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公开(公告)号：KR1020100032843A
公开(公告)日：2010-03-26
申请号：KR1020090088524
申请日：2009-09-18
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단
IPC: G10L19/18 , G10L19/022 , G10L19/12
CPC classification number: G10L19/0212 , G10L19/173 , G10L19/0204 , G10L19/18
Abstract: PURPOSE: An encoding and decoding device during conversion between a coder based on an MDCT and a heterogeneous coder are provided to integrate an audio coder based on an MDCT with another audio coder to minimize MDCT information when encoding or decoding an audio signal, thereby offsetting generated signal distortion. CONSTITUTION: When conversion between a coder based on an MDCT and a heterogeneous coder occurs, an encoding device(101) codes additional information to restore an input signal encoded according to a coding method based on an MDCT. The encoding device prevents production of an unnecessary bit stream. The encoding device encodes minimum additional information.
Abstract translation: 目的：提供在基于MDCT的编码器和异构编码器之间的转换期间的编码和解码装置，用于将基于MDCT的音频编码器与另一音频编码器集成，以在对音频信号进行编码或解码时最小化MDCT信息，从而抵消产生的 信号失真。 构成：当发生基于MDCT的编码器和异构编码器之间的转换时，编码装置（101）对附加信息进行编码以恢复根据基于MDCT的编码方法编码的输入信号。 编码设备防止不必要的比特流的产生。 编码装置编码最小附加信息。
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公开(公告)号：KR1020100007738A
公开(公告)日：2010-01-22
申请号：KR1020090061607
申请日：2009-07-07
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단
CPC classification number: G10L19/20 , G10L19/0212 , G10L19/12
Abstract: PURPOSE: An apparatus for encoding and decoding integrated voice and audio signals is provided to combine a voice codec module with an audio codec module and selectively apply a codec module depending on a characteristic of an input signal, thereby showing excellent performance. CONSTITUTION: A module selecting unit(110) analyzes a characteristic of an input signal to select the first encoding module for encoding the first frame of an input signal. A voice encoding unit(130) encodes the input signal by selection of the module selecting unit to generate a voice bit string. An audio encoder(140) encodes the input signal by selection of the module selecting unit to generate an audio bit string. A bit stream generator(150) generates an output bit string from the audio encoder by selection of the module selecting unit.
Abstract translation: 目的：提供一种用于编码和解码集成语音和音频信号的装置，用于将语音编解码器模块与音频编解码器模块组合，并且根据输入信号的特性选择性地应用编解码器模块，从而显示出优异的性能。 构成：模块选择单元（110）分析输入信号的特性，以选择用于编码输入信号的第一帧的第一编码模块。 语音编码单元（130）通过选择模块选择单元对输入信号进行编码以产生语音比特串。 音频编码器（140）通过选择模块选择单元对输入信号进行编码以产生音频位串。 比特流生成器（150）通过选择模块选择单元从音频编码器生成输出比特串。
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公开(公告)号：KR100932790B1
公开(公告)日：2009-12-21
申请号：KR1020080036085
申请日：2008-04-18
Applicant: 한국전자통신연구원
IPC: G10L19/008 , G11B20/10 , H03M7/30
Abstract: 본 발명은 음원 간 상호상관을 이용한 멀티트랙 다운믹싱 장치 및 그 방법에 관한 것으로, 개별 음원 신호를 각 음원 간 상호상관을 이용하여 상호상관 값이 높은 조합을 가지는 멀티트랙 신호로 다운믹싱함으로써, 다운믹싱된 멀티트랙 신호로부터 개별 음원을 더욱 충실하게 복원할 수 있는, 음원 간 상호상관을 이용한 멀티트랙 다운믹싱 장치 및 그 방법을 제공하고자 한다.
