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：US07620543B2

公开(公告)日：2009-11-17

申请号：US11033733

申请日：2005-01-13

申请人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

发明人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L19/173

摘要： A method, medium, and apparatus for converting compressed audio data, including decoding compressed audio input data, in accordance with a corresponding compression format, coding a result of the decoding, in accordance with a predetermined compression format, and combining a result of the coding with the side information to generate audio output data to be compressed according to the predetermined compression format.

摘要翻译： 一种根据相应压缩格式转换压缩音频数据的方法，介质和装置，包括解码压缩音频输入数据，根据预定压缩格式编码解码结果，并将编码结果 利用侧信息根据预定的压缩格式生成要压缩的音频输出数据。

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：US20050180586A1

公开(公告)日：2005-08-18

申请号：US11033733

申请日：2005-01-13

申请人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

发明人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

IPC分类号： G10L19/02 ,  G10L19/03 ,  G11B20/10 ,  H03G7/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L19/173

摘要： A method, medium, and apparatus for converting compressed audio data, including decoding compressed audio input data, in accordance with a corresponding compression format, coding a result of the decoding, in accordance with a predetermined compression format, and combining a result of the coding with the side information to generate audio output data to be compressed according to the predetermined compression format.

摘要翻译： 一种根据相应压缩格式转换压缩音频数据的方法，介质和装置，包括解码压缩音频输入数据，根据预定压缩格式编码解码结果，并将编码结果 利用侧信息根据预定的压缩格式生成要压缩的音频输出数据。

公开(公告)号：US20060013405A1

公开(公告)日：2006-01-19

申请号：US11180625

申请日：2005-07-14

申请人： Ennmi Oh ,  Miyoung Kim ,  Sangwook Kim ,  Dohyung Kim ,  Junghoe Kim

发明人： Ennmi Oh ,  Miyoung Kim ,  Sangwook Kim ,  Dohyung Kim ,  Junghoe Kim

IPC分类号： H04R5/00

CPC分类号： H04S3/008 ,  G10L19/008

摘要： A multichannel audio data encoding and/or decoding method and apparatus. The encoding method includes: encoding mono and/or stereo audio data; and encoding extended multichannel audio data other than the mono and/or stereo audio data. The decoding method includes: decoding mono and/or stereo audio data; examining whether there is extended multichannel audio data to be decoded other than the mono and/or stereo audio data; and when there is extended data to be decoded, decoding the extended multichannel audio data.

摘要翻译： 多声道音频数据编码和/或解码方法和装置。 编码方法包括：对单声道和/或立体声音频数据进行编码; 以及对单声道和/或立体声音频数据以外的扩展多声道音频数据进行编码。 解码方法包括：对单声道和/或立体声音频数据进行解码; 检查除了单声道和/或立体声音频数据之外是否存在要被解码的扩展多声道音频数据; 并且当存在要解码的扩展数据时，对扩展的多声道音频数据进行解码。

公开(公告)号：US20050254588A1

公开(公告)日：2005-11-17

申请号：US11080409

申请日：2005-03-16

申请人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

发明人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： G10L19/00 ,  G10L19/02 ,  H03M7/30 ,  H04K1/10

CPC分类号： G10L19/035

摘要： A digital signal encoding method and apparatus using a plurality of lookup tables. The method includes: preparing a plurality of lookup tables storing numbers of allocated bits for encoding frequency bands of an input signal according to a characteristic of the input signal in a predetermined number of addresses; dividing an input signal in the time domain into signals in predetermined frequency bands; calculating address values of the frequency bands; selecting one of the plurality of lookup tables according to the characteristic of the input signal; extracting numbers of allocated bits of addresses having the calculated address values from the selected lookup table with respect to the frequency bands and allocating the numbers of bits to the frequency bands; and generating a bitstream by quantizing the input signal according to the numbers of allocated bits. Bit amount control suitable for a characteristic of an input signal can be performed by extracting numbers of allocated bits of frequency bands from an optimal lookup table selected according to the characteristic of the input signal. Also, an additional computational time can be reduced by using each occupancy rate per frequency band equal to each address of the lookup table as the characteristic of the input signal.

