The musical tone corrugated signal formation device null which uses the corrugated signal conversion equipment and the same

摘要

PURPOSE:To execute a desired non-linear conversion by a simple circuit constitution by providing feedback line for feeding back an output of a non-linear converting means for bringing a waveform signal to non-linear conversion, to an input side of the converting means, synthesizing an inputted waveform signal and an output of the converting means which is fed back and inputting it to the converting means. CONSTITUTION:An output of a non-linear converting means 43 is fed back to a synthesizing means 41 through a feedback line 21, and the synthesizing means 41 synthesizes an inputted waveform signal and a fed-back signal and outputs it to the converting means 43. Therefore, an input of the converting means 43 is changed in accordance with an output of the converting means 43. That is, an output value of the converting means 43 depends on a variation state extending from the past to the present of the output value of the converting means 43. Accordingly, by utilizing the depending quality, a conversion characteristic to the input waveform signal can be allowed to have a hysteresis. In such a way, a hysteresis characteristic can be given to the non-linear conversion by a simple circuit constitution.