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    Method and apparatus for compressing and generating waveform
    2.
    发明公开
    Method and apparatus for compressing and generating waveform 有权
    Verfahren und Vorrichtung zur Wellenformkomprimierung und Erzeugung

    公开(公告)号：EP1039442A2

    公开(公告)日：2000-09-27

    申请号：EP00106126.6

    申请日：2000-03-21

    申请人： YAMAHA CORPORATION

    发明人： Suzuki, Hideo, c/o Yamaha Corporation ,  Sakama, Masao, c/o Yamaha Corporation

    IPC分类号： G10H7/10

    CPC分类号： G10H7/105 ,  G10H2250/035 ,  G10H2250/235

    摘要： Input waveform data are processed by FFT to separate a harmonic wave component from the waveform data while a non-harmonic wave component is separated by subtracting the harmonic wave component from the waveform data. Vector quantization is performed on the harmonic wave component by selecting and using one of prestored harmonic vectors as a representative vector for the harmonic wave component, and vector quantization is performed on the non-harmonic wave component, independently of the harmonic wave component, by selecting and using one of prestored non-harmonic vectors as a representative vector for the non-harmonic wave component. Then, using harmonic and non-harmonic vectors indicated by vector information of a waveform to be reproduced, waveforms of harmonic and non-harmonic wave components are generated separately and then combined to thereby reproduce/generate the waveform.

    摘要翻译： 通过FFT处理输入波形数据，从谐波分量与波形数据分离，通过从波形数据中减去谐波分量来分离非谐波分量。 通过选择和使用预先存储的谐波矢量中的一个作为谐波分量的代表矢量对谐波分量进行矢量量化，并且通过选择独立于谐波分量的非谐波分量进行矢量量化 并使用预先存储的非谐波矢量之一作为非谐波分量的代表矢量。 然后，使用由要再现的波形的矢量信息指示的谐波和非谐波矢量，分别产生谐波和非谐波分量的波形，然后组合，从而再现/生成波形。