Electronic clock with a chime system

摘要

An electronic clock with a chime system has exclusively electronic processing for production of a variety of tone signal sequences consisting of known melodies or portions thereof and time-identifying sequences of strokes. The characteristic values of these tone signal sequences are loaded into a ROM memory and can be recalled, as required, by electronic control and release circuits at each quarter, half, three quarter or full hour. The amplitude of the audio output signals is automatically controlled in accordance with the time of day.