이를 위하여, 본 발명은 멀티트랙 다운믹싱 장치에 있어서, 개별 음원 신호를 주파수 대역으로 변환하기 위한 신호 변환 수단; 상기 변환된 개별 음원 신호로부터 각 음원 간 공간정보를 산출하기 위한 공간정보 산출 수단; 상기 산출된 각 음원 간 공간정보를 이용하여 상호상관 값에 따라 믹싱조합 정보를 결정하기 위한 믹싱조합 결정 수단; 및 상기 결정된 믹싱조합 정보에 따라 상기 변환된 개별 음원 신호를 멀티트랙 신호로 다운믹싱하기 위한 멀티트랙 다운믹싱 수단을 포함한다.
상호상관, 멀티트랙, 개별 음원 신호, 공간정보, 믹싱조합, 폐루프, 믹싱 매트릭스 정보, 멀티트랙 다운믹싱Abstract translation: 本发明涉及一种使用该声源之间的互相关性的多轨道下混合设备和方法中，通过下混合使用互相关的各个声源信号到多轨道信号具有相应的声音源之间的高互相关值组合，向下 还有一种多声道缩混设备，利用声源之间的相互相关性，能够更真实地从混合多声道信号中恢复单个声源。
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84.发明授权
公开(公告)号：KR100931309B1
公开(公告)日：2009-12-11
申请号：KR1020070067101
申请日：2007-07-04
Applicant: 한국전자통신연구원
IPC: G10L19/008 , H03M7/30
CPC classification number: G10L19/008 , G10L19/02 , G10L19/18
Abstract: Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.
Abstract translation: 提供了一种用于通过根据MPEG环绕解码器中的下混音频信号的种类来控制延迟来控制同步下混信号和MPEG环绕旁侧信息信号的方法。 当使用HE-AAC解码器和低功率MPEG环绕解码器恢复多声道音频信号并且将从HE-AAC解码器输出的复杂QMF信号用作下混信号时，延迟单元补偿在实际 到复数转换器。 当使用时域下混合信号时，另一延迟单元延迟空间参数以补偿在QMF和奈奎斯特组中引起的延迟。 而且，当使用HE-AAC解码器和高质量MPEG环绕解码器来恢复多声道音频信号并且从HE-AAC解码器输出的复数QMF信号被用作下混音信号时，延迟单元补偿 一个真正的复杂转换器。
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公开(公告)号：KR100927733B1
公开(公告)日：2009-11-18
申请号：KR1020070036089
申请日：2007-04-12
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단 , 세종대학교산학협력단
Inventor： 김대연 , 임성창 , 서정일 , 백승권 , 장인선 , 장대영 , 김재곤 , 문경애 , 홍진우 , 김진웅 , 오승준 , 안창범 , 정세윤 , 최해철 , 이영렬 , 심동규
IPC: H04N19/12 , H04N19/625
CPC classification number: H04N19/103 , H04N19/122 , H04N19/147 , H04N19/176 , H04N19/46 , H04N19/61
Abstract: Provided is an apparatus and method for encoding and decoding using alternative transform units according to the correlation of residual signals. The video encoding apparatus includes a first transforming unit for performing discrete cosine transform (DCT), first quantization, first inverse quantization, and inverse DCT on a block basis onto residual coefficients generated after intra frame prediction or inter frame prediction; a second transforming unit for performing discrete sine transform (DST), second quantization, second inverse quantization, and inverse DST on a block basis onto the residual coefficients; a selecting unit for selecting one having a high compression rate between the first and second transforming units for each block through performing rate-distortion optimization; and a flag marking unit for recording information about the selected transforming unit at a flag bit provided on a macroblock basis.
