公开(公告)号：US07617110B2

公开(公告)日：2009-11-10

申请号：US11066431

申请日：2005-02-28

申请人： Junghoo Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

发明人： Junghoo Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/0017

摘要： A lossless audio encoding/decoding method, medium, and apparatus. The lossless audio encoding method includes converting an audio signal in a time domain into an audio spectral signal with an integer in a frequency domain, mapping the audio spectral signal in the frequency domain to a bit plane signal according to its frequency, and losslessly encoding binary samples of bit planes using a probability model determined according to a predetermined context. The lossless audio decoding method includes extracting a predetermined lossy bitstream and an error bitstream from error data by demultiplexing an audio bitstream, the error data corresponding to a difference between lossy encoded audio data and an audio spectral signal with an integer in a frequency domain, lossy decoding the extracted encoded lossy bitstream, losslessly decoding the extracted error bitstream, and restoring the original audio frequency spectral signal using the decoded lossy bitstream and error bitstream.

摘要翻译： 无损音频编码/解码方法，介质和装置。 无损音频编码方法包括将时域中的音频信号转换为频域中的整数的音频频谱信号，根据频率将频域中的音频频谱信号映射到比特平面信号，并将无损编码二进制 使用根据预定上下文确定的概率模型的位平面样本。 无损音频解码方法包括通过解复用音频比特流从误差数据中提取预定的有损比特流和错误比特流，对应于有损编码的音频数据与频域中的整数的音频频谱信号之间的差异的误差数据， 解码所提取的编码有损比特流，对所提取的错误比特流进行无损解码，以及使用解码的有损比特流和错误比特流恢复原始音频频谱信号。

公开(公告)号：US20050192799A1

公开(公告)日：2005-09-01

申请号：US11066431

申请日：2005-02-28

申请人： Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

发明人： Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

IPC分类号： G10L19/02 ,  G10L19/00 ,  H04N5/60

CPC分类号： G10L19/0017

摘要： A lossless audio encoding/decoding method, medium, and apparatus. The lossless audio encoding method includes converting an audio signal in a time domain into an audio spectral signal with an integer in a frequency domain, mapping the audio spectral signal in the frequency domain to a bit plane signal according to its frequency, and losslessly encoding binary samples of bit planes using a probability model determined according to a predetermined context. The lossless audio decoding method includes extracting a predetermined lossy bitstream and an error bitstream from error data by demultiplexing an audio bitstream, the error data corresponding to a difference between lossy encoded audio data and an audio spectral signal with an integer in a frequency domain, lossy decoding the extracted encoded lossy bitstream, losslessly decoding the extracted error bitstream, and restoring the original audio frequency spectral signal using the decoded lossy bitstream and error bitstream

摘要翻译： 无损音频编码/解码方法，介质和装置。 无损音频编码方法包括将时域中的音频信号转换为频域中的整数的音频频谱信号，根据频率将频域中的音频频谱信号映射到比特平面信号，并将无损编码二进制 使用根据预定上下文确定的概率模型的位平面样本。 无损音频解码方法包括通过解复用音频比特流从误差数据中提取预定的有损比特流和错误比特流，对应于有损编码的音频数据与频域中的整数的音频频谱信号之间的差异的误差数据， 对所提取的编码有损比特流进行解码，对所提取的错误比特流进行无损解码，以及使用解码的有损比特流和误码比特流恢复原始音频频谱信号

公开(公告)号：US20050203731A1

公开(公告)日：2005-09-15

申请号：US11076284

申请日：2005-03-10

申请人： Ennmi Oh ,  Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim

发明人： Ennmi Oh ,  Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： H03M7/30 ,  G10L19/00 ,  G10L19/02 ,  H03M7/40

CPC分类号： G10L19/0017

摘要： A lossless audio coding and/or decoding method and apparatus are provided. The coding method includes: mapping the audio signal in the frequency domain having an integer value into a bit-plane signal with respect to the frequency; obtaining a most significant bit and a Golomb parameter for each bit-plane; selecting a binary sample on a bit-plane to be coded in the order from the most significant bit to the least significant bit and from a lower frequency component to a higher frequency component; calculating the context of the selected binary sample by using significances of already coded bit-planes for each of a plurality of frequency lines existing in the vicinity of a frequency line to which the selected binary sample belongs; selecting a probability model by using the obtained Golomb parameter and the calculated contexts; and lossless-coding the binary sample by using the selected probability model. According to the method and apparatus, a compression ratio better than that of the bit-plane Golomb code (BPGC) is provided through context-based coding method having optimal performance.

