资料来源 : Free On-Line Dictionary of Computing

subband encoding
     
        An audio {compression} technique where the sound is split into
        frequency bands and then parts of the signal which the ear
        cannot detect are removed, e.g. a quiet sound masked by a loud
        one.  The remaining signal is encoded using variable bit-rates
        with more bits per sample being used in the mid frequency
        range.
     
        Subband encoding is used in {MPEG-1}.
     
        (1994-11-02)