트렐리스 부호 양자화 알고리듬을 이용한 광대역 음성 부호화기용 LSF 계수 양자화 장치 및 방법
    43.
    发明公开
    트렐리스 부호 양자화 알고리듬을 이용한 광대역 음성 부호화기용 LSF 계수 양자화 장치 및 방법 失效
    使用TRELLIS编码量化算法的宽带语音编码器LSF系数的量子和方法

    公开(公告)号:KR1020080092770A

    公开(公告)日:2008-10-16

    申请号:KR1020070036585

    申请日:2007-04-13

    Abstract: A quantizer and method of an LSF coefficient in a wide-band speech coder using trellis coded quantization algorithm are provided to improve an SD performance and assigned bits by reducing an error transfer as a result of using in parallel both a predictional structure and a non-predictional structure. A quantizer of an LSF coefficient in a wide-band speech coder includes a predictional structure quantizing portion(200), a non-predictional structure quantizing portion(210), and a switching portion(220). The predictional structure quantizing portion calculates a quantized candidate vector by quantizing an LSF coefficient vector, and a predictional quantization final vector of the LSF coefficient vector by trellis coded quantizing the candidate vector with reference to a predicted LSF vector of the LSF coefficient vector. The non-predictional structure quantizing portion calculates a quantized candidate vector by quantizing the LSF coefficient vector, and a non-predictional quantization final vector of the LSF coefficient vector by trellis coded quantizing the candidate vector. The switching portion selects smaller one of differences between the LSF coefficient vector and the predictional and non-predictional quantization final vectors as the final quantization vector of the LSF coefficient vector.

    Abstract translation: 提供了使用网格编码量化算法的宽带语音编码器中的LSF系数的量化器和方法,以通过减少作为预测结构和非均匀结构的并行结果的误差传递来改善SD性能和分配比特, 预测结构。 宽带语音编码器中的LSF系数的量化器包括预测结构量化部分(200),非预测结构量化部分(210)和切换部分(220)。 预测结构量化部分通过对参考LSF系数向量的预测LSF向量的量化该候选向量的网格编码来量化LSF系数向量和LSF系数向量的预测量化最终向量来计算量化候选向量。 非预测结构量化部分通过量化该LSF系数向量来计算量化的候选向量,以及通过网格编码量化该候选向量的LSF系数向量的非预测量化最终向量。 切换部分选择LSF系数向量与预测和非预测量化最终向量之间的较小差异作为LSF系数向量的最终量化向量。

    오디오 신호의 무손실 부호화/복호화 장치 및 그 방법
    44.
    发明公开
    오디오 신호의 무손실 부호화/복호화 장치 및 그 방법 失效
    无线编码/解码设备和方法

    公开(公告)号:KR1020080055578A

    公开(公告)日:2008-06-19

    申请号:KR1020070028883

    申请日:2007-03-23

    CPC classification number: G10L19/0017 G10L19/002

    Abstract: A lossless encoding/decoding apparatus and a method thereof are provided to execute compression on audio signals through bitstreams having small numbers by enhancing the capability of lossless encoding of frequency coefficients. A lossless encoding apparatus includes a bit converter(422), a run length converter(424), and a run length encoder(430). The bit converter generates first bitstreams on respective levels from quantization indexes on frequency coefficients of a current frame. The run length converter generates symbols which are formed by a run length of second bitstreams where the first bit streams are disposed in one row. The run length encoder encodes the symbols to third bitstreams.

    Abstract translation: 提供了一种无损编码/解码装置及其方法,通过提高频率系数的无损编码能力,通过具有小数的比特流对音频信号执行压缩。 无损编码装置包括位转换器(422),行程长度转换器(424)和行程编码器(430)。 比特转换器从当前帧的频率系数上的量化索引在相应电平上产生第一比特流。 游程长度转换器产生由第一比特流的行长度形成的符号,其中第一比特流被布置在一行中。 游程长度编码器将符号编码到第三比特流。

    음성/음악 통합 신호의 부호화/복호화 장치
    48.
    发明授权
    음성/음악 통합 신호의 부호화/복호화 장치 有权
    编码和解码整合语音和音乐的装置

    公开(公告)号:KR101565634B1

    公开(公告)日:2015-11-04

    申请号:KR1020120076635

    申请日:2012-07-13

    Abstract: 음성/음악통합신호의부호화/복호화장치가개시된다. 음성/음악통합신호의부호화장치는, 입력신호의특성을분석하는입력신호분석부, 상기입력신호가스트레오신호인경우모노신호로다운믹스하고, 스테레오음상정보를추출하는스테레오부호화부, 상기입력신호를고주파대역신호로확장하는주파수대역확장부, 상기주파수대역확장부의출력신호에대한샘플링율을변환하는샘플링율변환부, 상기입력신호가음성특성을가지는신호인경우, 음성부호화모듈을사용하여상기입력신호를부호화하는음성신호부호화부, 상기입력신호가음악특성을가지는신호인경우, 음악부호화모듈을사용하여상기입력신호를부호화하는음악신호부호화부및 상기음성신호부호화부의출력신호및 상기음악신호부호화부의출력신호를이용하여비트스트림을생성하는비트스트림생성부를포함한다.

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