摘要翻译： 提供了一种无损音频编码和/或解码方法和装置。 编码方法包括：将具有整数值的频域中的音频信号映射到相对于频率的位平面信号中; 为每个位平面获取最高有效位和Golomb参数; 在从最高有效位到最低有效位以及从较低频率分量到较高频率分量的顺序中选择待编码的位平面上的二进制采样; 通过使用存在于所选择的二进制样本所属的频率线附近的多个频率线中的每一个的已经编码的位平面的重要性来计算所选二进制样本的上下文; 通过使用获得的Golomb参数和计算的上下文来选择概率模型; 并通过使用所选择的概率模型对二进制样本进行无损编码。 根据该方法和装置，通过具有最佳性能的基于上下文的编码方法提供比位平面Golomb码（BPGC）的压缩比更好的压缩比。

公开(公告)号：US07660720B2

公开(公告)日：2010-02-09

申请号：US11076284

申请日：2005-03-10

申请人： Ennmi Oh ,  Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim

发明人： Ennmi Oh ,  Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/0017

摘要： A lossless audio coding and/or decoding method and apparatus are provided. The coding method includes: mapping the audio signal in the frequency domain having an integer value into a bit-plane signal with respect to the frequency; obtaining a most significant bit and a Golomb parameter for each bit-plane; selecting a binary sample on a bit-plane to be coded in the order from the most significant bit to the least significant bit and from a lower frequency component to a higher frequency component; calculating the context of the selected binary sample by using significances of already coded bit-planes for each of a plurality of frequency lines existing in the vicinity of a frequency line to which the selected binary sample belongs; selecting a probability model by using the obtained Golomb parameter and the calculated contexts; and lossless-coding the binary sample by using the selected probability model. According to the method and apparatus, a compression ratio better than that of the bit-plane Golomb code (BPGC) is provided through context-based coding method having optimal performance.

摘要翻译： 提供了一种无损音频编码和/或解码方法和装置。 编码方法包括：将具有整数值的频域中的音频信号映射到相对于频率的位平面信号中; 为每个位平面获取最高有效位和Golomb参数; 在从最高有效位到最低有效位以及从较低频率分量到较高频率分量的顺序中选择待编码的位平面上的二进制采样; 通过使用存在于所选择的二进制样本所属的频率线附近的多个频率线中的每一个的已经编码的位平面的重要性来计算所选二进制样本的上下文; 通过使用获得的Golomb参数和计算的上下文来选择概率模型; 并通过使用所选择的概率模型对二进制样本进行无损编码。 根据该方法和装置，通过具有最佳性能的基于上下文的编码方法提供比位平面Golomb码（BPGC）的压缩比更好的压缩比。

公开(公告)号：US20070078646A1

公开(公告)日：2007-04-05

申请号：US11535638

申请日：2006-09-27

申请人： Miao Lei ,  Miyoung Kim ,  Shihwa Lee ,  Sangwook Kim ,  Dohyung Kim

发明人： Miao Lei ,  Miyoung Kim ,  Shihwa Lee ,  Sangwook Kim ,  Dohyung Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/0208 ,  G10L19/24

摘要： A method and apparatus to encode/decode an audio signal, in which a bit rate for each bit plane can be controlled. A method of encoding an audio signal for each of a plurality of bit plane can include dividing the audio signal into a plurality of frequency bands and encoding the bit planes of the frequency bands from a low frequency band to a high frequency band, wherein, in the encoding the bit planes of the frequency bands, the bit planes are encoded from the most significant bit (MSB) to the least significant bit (LSB) within bits allocated for the frequency bands, and when there are allocated bits remaining after the encoding of the currently encoded frequency band, un-encoded bit planes corresponding to the MSB in a frequency band that has the fewest encoded bit planes among frequency bands with a lower frequency than the currently encoded frequency band are encoded using the remaining allocated bits. Accordingly, when encoding/decoding an audio signal, an encoding sequence of bit planes is determined so that an audio signal that significantly affects audio quality during decoding is first encoded, thereby reducing audio quality deterioration at a low bit rate.

摘要翻译： 一种编码/解码音频信号的方法和装置，其中可以控制每个比特平面的比特率。 对多个位平面中的每一个编码音频信号的方法可以包括将音频信号划分成多个频带并将频带的位平面从低频带编码到高频带，其中，在 对频带的位平面进行编码，在针对频带分配的位内，将位平面从最高有效位（MSB）编码为最低有效位（LSB），并且当编码 使用剩余的分配比特来编码当前编码的频带，对应于具有比当前编码的频带更低的频率的频带中具有最少编码比特平面的频带中的MSB的未编码比特平面。 因此，当对音频信号进行编码/解码时，确定位平面的编码序列，使得首先编码在解码期间显着影响音频质量的音频信号，从而以低比特率降低音频质量恶化。

公开(公告)号：US20060293902A1

公开(公告)日：2006-12-28

申请号：US11445312

申请日：2006-06-02

申请人： Sanwook Kim ,  Dohyung Kim ,  Miyoung Kim ,  Miao Lei ,  Shihwa Lee ,  Jianxian Yan

发明人： Sanwook Kim ,  Dohyung Kim ,  Miyoung Kim ,  Miao Lei ,  Shihwa Lee ,  Jianxian Yan

IPC分类号： G10L21/00

CPC分类号： G10L19/167 ,  G10L19/008

摘要： A method and apparatus for generating a bitstream of an audio signal, in which an audio signal can be easily extended to a multichannel audio signal, the processing speed of an audio signal can be improved, and channel signals of an audio signal can be processed simultaneously, and an audio encoding/decoding method and apparatus using the method and apparatus. The method for generating a bitstream of an audio signal using an encoded audio signal and encoding information includes generating a flag indicating whether the encoded audio signal is a multichannel audio signal, generating a bitstream header including the generated flag, and generating the bitstream using the generated bitstream header and the encoded audio signal.

