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15 条记录 (耗时 0.01 秒)

    Digital signal processing device for sound signal processing
    12.
    发明公开
    Digital signal processing device for sound signal processing 失效
    一种用于处理数字声音信号

    公开(公告)号：EP0722162A3

    公开(公告)日：1997-01-15

    申请号：EP96100347.2

    申请日：1996-01-11

    申请人： YAMAHA CORPORATION

    发明人： Nakajima, Yasuyoshi ,  Koyama, Masahiro

    IPC分类号： G10H7/00 ,  G10H1/12

    CPC分类号： G10H7/006 ,  G10H1/125 ,  G10H5/007 ,  G10H7/004 ,  G10H2220/106 ,  G10H2250/161 ,  G10H2250/261 ,  G10H2250/475 ,  G10H2250/481 ,  G10H2250/535 ,  G10H2250/621

    摘要： A plurality of digital signal processors (DSP1-DSP4) are provided in parallel relation to each other, and a series of operations for desired sound signal synthesis or processing is divided into a plurality of operation groups to be allocated to the signal processors. First and second buses (PBUS, DBUS) are connected to each of the signal processors so that parameters necessary for the operations are distributively supplied to the signal processors via the first bus (PBUS) and the operation result of each of the signal processors is transferred to another digital signal processor or an output port via the second bus (DBUS). One digital signal processor receives the output data from another digital signal processor via the second bus so as to perform a predetermined operation using the received data. The desired sound signal processing is thus executed by combinations of the operations performed by such signal processors. Where sound signal processing is executed in a plurality of channels on a time-divisional basis, the time-divisional channel timing of each digital signal processor is set independently of that of other digital signal processors. By setting synchronized tone generation designating data for each channel, synchronized tone generation is controllably performed in selected channels.

    Electrical musical instruments and methods of generating musical tones
    15.
    发明公开
    Electrical musical instruments and methods of generating musical tones 失效
    用于产生乐音的电子乐器和方法。

    公开(公告)号：EP0050917A1

    公开(公告)日：1982-05-05

    申请号：EP81304376.7

    申请日：1981-09-23

    申请人： KIMBALL INTERNATIONAL, INC.

    发明人： Bass, Steven C.

    IPC分类号： G10H7/00

    CPC分类号： G10H7/08 ,  G10H2250/235 ,  G10H2250/265 ,  G10H2250/481 ,  Y10S84/09 ,  Y10S84/10

    摘要： A tone generation system intended primarily for use in electronic musical instruments wherein a digital representation of a harmonically rich waveform is sampled, and a musical tone is produced therefrom. The stored waveform could be the four-term Blackman-Harris window function, which has negligible sidelobes and thus greatly attenuated higher harmonics. The stored function is read out at a fixed rate, but the time periods between successive readings of the waveform are varied to thereby vary the frequency of the output signal. Harmonic content is varied by adjusting the amplitudes of successive waveforms in the waveform train, which has the resultant effect of producing harmonics of selectable amplitudes.