为频域，并对频域中的频域的信号进行编码。

38. 发明授权

US08010348B2 Adaptive encoding and decoding with forward linear prediction 有权
标题翻译：具有前向线性预测的自适应编码和解码
公开(公告)号：US08010348B2
公开(公告)日：2011-08-30
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： G10L19/02 , G10L19/04 , G10L19/08
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。

39. 发明授权

US07864843B2 Method and apparatus to encode and/or decode signal using bandwidth extension technology 有权
标题翻译：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。

40. 发明授权

US07750829B2 Scalable encoding and/or decoding method and apparatus 有权
标题翻译：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。

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