公开(公告)号：US4202237A

公开(公告)日：1980-05-13

申请号：US886615

申请日：1978-03-14

申请人： Bjarne C. Hakansson

发明人： Bjarne C. Hakansson

IPC分类号： G10H1/00 ,  G10H1/08 ,  G10H3/12 ,  G10H7/00 ,  G10H5/06 ,  G10H5/10

CPC分类号： G10H1/08 ,  G10H3/125 ,  G10H2210/066 ,  Y10S84/11

摘要： The device of the invention extracts a fundamental frequency from signals coming from a played musical instrument. From this is synthesized a waveform with the same fundamental frequency which can be given an arbitrary form, so that an audical impression of e.g. a violin, a trumpet or a guitar can be given to sound produced by the waveform. The waveform is produced by making a pulse train with frequency n times the fumdamental frequency, leading the pulse train to a counter activating cyclically and sequentially n different outputs. The outputs are summed with different and adjustable weights, and the waveform is determined by adjusting the n weights. The number n can be any number. An embodiment is shown with n=16.

摘要翻译： 本发明的装置从播放的乐器的信号中提取基频。 由此可以合成具有相同基频的波形，该波形可被赋予任意形式，从而可以获得例如声音的声像。 可以给小提琴，小号或吉他给出由波形产生的声音。 通过使频率为傅立叶频率的n倍的脉冲序列产生波形，将脉冲序列引导到计数器周期性地和顺序地激活n个不同的输出。 输出与不同的和可调整的权重相加，波形通过调整n个权重来确定。 数字n可以是任何数字。 显示n = 16的实施例。