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11. 发明申请

US20070106502A1 ADAPTIVE TIME/FREQUENCY-BASED AUDIO ENCODING AND DECODING APPARATUSES AND METHODS 有权
标题翻译：自适应时间/频率的音频编码和解码设备和方法
公开(公告)号：US20070106502A1
公开(公告)日：2007-05-10
申请号：US11535164
申请日：2006-09-26
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： G10L11/04
CPC分类号： G10L19/12 , G10L19/02 , G10L19/20
摘要： Adaptive time/frequency-based audio encoding and decoding apparatuses and methods. The encoding apparatus includes a transformation & mode determination unit to divide an input audio signal into a plurality of frequency-domain signals and to select a time-based encoding mode or a frequency-based encoding mode for each respective frequency-domain signal, an encoding unit to encode each frequency-domain signal in the respective encoding mode, and a bitstream output unit to output encoded data, division information, and encoding mode information for each respective frequency-domain signal. In the apparatuses and methods, acoustic characteristics and a voicing model are simultaneously applied to a frame, which is an audio compression processing unit. As a result, a compression method effective for both music and voice can be produced, and the compression method can be used for mobile terminals that require audio compression at a low bit rate.
摘要翻译：自适应时间/频率音频编码和解码装置和方法。编码装置包括：变换和模式确定单元，用于将输入音频信号分成多个频域信号，并且为每个相应的频域信号选择基于时间的编码模式或基于频率的编码模式，编码单元，用于对各个编码模式中的每个频域信号进行编码，以及比特流输出单元，用于输出每个各个频域信号的编码数据，分割信息和编码模式信息。在装置和方法中，声音特性和语音模型被同时应用于作为音频压缩处理单元的帧。结果，可以产生对音乐和语音有效的压缩方法，并且压缩方法可以用于需要低比特率的音频压缩的移动终端。

12. 发明申请

US20060136198A1 Method and apparatus for low bit rate encoding and decoding 有权
标题翻译：用于低比特率编码和解码的方法和装置
公开(公告)号：US20060136198A1
公开(公告)日：2006-06-22
申请号：US11312457
申请日：2005-12-21
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： G10L11/04
CPC分类号： G10L19/028 , G10L19/0017 , G10L19/02
摘要： An apparatus and method of low bit rate encoding and reproducing. The method includes transforming input audio signals in a time domain into spectral signals in a frequency domain, extracting important-spectrum components from the spectral signals in the frequency domain, and quantizing the important-spectrum components, extracting residual-spectrum components other than the important-spectrum components from the spectral signals in the frequency domain, and calculating and quantizing a noise level of the residual-spectrum components, and encoding the quantized important-spectrum components and the quantized noise level losslessly, and outputting encoded bitstreams.
摘要翻译：低比特率编码和再现的装置和方法。该方法包括将时域中的输入音频信号变换为频域的频谱信号，从频域的频谱信号中提取重要的频谱分量，并量化重要的频谱分量，提取重要频谱成分以外的残余频谱分量频域中的频谱信号的频谱分量，以及计算和量化残余频谱分量的噪声电平，以及对量化的重要频谱分量和量化噪声电平进行无损编码，并输出编码比特流。

13. 发明授权

US09094662B2 Encoder and decoder to encode signal into a scalable codec and to decode scalable codec, and encoding and decoding methods of encoding signal into scalable codec and decoding the scalable codec 有权
标题翻译：编码器和解码器将信号编码成可扩展编解码器并解码可扩展编解码器，并将编码信号的编码和解码方法转换为可扩展编解码器并对可扩展编解码器进行解码
公开(公告)号：US09094662B2
公开(公告)日：2015-07-28
申请号：US11709254
申请日：2007-02-22
申请人： Hosang Sung , Eunmi Oh , Junghoe Kim , Kangeun Lee
发明人： Hosang Sung , Eunmi Oh , Junghoe Kim , Kangeun Lee
IPC分类号： G10L19/02 , H04N19/164 , G10L19/24 , H04N21/2343 , H04N21/24 , H04N21/2662 , H04N21/6437 , H04N19/30 , H04N19/115 , H04N19/187
CPC分类号： G10L19/12 , G10L19/24 , H04N19/115 , H04N19/164 , H04N19/187 , H04N19/30 , H04N21/234327 , H04N21/2402 , H04N21/2662 , H04N21/6437
摘要： An encoder and decoder to encode one or more input signals into a scalable codec and to decode the scalable codec, and encoding and decoding methods using a bitstream with a layered structure in the scalable codec change a top coding bit rate to encode the input signals according to a network status, and the bitstream is decoded by analyzing the top coding bit rate included in the bitstream.
摘要翻译：编码器和解码器将一个或多个输入信号编码成可扩展编解码器并对可伸缩编解码器进行解码，以及使用具有可分级编解码器中的分层结构的比特流进行编码和解码方法，改变顶编码比特率以对输入信号进行编码通过分析比特流中包括的顶部编码比特率来解码比特流。

