TONE CONTROL METHOD OF ELECTRONIC ORGAN

摘要

An electronic organ uses key switches having two fold contactor to control the tone. The contact time difference between two contactors which depends on the strength of the power and pressing speed is divided by 8 stages in the decoder. The corresponding stage is compared with data stored in the microprocessor, and provided to the rythm generator and the D/A converter. The analog signal passed through the D/A converter is provided to the rythm generator to control the tone.