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31. 发明申请

US20120321090A1 SYSTEM, MEDIUM, AND METHOD OF ENCODING/DECODING MULTI-CHANNEL AUDIO SIGNALS 审中-公开
标题翻译：系统，媒体和编码/解码多通道音频信号的方法
公开(公告)号：US20120321090A1
公开(公告)日：2012-12-20
申请号：US13599147
申请日：2012-08-30
申请人： Junghoe KIM , Miao Lei , Eunmi Oh
发明人： Junghoe KIM , Miao Lei , Eunmi Oh
IPC分类号： H04R5/00
CPC分类号： H03M7/30 , G10L19/008 , G10L19/167 , H04H20/80 , H04S3/002 , H04S3/008 , H04S2420/03
摘要： An system, method, and method of encoding/decoding a multi-channel audio signal, including a decoding level generation unit producing decoding-level information that helps a bitstream including a number of audio channel signals and space information to be decoded into a number of audio channel signals, wherein the space information includes information about magnitude differences and/or similarities between channels, and an audio decoder decoding the bitstream according to the decoding-level information. Accordingly, even a single input bitstream can be decoded into a suitable number of channels depending on the type of a speaker configuration used. Scalable channel decoding can be achieved by partially decoding an input bitstream. In the scalable channel decoding, a decoder may set decoding levels and outputs audio channel signals according to the decoding levels, thereby reducing decoding complexity.
摘要翻译：一种对多声道音频信号进行编码/解码的系统，媒体和方法，包括解码电平生成单元，其产生解码级信息，该解码电平信息有助于将包含多个音频信道信号的位流和空间信息解码为多个音频信道信号，其中所述空间信息包括关于信道之间的幅度差异和/或相似性的信息，以及根据所述解码级别信息对所述比特流进行解码的音频解码器。因此，即使单个输入比特流也可以根据所使用的扬声器配置的类型被解码为适当数量的信道。可以通过对输入比特流进行部分解码来实现可扩展的信道解码。在可扩展信道解码中，解码器可以根据解码电平设置解码电平并输出音频信道信号，从而降低解码复杂度。

32. 发明授权

US08301439B2 Method and apparatus to encode/decode low bit-rate audio signal by approximiating high frequency envelope with strongly correlated low frequency codevectors 有权
标题翻译：通过用强相关低频码矢量近似高频包络来对低比特率音频信号进行编码/解码的方法和装置
公开(公告)号：US08301439B2
公开(公告)日：2012-10-30
申请号：US11456946
申请日：2006-07-12
申请人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
发明人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L21/02 , G10L11/06 , G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/06
摘要： A method of encoding a low bit-rate audio signal includes quantizing and encoding a plurality of low frequency sub-bands of an audio signal in a frequency domain, generating a codebook of codevectors using sub-bands of the audio signal spectrum, detecting an envelope of another frequency sub-band of the audio signal and quantizing and losslessly-encoding the detected envelope, selecting a codevector most similar to the higher frequency sub-band spectrum from the generated codebook's codevectors and determining its codebook codevector index, and generating a bit stream. Decoding the low bit-rate audio signal includes restoring and dividing a bit stream into a plurality of first frequency sub-bands and at least one second frequency sub-band and inversely quantizing the first frequency sub-bands in the bit stream, restoring codebook codevector index information and envelope information for the second frequency sub-band, generating a codebook of codevectors using the inversely quantized first frequency sub-bands, and restoring the second frequency sub-band using the restored codevector index information and the envelope information.
摘要翻译：编码低比特率音频信号的方法包括对频域中的音频信号的多个低频子带进行量化和编码，使用音频信号频谱的子带生成码矢码，检测信号并对所检测的包络进行量化和无损编码，从所生成的码本的码矢量中选择与较高频子带频谱最相似的码矢，并确定其码本码矢量索引，并生成比特流。解码低比特率音频信号包括将比特流恢复和分割成多个第一频率子带和至少一个第二频率子带，并对位流中的第一频率子带进行逆量化，从而恢复码本码矢量用于第二频率子带的索引信息和包络信息，使用反量化的第一频率子带生成码本的码本，以及使用恢复的码矢量索引信息和包络信息来恢复第二频率子带。

33. 发明授权

US07620543B2 Method, medium, and apparatus for converting audio data 有权
标题翻译：用于转换音频数据的方法，介质和装置
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。

