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公开(公告)号：KR1020100041678A
公开(公告)日：2010-04-22
申请号：KR1020090096888
申请日：2009-10-12
Applicant: 한국전자통신연구원
CPC classification number: G10L19/087 , G10L19/125 , G10L19/22 , G10L19/26
Abstract: PURPOSE: An encoding and decoding apparatus for a linear predictive coder residual signal of a modified discrete cosine transform based an unified speech and an audio coding are provided to perform encoding/decoding by expressing a residual signal as a complex signal. CONSTITUTION: A signal analyzing unit(110) selects a coding method of a signal filtered LPC. A first encoding unit(120) encodes a residual signal of LPC based on real filter bank according to the selection of the signal analyzing unit. A second encoding unit encodes a residual signal of LPC based on complex filter bank according to the selection of the signal analyzing unit. A third encoding unit encodes a residual signal of LPC based on ACELP(Algebraic Code Excited Linear Prediction) according to the selection of the signal analyzing unit.
Abstract translation: 目的：提供一种用于基于统一语音和音频编码的修正离散余弦变换的线性预测编码器残差信号的编码和解码装置，以通过将残差信号表示为复信号来执行编码/解码。 构成：信号分析单元（110）选择滤波后的LPC信号的编码方法。 第一编码单元（120）根据信号分析单元的选择，根据实数滤波器组对LPC的残留信号进行编码。 第二编码单元根据信号分析单元的选择，根据复数滤波器组对LPC的残差信号进行编码。 第三编码单元根据信号分析单元的选择，基于ACELP（代数码激励线性预测）对LPC的残留信号进行编码。
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公开(公告)号：KR100942143B1
公开(公告)日：2010-02-16
申请号：KR1020070131258
申请日：2007-12-14
Applicant: 한국전자통신연구원
Abstract: 본 발명에 따른 기존 오디오 포맷의 오디오 장면 정보를 유지하는 WFS 재생 방법 및 그 장치는, WFS 재생을 위해 별도로 마련된 오디오 객체들이 존재하지 않는, 현존하는 오디오 포맷을 입력 신호로 받아 각 음원 객체와 그 객체의 공간 상 음상 정위 정보를 제공해줌으로써 WFS 렌더링을 가능하게 하는 방법에 관한 것이다.
즉, 처음부터 WFS 재생을 위해 음원 객체를 독립적으로 보유하고 있는 상황이라면 문제가 없지만, WFS 재생 시스템의 하위 호환성을 고려한다면 스테레오나 5.1채널 오디오 포맷을 입력 받아도 WFS로 재생해줄 수 있어야 하므로 스테레오나 5.1채널 오디오 신호에 음원 분리 기법을 적용하여 채널별 신호에 포함되어 있는 각각의 음원 객체를 추출해낸 후, 이를 채널 별로 짝을 지어 파워 패닝 기법을 활용하여 WFS 렌더링(Rendering) 시 발생하는 원래 음장의 왜곡 현상을 해결하고자 하는 것이다.
WFS(Wave Field Synthesis), 음장 합성, BSS(Blind Source Extraction)-
203.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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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-
Patent Agency Ranking
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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207.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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公开(公告)号：KR1020080029940A
公开(公告)日：2008-04-03
申请号：KR1020070098663
申请日：2007-10-01
Applicant: 한국전자통신연구원
IPC: G10L19/008 , G10L19/20 , H04N21/233
CPC classification number: G10L19/00 , G10L19/008 , G10L19/20
Abstract: An apparatus and a method for encoding and decoding multi-object audio signals with various channels are provided to allow a user to use audio contents actively as necessary. The first and second downmixers(101,103) downmix multi-object audio signals each with different channels into a single downmixed signal, and extract supplementary information including header information and space queue information with respect to the multi-object audio signals each having different channels. An audio encoder(105) encodes the downmixed audio signals. A supplementary information encoder(107) generates the supplementary information as a bit stream. The header information includes identifier information of the multi-object audio signals each with different channels and channel information of the multi-object audio signals each with different channels and channel information.
Abstract translation: 提供用于对具有各种通道的多对象音频信号进行编码和解码的装置和方法，以允许用户根据需要主动地使用音频内容。 第一和第二下混合器（101,103）将具有不同通道的多对象音频信号混合成单个下混合信号，并且提取关于每个具有不同频道的多对象音频信号的标题信息和空间队列信息的补充信息。 音频编码器（105）对下混合音频信号进行编码。 辅助信息编码器（107）生成补充信息作为比特流。 标题信息包括每个具有不同信道的多对象音频信号的标识符信息和多对象音频信号的信道信息，每个具有不同的信道和信道信息。
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