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。

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：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：US07752041B2

公开(公告)日：2010-07-06

申请号：US11137427

申请日：2005-05-26

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/035

摘要： A method and an apparatus for encoding/decoding a digital signal are provided. First, a digital input signal is transformed into samples to remove redundant information among signals. Then, a lookup table corresponding to a characteristic of the input signal is selected among a plurality of lookup tables that indicate different numbers of bits allocated for each quantization unit depending on different characteristics of input signals, and the number of bits allocated for each quantization unit is acquired from the selected lookup table. Next, a distribution of samples within each quantization unit is divided into a predetermined number of sections, and the samples are linearly quantized using the allocated number of bits on a section-by-section basis. Thereafter, a bitstream comprised of frames is produced from the quantized samples and predetermined side information so that information about a frame length is stored in the end of frame.

摘要翻译： 提供了一种用于对数字信号进行编码/解码的方法和装置。 首先，将数字输入信号变换为采样，以消除信号之间的冗余信息。 然后，在多个查找表中选择与输入信号的特性相对应的查找表，该查找表根据输入信号的不同特性指示分配给每个量化单元的不同位数，并且为每个量化单元分配的位数 从所选查询表中获取。 接下来，将每个量化单元内的样本的分布划分为预定数量的部分，并且使用分配的位数逐行地对样本进行线性量化。 此后，从量化样本和预定侧信息产生由帧构成的比特流，使得关于帧长度的信息被存储在帧的结尾。

公开(公告)号：US20050270195A1

公开(公告)日：2005-12-08

申请号：US11137427

申请日：2005-05-26

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

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

IPC分类号： G10L19/14 ,  H03M7/30 ,  H03M3/00

CPC分类号： G10L19/035

摘要： A method and an apparatus for encoding/decoding a digital signal are provided. First, a digital input signal is transformed into samples to remove redundant information among signals. Then, a lookup table corresponding to a characteristic of the input signal is selected among a plurality of lookup tables that indicate different numbers of bits allocated for each quantization unit depending on different characteristics of input signals, and the number of bits allocated for each quantization unit is acquired from the selected lookup table. Next, a distribution of samples within each quantization unit is divided into a predetermined number of sections, and the samples are linearly quantized using the allocated number of bits on a section-by-section basis. Thereafter, a bitstream comprised of frames is produced from the quantized samples and predetermined side information so that information about a frame length is stored in the end of frame.

摘要翻译： 提供了一种用于对数字信号进行编码/解码的方法和装置。 首先，将数字输入信号变换为采样，以消除信号之间的冗余信息。 然后，在多个查找表中选择与输入信号的特性相对应的查找表，该查找表根据输入信号的不同特性指示分配给每个量化单元的不同位数，并且为每个量化单元分配的位数 从所选查询表中获取。 接下来，将每个量化单元内的样本的分布划分为预定数量的部分，并且使用分配的位数逐行地对样本进行线性量化。 此后，从量化样本和预定侧信息产生由帧构成的比特流，使得关于帧长度的信息被存储在帧的结尾。

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：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：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：US07983346B2

公开(公告)日：2011-07-19

申请号：US11125076

申请日：2005-05-10

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

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

IPC分类号： H04B14/04

CPC分类号： G10L19/032

摘要： A method of encoding/decoding a digital signal using linear quantization by sections, and an apparatus for the same are provided. The method of encoding includes: converting a digital input signal, and removing redundant information from the digital signal; allocating a number of bits allocated to each predetermined quantized unit considering the importance of the digital signal; dividing the distribution of signal values into predetermined sections based on the predetermined quantized units, and linear quantizing data converted pin the operation of converting the digital input signal by sections; and generating a bit stream from the linear quantized data and predetermined side information. Therefore, a sound quality is improved compared to a sound quality produced by conventional linear quantizing devices and a complexity of a non-linear quantizing device is reduced.

摘要翻译： 提供了使用线性量化部分对数字信号进行编码/解码的方法及其装置。 编码方法包括：转换数字输入信号，从数字信号中去除冗余信息; 考虑数字信号的重要性，分配分配给每个预定量化单元的位数; 基于预定的量化单位将信号值的分布划分为预定的部分，并且线性量化数据转换为将数字输入信号逐段转换的操作; 以及从所述线性量化数据和预定侧信息生成比特流。 因此，与传统线性量化装置产生的声音质量相比，提高了音质，并且减少了非线性量化装置的复杂性。

公开(公告)号：US20100239027A1

公开(公告)日：2010-09-23

申请号：US12792048

申请日：2010-06-02

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

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

IPC分类号： H04B14/04

CPC分类号： G10L19/032

摘要： A method of encoding/decoding a digital signal using linear quantization by sections, and an apparatus for the same are provided. The method of encoding includes: converting a digital input signal, and removing redundant information from the digital signal; allocating a number of bits allocated to each predetermined quantized unit considering the importance of the digital signal; dividing the distribution of signal values into predetermined sections based on the predetermined quantized units, and linear quantizing data converted pin the operation of converting the digital input signal by sections; and generating a bit stream from the linear quantized data and predetermined side information. Therefore, a sound quality is improved compared to a sound quality produced by conventional linear quantizing devices and a complexity of a non-linear quantizing device is reduced.

摘要翻译： 提供了使用线性量化部分对数字信号进行编码/解码的方法及其装置。 编码方法包括：转换数字输入信号，从数字信号中去除冗余信息; 考虑数字信号的重要性，分配分配给每个预定量化单元的位数; 基于预定的量化单位将信号值的分布划分为预定部分，以及在通过部分转换数字输入信号的操作中转换的线性量化数据; 以及从所述线性量化数据和预定侧信息生成比特流。 因此，与传统线性量化装置产生的声音质量相比，提高了音质，并且减少了非线性量化装置的复杂性。