摘要翻译： 一种使用多个查找表的数字信号编码方法和装置。 该方法包括：根据预定数量的地址中的输入信号的特性，准备多个查找表，该查找表存储用于编码输入信号频带的分配位数; 将时域中的输入信号划分成预定频带中的信号; 计算频带的地址值; 根据输入信号的特性选择多个查找表之一; 从所选择的查找表中提取相对于频带的具有所计算的地址值的地址的分配比特数，并将比特数分配给频带; 以及通过根据所分配的比特数来量化输入信号来生成比特流。 可以通过从根据输入信号的特性选择的最佳查找表中提取频带的分配比特数来执行适合于输入信号特性的比特量控制。 而且，通过使用等于查找表的每个地址的每个频带的每个占用率作为输入信号的特性，可以减少额外的计算时间。

公开(公告)号：US20100332239A1

公开(公告)日：2010-12-30

申请号：US12923171

申请日：2010-09-07

申请人： Miyoung Kim ,  Sangwook Kim ,  Dohyung Kim ,  Shihwa Lee ,  Junghoe Kim

发明人： Miyoung Kim ,  Sangwook Kim ,  Dohyung Kim ,  Shihwa Lee ,  Junghoe Kim

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L19/0017 ,  G10L19/24

摘要： An apparatus and method encode audio data, and an apparatus and method decode encoded audio data. An audio data encoding apparatus includes: a scalable encoding unit dividing audio data into a plurality of layers, representing the audio data in predetermined numbers of bits in each of the plurality of layers, and encoding a lower layer prior to encoding an upper layer and an upper bit of each layer prior to encoding a lower bit of each layer; an SBR encoding unit generating spectral band replication (SBR) data that has information with respect to audio data in a frequency band of frequencies equal to or greater than a predetermined frequency among the audio data to be encoded, and encoding the SBR data; and a bitstream production unit generating a bitstream using the encoded SBR data and the encoded audio data corresponding to a predetermined bitrate.

摘要翻译： 一种对音频数据进行编码的装置和方法，并且对编码音频数据进行解码的装置和方法。 音频数据编码装置包括：可分级编码单元，将音频数据划分成多个层，以多个层中的每个层中的预定位数表示音频数据;以及在对上层进行编码之前编码下层， 在对每个层的较低位进行编码之前的每一层的高位; SBR编码单元，生成频谱带复制（SBR）数据，其对于要编码的音频数据中具有等于或大于预定频率的频率的频带中的音频数据具有信息，并对SBR数据进行编码; 以及比特流产生单元，其使用编码的SBR数据和对应于预定比特率的编码音频数据来生成比特流。

公开(公告)号：US07650278B2

公开(公告)日：2010-01-19

申请号：US11080409

申请日：2005-03-16

申请人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

发明人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/035

摘要： A digital signal encoding method and apparatus using a plurality of lookup tables. The method includes: preparing a plurality of lookup tables storing numbers of allocated bits for encoding frequency bands of an input signal according to a characteristic of the input signal in a predetermined number of addresses; dividing an input signal in the time domain into signals in predetermined frequency bands; calculating address values of the frequency bands; selecting one of the plurality of lookup tables according to the characteristic of the input signal; extracting numbers of allocated bits of addresses having the calculated address values from the selected lookup table with respect to the frequency bands and allocating the numbers of bits to the frequency bands; and generating a bitstream by quantizing the input signal according to the numbers of allocated bits. Bit amount control suitable for a characteristic of an input signal can be performed by extracting numbers of allocated bits of frequency bands from an optimal lookup table selected according to the characteristic of the input signal. Also, an additional computational time can be reduced by using each occupancy rate per frequency band equal to each address of the lookup table as the characteristic of the input signal.

摘要翻译： 一种使用多个查找表的数字信号编码方法和装置。 该方法包括：根据预定数量的地址中的输入信号的特性，准备多个查找表，该查找表存储用于编码输入信号频带的分配位数; 将时域中的输入信号划分成预定频带中的信号; 计算频带的地址值; 根据输入信号的特性选择多个查找表之一; 从所选择的查找表中提取相对于频带的具有所计算的地址值的地址的分配比特数，并将比特数分配给频带; 以及通过根据所分配的比特数来量化输入信号来生成比特流。 可以通过从根据输入信号的特性选择的最佳查找表中提取频带的分配比特数来执行适合于输入信号特性的比特量控制。 而且，通过使用等于查找表的每个地址的每个频带的每个占用率作为输入信号的特性，可以减少额外的计算时间。