摘要翻译： 一种用于生成音频信号的比特流的方法和装置，其中音频信号可以容易地扩展到多声道音频信号，可以提高音频信号的处理速度，并且可以同时处理音频信号的信道信号 以及使用该方法和装置的音频编码/解码方法和装置。 使用编码音频信号和编码信息生成音频信号的比特流的方法包括：生成指示编码音频信号是多声道音频信号的标志，生成包括所生成的标志的比特流头部，以及使用生成的 比特流报头和编码音频信号。

公开(公告)号：US07869891B2

公开(公告)日：2011-01-11

申请号：US11445312

申请日：2006-06-02

申请人： Sanwook Kim ,  Dohyung Kim ,  Miyoung Kim ,  Miao Lei ,  Shihwa Lee ,  Jianxian Yan

发明人： Sanwook Kim ,  Dohyung Kim ,  Miyoung Kim ,  Miao Lei ,  Shihwa Lee ,  Jianxian Yan

IPC分类号： G06F17/00

CPC分类号： G10L19/167 ,  G10L19/008

摘要： A method and apparatus for generating a bitstream of an audio signal, in which an audio signal can be easily extended to a multichannel audio signal, the processing speed of an audio signal can be improved, and channel signals of an audio signal can be processed simultaneously, and an audio encoding/decoding method and apparatus using the method and apparatus. The method for generating a bitstream of an audio signal using an encoded audio signal and encoding information includes generating a flag indicating whether the encoded audio signal is a multichannel audio signal, generating a bitstream header including the generated flag, and generating the bitstream using the generated bitstream header and the encoded audio signal.

摘要翻译： 一种用于生成音频信号的比特流的方法和装置，其中音频信号可以容易地扩展到多声道音频信号，可以提高音频信号的处理速度，并且可以同时处理音频信号的信道信号 以及使用该方法和装置的音频编码/解码方法和装置。 使用编码音频信号和编码信息生成音频信号的比特流的方法包括：生成指示编码音频信号是多声道音频信号的标志，生成包括所生成的标志的比特流头部，以及使用生成的 比特流报头和编码音频信号。

公开(公告)号：US08824690B2

公开(公告)日：2014-09-02

申请号：US13113826

申请日：2011-05-23

申请人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

发明人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

IPC分类号： H04R5/00

CPC分类号： G10L19/008 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/03 ,  H04S2420/01

摘要： An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.

摘要翻译： 一种使用空间信息处理多声道音频信号的装置和方法。 该装置包括：主编码单元，通过将包含在多声道音频信号中的包围成分的空间信息应用于多声道音频信号，使用多声道音频信号产生侧信息或下行信号的立体声信号， 混合结果，对立体声信号和侧信息进行编码，并将编码结果作为编码信号发送; 以及主解码单元，接收编码信号，使用接收的编码信号对立体声信号和侧信息进行解码，使用解码的侧信息进行解码的立体声信号的混合，以及恢复多声道音频信号。

公开(公告)号：US20110224993A1

公开(公告)日：2011-09-15

申请号：US13113826

申请日：2011-05-23

申请人： Junghoe KIM ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

发明人： Junghoe KIM ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/03 ,  H04S2420/01

摘要： An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.

摘要翻译： 一种使用空间信息处理多声道音频信号的装置和方法。 该装置包括：主编码单元，通过将包含在多声道音频信号中的包围成分的空间信息应用于多声道音频信号，使用多声道音频信号产生侧信息或下行信号的立体声信号， 混合结果，对立体声信号和侧信息进行编码，并将编码结果作为编码信号发送; 以及主解码单元，接收编码信号，使用接收的编码信号对立体声信号和侧信息进行解码，使用解码的侧信息进行解码的立体声信号的混合，以及恢复多声道音频信号。

公开(公告)号：US07961889B2

公开(公告)日：2011-06-14

申请号：US11210908

申请日：2005-08-25

申请人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

发明人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

IPC分类号： H04R5/00

CPC分类号： G10L19/008 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/03 ,  H04S2420/01

摘要： An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.

摘要翻译： 一种使用空间信息处理多声道音频信号的装置和方法。 该装置包括：主编码单元，通过将包含在多声道音频信号中的包围成分的空间信息应用于多声道音频信号，使用多声道音频信号产生侧信息或下行信号的立体声信号， 混合结果，对立体声信号和侧信息进行编码，并将编码结果作为编码信号发送; 以及主解码单元，接收编码信号，使用接收的编码信号对立体声信号和侧信息进行解码，使用解码的侧信息进行解码的立体声信号的混合，以及恢复多声道音频信号。