Abstract translation: 提供了一种根据残差信号的相关性使用替代变换单元进行编码和解码的设备和方法。 该视频编码设备包括：第一变换单元，用于基于块执行离散余弦变换（DCT），第一量化，第一逆量化和逆DCT到在帧内预测或帧间预测之后生成的残差系数; 第二变换单元，用于以块为单位对残差系数执行离散正弦变换（DST），第二量化，第二逆量化和逆DST; 选择单元，用于通过执行速率失真优化来针对每个块在第一变换单元和第二变换单元之间选择具有高压缩率的压缩率; 以及标记标记单元，用于在以宏块为基础提供的标记位处记录关于所选择的变换单元的信息。
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Patent Agency Ranking
公开(公告)号：KR100903110B1
公开(公告)日：2009-06-16
申请号：KR1020070036585
申请日：2007-04-13
Applicant: 한국전자통신연구원 , 한양대학교 산학협력단 , 광운대학교 산학협력단 , 연세대학교 산학협력단
Abstract: 본 발명은 트렐리스 부호 양자화 알고리듬을 이용한 광대역 음성 부호화기용 LSF 계수 양자화 장치 및 방법에 관한 것으로, LSF 계수 벡터를 양자화하여 양자화 대상 후보 벡터를 산출하고, 상기 후보 벡터를 상기 LSF 계수 벡터의 예측된 LSF 벡터를 참조하여 트렐리스 부호 양자화(TCQ)하여 상기 LSF 계수 벡터의 예측 양자화 최종 벡터를 산출하는 예측 구조 양자화부, 상기 LSF 계수 벡터를 양자화하여 양자화 대상 후보 벡터를 산출하고, 상기 후보 벡터를 트렐리스 부호 양자화(TCQ)하여 상기 LSF 계수 벡터의 비예측 양자화 최종 벡터를 산출하는 비예측 구조 양자화부 및 상기 예측 양자화 최종 벡터와 비예측 양자화 최종 벡터 중 상기 LSF 계수 벡터와의 차가 작은 것을 상기 LSF 계수 벡터의 최종 양자화 벡터로 결정하는 스위칭부로 구성되어, 안전한 양자화와 에러 전달 현상을 줄여 할당되는 비트와 SD 성능를 개선시킬 수 있는 효율적인 LSF 양자화기를 제공한다.
양자화기, BCTCQ 알고리즘, 예측 벡터, 비예측 벡터-
公开(公告)号：KR1020090040857A
公开(公告)日：2009-04-27
申请号：KR1020080103034
申请日：2008-10-21
Applicant: 한국전자통신연구원
IPC: G10L19/20 , G10L19/008 , H04N21/233 , H04S5/00
CPC classification number: G10L19/008
Abstract: A method for encoding/decoding a multi-object and an apparatus therefor are provided to offer various audio services to a user, efficiently. The first down-mix generating unit(102) down-mixes a background object(BGO) and the first foreground object(FGO1) to generate the first down-mix signal and the first residual signal. The second down-mix generating unit(103) down-mixes the first down-mix signal and the second foreground object(FGO2) to generate the second down-mix signal and the second residual signal. A bit stream generating unit produces a bit stream including the down-mix signal and residual signal.