34. 发明申请

US20070276655A1 Method and apparatus to search fixed codebook and method and apparatus to encode/decode a speech signal using the method and apparatus to search fixed codebook 失效
标题翻译：使用该方法和装置搜索固定码本的方法和装置，用于搜索固定码本和方法和装置来对语音信号进行编码/解码
公开(公告)号：US20070276655A1
公开(公告)日：2007-11-29
申请号：US11709255
申请日：2007-02-22
申请人： Kangeun Lee , Eunmi Oh , Hosang Sung , Changyong Son , Kihyun Choo , Junghoe Kim
发明人： Kangeun Lee , Eunmi Oh , Hosang Sung , Changyong Son , Kihyun Choo , Junghoe Kim
IPC分类号： G06F15/00 , G06F17/28 , G11B11/00
CPC分类号： G10L19/12 , G10L19/24 , G10L2019/0013
摘要： A method and an apparatus to encode and decode a speech signal using a code excited linear prediction (CELP) algorithm. In order to reduce a bit rate without degrading performance in an enhancement layer based on CELP, each of a fixed codebook of a core layer and a fixed codebook of the enhancement layer is divided into a plurality of spaces. The spaces of the fixed codebook of the enhancement layer excludes a space corresponding to a least distorted space determined from among the spaces of the fixed codebook of the core layer are searched.
摘要翻译：一种使用码激励线性预测（CELP）算法对语音信号进行编码和解码的方法和装置。为了在基于CELP的增强层中降低比特率而不降低性能的情况下，核心层的固定码本和增强层的固定码本中的每一个被分成多个空格。增强层的固定码本的空间不包括与核心层的固定码本的空格中确定的最小失真空间相对应的空间。

35. 发明申请

US20070189426A1 Method, medium, and system decoding and encoding a multi-channel signal 有权
标题翻译：方法，中，系统解码和编码多通道信号
公开(公告)号：US20070189426A1
公开(公告)日：2007-08-16
申请号：US11651633
申请日：2007-01-10
申请人： Junghoe Kim , Eunmi Oh , Kihyun Choo , Miao Lei
发明人： Junghoe Kim , Eunmi Oh , Kihyun Choo , Miao Lei
IPC分类号： H04L27/06
CPC分类号： H04S5/005 , G10L19/008 , H04B1/1646 , H04S3/00 , H04S3/02 , H04S2420/01
摘要： A method, medium, and system decoding and/or encoding multiple channels. Accordingly, down-mixed multiple channels can be decoded/up-mixed to a left channel and a right channel during a first stage, thereby enabling a high quality sound output even in scalable channel decoding.
摘要翻译：方法，介质和系统解码和/或编码多个通道。因此，在第一阶段中，下混合的多个通道可以被解码/上混合到左声道和右声道，从而即使在可扩展的声道解码中也能实现高质量的声音输出。

36. 发明申请

US20070016411A1 METHOD AND APPARATUS TO ENCODE/DECODE LOW BIT-RATE AUDIO SIGNAL 有权
标题翻译：编码/解码低比特率音频信号的方法和装置
公开(公告)号：US20070016411A1
公开(公告)日：2007-01-18
申请号：US11456946
申请日：2006-07-12
申请人： Junghoe Kim , Eunmi Oh , Boria Kudryashov , Koostantin Osipoy
发明人： Junghoe Kim , Eunmi Oh , Boria Kudryashov , Koostantin Osipoy
IPC分类号： G10L21/02
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/06
摘要： A method and apparatus to encode/decode a low bit-rate audio signal. The method of encoding a low bit-rate audio signal, includes quantizing and losslessly-encoding a specific frequency component of an audio signal in a frequency domain, generating codebooks using the audio signal in the frequency domain, detecting an envelope of a frequency component of the audio signal other than the specific frequency component in a specific band unit and quantizing and losslessly-encoding the detected envelope of the other frequency component, selecting a codebook that is most similar to the other frequency component of the audio signal to be encoded from among the generated codebooks and determining a codebook index (fine structure), losslessly-encoding the determined codebook index, and generating a bit stream using the specific frequency component, the envelope of the other frequency component, and the determined codebook index. The method of decoding a low bit-rate audio signal, includes restoring and dividing a bit stream into a specific frequency component and a frequency component other than the specific frequency component, losslessly-decoding and inversely quantizing the specific frequency component, restoring codebook index information and envelope information about the other frequency component, generating codebooks using the specific frequency component which is inversely quantized, and restoring the other frequency component using the restored codebook index information and the restored envelope information about the other frequency component.
摘要翻译：一种对低比特率音频信号进行编码/解码的方法和装置。编码低比特率音频信号的方法包括对频域中的音频信号的特定频率分量进行量化和无损编码，使用频域中的音频信号生成码本，检测频域中的频率分量的包络除了特定频带单元中的特定频率分量之外的音频信号，并且对检测到的另一个频率分量的包络进行量化和无损编码，从其中编码的音频信号的其他频率分量中选择最相似的码本，生成的码本和确定码本索引（精细结构），对所确定的码本索引进行无损编码，以及使用特定频率分量，另一频率分量的包络和所确定的码本索引生成比特流。对低比特率音频信号进行解码的方法包括将比特流恢复为特定频率分量，除了特定频率分量以外的频率分量，对特定频率分量进行无损解码和逆量化，恢复码本索引信息以及关于另一个频率分量的包络信息，使用反量化的特定频率分量生成码本，以及使用恢复的码本索引信息和关于另一频率分量的恢复包络信息恢复另一频率分量。