14. 发明授权

US08620011B2 Method, medium, and system synthesizing a stereo signal 有权
标题翻译：方法，媒体和系统合成立体声信号
公开(公告)号：US08620011B2
公开(公告)日：2013-12-31
申请号：US11707990
申请日：2007-02-20
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： H04R5/02
CPC分类号： H04R5/02 , G10L19/008 , H04R5/033 , H04S1/002 , H04S3/00 , H04S3/002 , H04S3/02 , H04S2420/01 , H04S2420/07
摘要： A method, medium, and system generating a 3-dimensional (3D) stereo signal in a decoder by using a surround data stream. According to such a method, medium, and system, a head related transfer function (HRTF) is applied in a quadrature mirror filter (QMF) domain, thereby generating a 3D stereo signal by using a surround data stream.
摘要翻译：一种通过使用环绕数据流在解码器中产生三维（3D）立体声信号的方法，介质和系统。根据这种方法，将介质和系统的头部相关传递函数（HRTF）应用于正交镜像滤波器（QMF）域中，从而通过使用环绕数据流生成3D立体声信号。

15. 发明授权

US08615391B2 Method and apparatus to extract important spectral component from audio signal and low bit-rate audio signal coding and/or decoding method and apparatus using the same 失效
标题翻译：从音频信号和低比特率音频信号编码和/或解码方法和装置中提取重要频谱分量的方法和装置
公开(公告)号：US08615391B2
公开(公告)日：2013-12-24
申请号：US11480897
申请日：2006-07-06
申请人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
发明人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/0212
摘要： An method and apparatus to extract an audio signal having an important spectral component (ISC) and a low bit-rate audio signal coding/decoding method using the method and apparatus to extract the ISC. The method of extracting the ISC includes calculating perceptual importance including an SMR (signal-to-mask ratio) value of transformed spectral audio signals by using a psychoacoustic model, selecting spectral signals having a masking threshold value smaller than that of the spectral audio signals using the SMR value as first ISCs, and extracting a spectral peak from the audio signals selected as the ISCs according to a predetermined weighting factor to select second ISCs. Accordingly, the perceptual important spectral components can be efficiently coded so as to obtain high sound quality at a low bit-rate. In addition, it is possible to extract the perceptual important spectral component by using the psychoacoustic model, to perform coding without phase information, and to efficiently represent a spectral signal at a low bit-rate. In addition, the methods and apparatus can be employed in all the applications requiring a low bit-rate audio coding scheme and in a next generation audio scheme.
摘要翻译：一种提取具有重要频谱分量（ISC）的音频信号和使用该方法和装置提取ISC的低比特率音频信号编码/解码方法的方法和装置。提取ISC的方法包括通过使用心理声学模型来计算感知重要性，包括变换的频谱音频信号的SMR（信号到掩模比）值，选择具有比频谱音频信号的屏蔽阈值小的光谱信号，该频谱信号使用 SMR值作为第一ISC，并且根据预定加权因子从被选择为ISC的音频信号中提取频谱峰值以选择第二ISC。因此，感知重要的频谱分量可以被有效地编码，以便以低比特率获得高音质。此外，可以通过使用心理声学模型来提取感知重要的频谱分量，以执行没有相位信息的编码，并且以低比特率有效地表示频谱信号。此外，该方法和装置可以用于需要低比特率音频编码方案和下一代音频方案的所有应用中。

16. 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。

17. 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。

18. 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。

19. 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。

20. 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。

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