Abstract translation: 提供了一种用于对多个对象进行编码/解码的方法及其装置，以有效地向用户提供各种音频服务。 第一下混合生成单元（102）将背景物体（BGO）和第一前景物体（FGO1）进行降混，以产生第一缩减混音信号和第一残差信号。 第二下混合生成单元（103）将第一缩混信号和第二前景对象（FGO2）进行下混合，以生成第二缩减混音信号和第二残差信号。 比特流生成单元产生包括缩减混音信号和残留信号的比特流。
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88.发明授权
公开(公告)号：KR100882949B1
公开(公告)日：2009-02-10
申请号：KR1020070008247
申请日：2007-01-26
Applicant: 한국전자통신연구원 , 세종대학교산학협력단 , 광운대학교 산학협력단
Inventor： 정세윤 , 최해철 , 서정일 , 백승권 , 장인선 , 김재곤 , 문경애 , 장대영 , 홍진우 , 김진웅 , 이영렬 , 심동규 , 오승준 , 안창범 , 김대연 , 김동균
IPC: H04N19/129 , H04N19/13
CPC classification number: H04N19/159 , H04N19/103 , H04N19/11 , H04N19/129 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/61 , H04N19/91
Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
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公开(公告)号：KR1020080102027A
公开(公告)日：2008-11-24
申请号：KR1020070048302
申请日：2007-05-17
Applicant: 한국전자통신연구원 , 한양대학교 산학협력단 , 광운대학교 산학협력단 , 연세대학교 산학협력단
CPC classification number: H03M7/40 , G10L19/0017
Abstract: A lossless coding/decoding apparatus and method of audio signal are provided to improve the performance of an audio encoder by compressing audio signal into a bit string having a less bit number at the same coding distortion. A lossless encoding apparatus comprises a second encoder module(210) including a first encoder(230) directly encoding a first symbol and a plurality of second encoders(220) converting the first symbol into a second symbol and encoding the second symbol; a first selector(250) comparing the performance of the second encoders and the first encoder and outputting an encoding mode according to the comparison result; and a second selector(260) encoding the first symbol corresponding to the encoding mode and outputting the final bit string.
Abstract translation: 提供音频信号的无损编码/解码装置和方法，以通过将音频信号压缩成具有相同编码失真的位数较少的位串来提高音频编码器的性能。 无损编码装置包括第二编码器模块（210），其包括直接编码第一符号的第一编码器（230）和将第一符号转换为第二符号并对第二符号进行编码的多个第二编码器（220） 比较第二编码器和第一编码器的性能并根据比较结果输出编码模式的第一选择器（250） 以及编码对应于编码模式的第一符号并输出最终位串的第二选择器（260）。
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公开(公告)号：KR1020080089308A
公开(公告)日：2008-10-06
申请号：KR1020080029695
申请日：2008-03-31
Applicant: 한국전자통신연구원
IPC: G10L19/008 , G10L19/20
CPC classification number: G10L19/008
Abstract: An apparatus and a method for encoding and decoding multi-object audio signal including multiple channels are provided to actively consume audio contents according to the need of a user. An SAOC(Spatial Audio Object Coding) encoder(101) downmixes an audio object outputted from an SAC encoder(103) to output a representative downmix signal, and outputs an SAOC bit stream including space queue information and supplementary information about the inputted audio object. The SAC encoder downmixes a multi-channel audio signal into a mono channel or a stereo channel to generate a single audio object. The SAC encoder outputs an SAC bit stream including space queue information and supplementary information about the inputted multi-channel audio signal. A preset-ASI(Audio Scene Information) unit(113) forms a control signal inputted from the exterior, namely, object control information, into preset-ASI and generates a preset-ASI bit stream including the preset-ASI information. A bit stream formatter(105) generates a representative bit stream by combining the SAOC bit stream outputted from the SAOC encoder, the SAC bit stream outputted from the SAC encoder, and a preset-ASI bit stream outputted from the preset-ASI unit.
Abstract translation: 提供了一种用于编码和解码包括多个通道的多对象音频信号的装置和方法，以根据用户的需要主动消费音频内容。 SAOC（空间音频对象编码）编码器（101）将从SAC编码器（103）输出的音频对象下混合以输出代表性的下混合信号，并输出包括空格队列信息和关于所输入的音频对象的补充信息的SAOC比特流。 SAC编码器将多声道音频信号下混合到单声道或立体声通道中以生成单个音频对象。 SAC编码器输出包括空间队列信息和关于输入的多声道音频信号的补充信息的SAC比特流。 预设ASI（音频场景信息）单元（113）形成从外部输入的控制信号，即对象控制信息，成为预设的ASI，并生成包含预设的ASI信息的预设的ASI比特流。 比特流格式化器（105）通过组合从SAOC编码器输出的SAOC比特流，从SAC编码器输出的SAC比特流和从预设ASI单元输出的预设ASI比特流，生成代表比特流。
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