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31. 发明授权

US08718284B2 Method, medium, and system encoding/decoding multi-channel signal 有权
公开(公告)号：US08718284B2
公开(公告)日：2014-05-06
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： 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.

32. 发明授权

US08321229B2 Apparatus, medium and method to encode and decode high frequency signal 有权
标题翻译：装置，介质和方法对高频信号进行编码和解码
公开(公告)号：US08321229B2
公开(公告)日：2012-11-27
申请号：US12256704
申请日：2008-10-23
申请人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
发明人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
IPC分类号： G06F15/00 , G10L19/00 , G10L21/00
CPC分类号： G10L25/93 , G10L21/038
摘要： A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
摘要翻译：提供了一种对音频信号进行编码或解码的方法和装置。在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

33. 发明申请

US20090006081A1 METHOD, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL 审中-公开
标题翻译：用于编码和/或解码信号的方法，介质和装置
公开(公告)号：US20090006081A1
公开(公告)日：2009-01-01
申请号：US12033342
申请日：2008-02-19
申请人： Eun-mi OH , Ho-sang Sung , Ki-hyun Choo , Jung-hoe Kim , Mi-young Kim
发明人： Eun-mi OH , Ho-sang Sung , Ki-hyun Choo , Jung-hoe Kim , Mi-young Kim
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/008 , G10L19/0208 , G10L19/025 , G10L19/167 , G10L19/20 , G10L19/24
摘要： Provided are a method and apparatus for encoding or decoding an audio signal or a speech signal. In the encoding method, encoding is performed by performing domain transformation on a received signal in units of frequency bands by applying a psychoacoustic model, encoding the transformation result with respect to predetermined one or more frequency bands by using a high temporal resolution coding tool, and then quantizing the encoding result. In the decoding method, decoding is performed by inversely quantizing signals obtained by encoding in units of frequency bands, decoding one or more signals from among the inversely quantized signals, which are allocated to one or more frequency bands which have a predetermined domain resolution, determined by applying the psychoacoustic model, that is greater than a predetermined value, according to a predetermined method, and then inversely transforming either the inversely quantized or the one or more decoded signals.
摘要翻译：提供了一种用于对音频信号或语音信号进行编码或解码的方法和装置。在编码方法中，通过使用心理声学模型，通过使用高时间分辨率编码工具对相对于预定的一个或多个频带进行变换结果的编码，对以频带为单位的接收信号进行域变换来进行编码，以及然后量化编码结果。在解码方法中，通过对由频带单位进行编码而得到的信号进行逆量化，对从量化后的信号中分离的一个以上的信号进行解码，分解成具有规定的域分辨率的一个以上的频带，通过应用根据预定方法大于预定值的心理声学模型，然后逆向变换反量化或一个或多个解码信号。

34. 发明申请

US20120278089A1 ERROR CONCEALMENT METHOD AND APPARATUS FOR AUDIO SIGNAL AND DECODING METHOD AND APPARATUS FOR AUDIO SIGNAL USING THE SAME 有权
标题翻译：用于音频信号和解码方法的错误接收方法和装置以及使用该信号的音频信号的装置
公开(公告)号：US20120278089A1
公开(公告)日：2012-11-01
申请号：US13544203
申请日：2012-07-09
申请人： Eun-mi OH , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-heo Kim , Kang-eun Lee
发明人： Eun-mi OH , Ki-hyun Choo , Ho-sang Sung , Chang-yong Son , Jung-heo Kim , Kang-eun Lee
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/0212 , G10L19/022 , H03M13/00
摘要： An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.
摘要翻译：一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

35. 发明申请

US20140149124A1 APPARATUS, MEDIUM AND METHOD TO ENCODE AND DECODE HIGH FREQUENCY SIGNAL 审中-公开
标题翻译：装置，介质和编码和解码高频信号的方法
公开(公告)号：US20140149124A1
公开(公告)日：2014-05-29
申请号：US13684879
申请日：2012-11-26
申请人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
发明人： Ki-hyun Choo , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0204 , G10L19/028
摘要： A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
摘要翻译：提供了一种对音频信号进行编码或解码的方法和装置。在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

36. 发明授权

US08615021B2 Method and apparatus to multiplex and demultiplex 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：US08615021B2
公开(公告)日：2013-12-24
申请号：US13417419
申请日：2012-03-12
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： H04J3/16
CPC分类号： H04N21/4341 , H04N21/233 , H04N21/236 , H04N21/2368 , H04N21/434 , H04N21/439
摘要： Provided is a method and apparatus to multiplex 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：提供了一种用于使用异步时间对准来复用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被多个编码器，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

US08428958B2 Apparatus and method of encoding and decoding signals 有权
标题翻译：信号编码和解码的装置和方法
公开(公告)号：US08428958B2
公开(公告)日：2013-04-23
申请号：US12246570
申请日：2008-10-07
申请人： Ho-sang Sung , Eun-mi Oh , Jung-hoe Kim , Ki-hyun Choo , Mi-young Kim
发明人： Ho-sang Sung , Eun-mi Oh , Jung-hoe Kim , Ki-hyun Choo , Mi-young Kim
IPC分类号： G10L19/00
CPC分类号： G10L19/002 , G10L19/00 , G10L19/18
摘要： A method of encoding an audio signal, where signals including two or more channel signals are downmixed to a mono signal, the mono signal is divided into a low-frequency signal and a high-frequency signal, the low-frequency signal is encoded through algebraic code excited linear prediction (ACELP) or transform coded excitation (TCX), and the high-frequency signal is encoded using the low-frequency signal. A method of decoding of an audio signal, a low-frequency signal encoded through ACELP or TCX is decoded, a high-frequency signal is decoded using the low-frequency signal, the low-frequency signal and the high-frequency signal are combined to generate a mono signal, and the mono signal is upmixed by decoding spatial parameters regarding signals including two or more channel signals.
摘要翻译：一种编码音频信号的方法，其中包括两个或更多个信道信号的信号被下混合到单声道信号，单声道信号被分为低频信号和高频信号，低频信号通过代数代码激励线性预测（ACELP）或变换编码激励（TCX），并且使用低频信号对高频信号进行编码。解码音频信号的方法，通过ACELP或TCX编码的低频信号进行解码，使用低频信号对低频信号进行解码，将低频信号和高频信号合成为产生单声道信号，并且单声道信号通过解码关于包括两个或更多个声道信号的信号的空间参数来混合。

38. 发明申请

US20120134501A1 METHOD AND APPARATUS FOR ENCODING AND DECODING STEREO SIGNAL AND MULTI-CHANNEL SIGNAL 有权
标题翻译：编码和解码立体信号和多信道信号的方法和装置
公开(公告)号：US20120134501A1
公开(公告)日：2012-05-31
申请号：US13366455
申请日：2012-02-06
申请人： Ki-hyun Choo , Eun-mi Oh , Jung-hoe Kim , Boris Kudryashov , Sergey Petrov
发明人： Ki-hyun Choo , Eun-mi Oh , Jung-hoe Kim , Boris Kudryashov , Sergey Petrov
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04H20/88 , H04H20/89 , H04S3/00 , H04S2420/03
摘要： Provided are a method and apparatus for encoding and decoding a stereo signal or a multi-channel signal. According to the method and apparatus, a stereo signal or a multi-channel signal can be encoded and/or decoded by generating parameters based on a mono signal.
摘要翻译：提供了一种用于对立体声信号或多声道信号进行编码和解码的方法和装置。根据该方法和装置，可以通过基于单声道信号产生参数来对立体声信号或多声道信号进行编码和/或解码。

39. 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。

40. 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。

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