37. 发明申请

US20060284748A1 Scalable audio data arithmetic decoding method, medium, and apparatus, and method, medium, and apparatus truncating audio data bitstream 有权
标题翻译：可缩放音频数据算术解码方法，媒体和装置以及截取音频数据比特流的方法，媒体和装置
公开(公告)号：US20060284748A1
公开(公告)日：2006-12-21
申请号：US11330168
申请日：2006-01-12
申请人： Junghoe Kim , Eunmi Oh , Changyong Son , Kihyun Choo
发明人： Junghoe Kim , Eunmi Oh , Changyong Son , Kihyun Choo
IPC分类号： H03M7/34
CPC分类号： G10L19/0017 , G10L19/24 , G10L21/038
摘要： A scalable audio data arithmetic decoding method, medium, and apparatus, and a method, medium, and apparatus truncating an audio data bitstream. The arithmetic decoding method of decoding a scalable arithmetic coded symbol may include arithmetic decoding of a symbol by using the symbol and a probability value for the symbol desired to be decoded, and determining whether or not to continue decoding by checking an ambiguity indicating whether or not decoding of the symbol to be decoded is completed. According to a method, medium, and apparatus of the present invention, data to which scalability is applied when arithmetic coding is performed in MPEG-4 scalable lossless audio coding can be efficiently decoded. Even when a bitstream is truncated, a decoding termination point can be known such that additional decoding of the truncated part can be performed.
摘要翻译：可扩展音频数据算术解码方法，介质和装置，以及截取音频数据比特流的方法，介质和装置。对可缩放算术编码符号进行解码的算术解码方法可以包括通过使用符号和期望解码的符号的概率值对符号进行算术解码，并且通过检查指示是否进行歧义来确定是否继续解码要解码的符号的解码完成。根据本发明的方法，介质和装置，可以有效地解码在MPEG-4可伸缩无损音频编码中执行算术编码时应用可扩展性的数据。即使当比特流被截断时，可以知道解码终止点，使得可以执行对截断部分的附加解码。

38. 发明申请

US20060158356A1 Method and apparatus for encoding and decoding digital signals 有权
标题翻译：用于对数字信号进行编码和解码的方法和装置
公开(公告)号：US20060158356A1
公开(公告)日：2006-07-20
申请号：US11334524
申请日：2006-01-19
申请人： Dohyung Kim , Junghoe Kim , Shlhwa Lee
发明人： Dohyung Kim , Junghoe Kim , Shlhwa Lee
IPC分类号： H03M7/34
CPC分类号： G10L19/008
摘要： Provided are method and apparatus for encoding and decoding multi-channel signals composed of a plurality of channels using a similarity between frequency bands and a similarity between channels. The method of encoding digital signals includes: dividing the multi-channel digital signals into a predetermined number of frequency bands; detecting the most similar band among low-frequency bands less than a predetermined frequency, for each high-frequency band equal to or larger the predetermined frequency among the frequency bands; calculating a feature value from each of the high-frequency bands; performing a first operation using a first channel signal among the multi-channel signals to generate a first signal and performing a second operation using a combination of the first channel signal and a second channel signal among the multi-channel signals to generate a second signal; quantizing a signal that belongs to the low-frequency bands less than the predetermined frequency among the first and second signals and the calculated feature values of the high-frequency bands; and generating bitstreams using information about the detected similar low-frequency band, the quantized low-frequency band signal, and the quantized feature values of the high-frequency bands.
摘要翻译：提供了使用频带之间的相似性和信道之间的相似性来编码和解码由多个信道组成的多信道信号的方法和装置。编码数字信号的方法包括：将多声道数字信号划分成预定数量的频带; 对于等于或大于频带中的预定频率的每个高频带，检测小于预定频率的低频带中最相似的频带; 从每个高频带计算特征值; 在多声道信号中使用第一声道信号执行第一操作以产生第一信号，并且使用多声道信号中的第一声道信号和第二声道信号的组合来执行第二操作以产生第二信号; 量化属于低于第一和第二信号中的预定频率的低频带的信号和所计算的高频带的特征值; 以及使用关于所检测到的类似低频带，量化低频带信号和高频带的量化特征值的信息生成比特流。

39. 发明申请

US20060116886A1 Apparatus and method for processing multi-channel audio signal using space information 有权
标题翻译：使用空间信息处理多声道音频信号的装置和方法
公开(公告)号：US20060116886A1
公开(公告)日：2006-06-01
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： G10L21/04
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。

40. 发明申请

US20050254588A1 Digital signal encoding method and apparatus using plural lookup tables 有权
标题翻译：使用多个查找表的数字信号编码方法和装置
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。

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