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：US08712062B2

公开(公告)日：2014-04-29

申请号：US13607991

申请日：2012-09-10

申请人： Eun-mi Oh ,  Anton Porov ,  Jung-hoe Kim

发明人： Eun-mi Oh ,  Anton Porov ,  Jung-hoe Kim

IPC分类号： H04B15/00

摘要： Provided is a method and apparatus for encoding/decoding an audio signal. Sections which are not used to output noise components near important spectral components and sub-bands which are not used to output noise components, are determined to be encoded or decoded, so that the efficiency of encoding and decoding an audio signal increases, and sound quality can be improved using less bits.

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：US20120221343A1

公开(公告)日：2012-08-30

申请号：US13464509

申请日：2012-05-04

申请人： Mi Young KIM ,  Jung Hoe Kim ,  Hwan Shim ,  Eun MI OH

发明人： Mi Young KIM ,  Jung Hoe Kim ,  Hwan Shim ,  Eun MI OH

IPC分类号： G10L19/00

CPC分类号： G10L19/008

摘要： An apparatus for encoding/decoding a multichannel signal. The apparatus for encoding/decoding a multichannel signal processes phase parameters for phase information among a plurality of channels constituting the multichannel signal in consideration of the characteristics of the multichannel signal. The apparatus generates an encoded bit stream for the multichannel signal using the processed phase parameters and the mono signal extracted from the multichannel signal.

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：US20120010891A1

公开(公告)日：2012-01-12

申请号：US13126947

申请日：2009-10-28

申请人： Jung Hoe Kim ,  Eunmi Oh ,  Mi Young Kim ,  Ki Hyun Choo

发明人： Jung Hoe Kim ,  Eunmi Oh ,  Mi Young Kim ,  Ki Hyun Choo

IPC分类号： G10L19/00

CPC分类号： G10L19/008

摘要： An apparatus and method for encoding/decoding a multi-channel signal may be provided. The apparatus of encoding a multi-channel signal may insert information about whether to encode a phase parameter indicating phase information of a plurality of channels, included in the multi-channel signal, in a bitstream of the multi-channel signal. The apparatus of decoding a multi-channel signal may determine whether to up-mix a mono signal using the phase parameter based on the information about whether to encode.

公开(公告)号：US08046234B2

公开(公告)日：2011-10-25

申请号：US10735894

申请日：2003-12-16

申请人： Jung-hoe Kim ,  Sang-wook Kim ,  Eun-mi Oh

发明人： Jung-hoe Kim ,  Sang-wook Kim ,  Eun-mi Oh

IPC分类号： G10L19/00

CPC分类号： G10L19/24

摘要： Method and apparatus for encoding/decoding audio data with scalability are provided. The method includes slicing audio data so that sliced audio data corresponds to a plurality of layers, obtaining scale band information and coding band information corresponding to each of the plurality of layers, coding additional information containing scale factor information and coding model information based on scale band information and coding band information corresponding to a first layer, obtaining quantized samples by quantizing audio data corresponding to the first layer with reference to the scale factor information, coding the obtained plurality of quantized samples in units of symbols in order from a symbol formed with most significant bits (MSB) down to a symbol formed with least significant bits (LSB) by referring to the coding model information, and repeatedly performing the steps with increasing the ordinal number of the layer one by one every time, until coding for the plurality of layers is finished. According to the method, fine grain scalability (FGS) can be provided with a lower complexity and a better audio quality can be provided even in a lower layer.

摘要翻译： 提供了用于以可扩展性对音频数据进行编码/解码的方法和装置。 该方法包括对音频数据进行切片，使切片的音频数据对应于多个层，获得与多个层中的每一层相对应的尺度带信息和编码频带信息，编码包含比例因子信息的附加信息和基于比例带的编码模型信息 信息和编码频带信息，通过参照比例因子信息量化与第一层相对应的音频数据来获得量化样本，以从符号形式开始的符号顺序对所获得的多个量化样本进行编码 通过参考编码模型信息将有效位（MSB）下降到由最低有效位（LSB）形成的符号，并且每次都逐个增加层数的顺序重复执行步骤，直到多个 层完成。 根据该方法，可以提供细小的可缩放性（FGS），具有较低的复杂度，即使在较低层也可提供更好的音频质量。

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：US20110103592A1

公开(公告)日：2011-05-05

申请号：US12926054

申请日：2010-10-22

申请人： Jung Hoe Kim ,  Eun Mi Oh

发明人： Jung Hoe Kim ,  Eun Mi Oh

IPC分类号： H04R5/00

CPC分类号： G10L19/008 ,  G10L19/12 ,  G10L19/167 ,  G10L19/22 ,  G10L21/038 ,  H04N21/4382

摘要： Provided is an apparatus and method of encoding and decoding multiple channel signals based upon phase information and one or more residual signals.

摘要翻译： 提供了一种基于相位信息和一个或多个残余信号对多个信道信号进行编码和解码的装置和方法。