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.

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。

公开(公告)号：US08712782B2

公开(公告)日：2014-04-29

申请号：US11939074

申请日：2007-11-13

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

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

IPC分类号： G10L21/00 ,  G10L19/22 ,  G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L19/18

摘要： A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.

公开(公告)号：US08625811B2

公开(公告)日：2014-01-07

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。

公开(公告)号：US08340962B2

公开(公告)日：2012-12-25

申请号：US13220193

申请日：2011-08-29

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： G10L19/12

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。

公开(公告)号：US08219393B2

公开(公告)日：2012-07-10

申请号：US11930752

申请日：2007-10-31

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

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

IPC分类号： G10L21/00

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。

公开(公告)号：US08010352B2

公开(公告)日：2011-08-30

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： G10L19/12

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。

公开(公告)号：US20080253276A1

公开(公告)日：2008-10-16

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。

公开(公告)号：US20080120095A1

公开(公告)日：2008-05-22

申请号：US11941249

申请日：2007-11-16

申请人： Eun-mi OH ,  Chang-youg Son ,  Ki-hyun Choo ,  Jung-hoe Kim

发明人： Eun-mi OH ,  Chang-youg Son ,  Ki-hyun Choo ,  Jung-hoe Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/20 ,  G10L19/0204 ,  G10L19/0212 ,  G10L19/032

摘要： A method and apparatus to encode and/or decode a speech signal and/or an audio signal. The apparatus includes a first domain transforming unit, a frequency domain encoding unit, and a multiplexing unit to encode the speech signal and/or an audio signal. The apparatus includes a demultiplexing unit, a frequency domain decoding unit, and a second domain inverse transformation unit to decode the speech signal and/or the audio signal. The method and apparatus are capable of effectively encoding or decoding all of a speech signal, an audio signal, and a mixed signal of a speech signal and an audio signal, and improving the quality of sound by using a small number of bits.

摘要翻译： 一种用于对语音信号和/或音频信号进行编码和/或解码的方法和装置。 该装置包括第一域变换单元，频域编码单元和用于对语音信号和/或音频信号进行编码的复用单元。 该装置包括解复用单元，频域解码单元和用于解码语音信号和/或音频信号的第二域逆变换单元。 该方法和装置能够有效地编码或解码语音信号，音频信号和语音信号和音频信号的混合信号，并且通过使用少量的比特来提高声音的质量。

公开(公告)号：US20070271480A1

公开(公告)日：2007-11-22

申请号：US11749249

申请日：2007-05-16

申请人： Eun-mi OH ,  Ho-sang Sung ,  Chang-yong Son ,  Ki-hyun Choo ,  Jung-hoe Kim

发明人： Eun-mi OH ,  Ho-sang Sung ,  Chang-yong Son ,  Ki-hyun Choo ,  Jung-hoe Kim

IPC分类号： G06F11/00

CPC分类号： G10L19/005

摘要： A method and apparatus to decode audio data constructed with a plurality of layers. An error concealment method of process a decoded bitstream selects one of a frequency domain and a time domain in order to conceal the errors, detects a position where the errors exist in a frame when the error concealment method in the frequency domain is selected, and conceals the errors only in a segment after the detected position.

摘要翻译： 一种解码由多层构成的音频数据的方法和装置。 处理解码比特流的错误隐藏方法选择频域和时域中的一个以隐藏错误，当选择频域中的错误隐藏方法时，检测在帧中存在错误的位置，并且隐藏 检测到位置之后的错误。