Digital signal decoding apparatus
    31.
    发明授权
    Digital signal decoding apparatus 失效
    数字信号解码装置

    公开(公告)号:US5461378A

    公开(公告)日:1995-10-24

    申请号:US118456

    申请日:1993-09-08

    IPC分类号: H03M7/30 H04B1/66

    CPC分类号: H04B1/665

    摘要: There is provided a decoding apparatus adapted for decoding a coded signal from a coding apparatus adapted to divide an input, digital signal into signals in frequency bands by using at least one filter to divide respective filter outputs into blocks every plural words to carry out a first block floating processing every respective blocks to further implement an orthogonal transform processing to the signal which has been subjected to the first block floating processing to thereby conduct frequency analysis thereafter to divide the orthogonally transformed output into blocks every plural words to carry out a second block floating processing every respective blocks, wherein after the second block floating is released by using a predetermined number of inverse floating circuits, the coded signal is restored to a signal on the time base by inverse orthogonal transform processing at a predetermined number of IMDCT circuits, and the first block floating is released in the process of the inverse orthogonal transform operation.

    摘要翻译: 提供了一种解码装置,用于对来自编码装置的编码信号进行解码,该编码装置适于通过使用至少一个滤波器将输入的数字信号划分成频带的信号,以将每个滤波器的输出分成多个字来进行第一 对每个块进行块浮动处理,以进一步对已经经过第一块浮动处理的信号执行正交变换处理,从而进行频率分析,然后将正交变换的输出划分为每个多个字块,以执行第二块浮置 处理每个各个块,其中在通过使用预定数量的反向浮动电路来释放第二块浮动之后,通过在预定数量的IMDCT电路上的逆正交变换处理将编码信号恢复为基于时基的信号,并且 第一块浮动在inv的过程中释放 正交变换运算。