Multi Melody Generator With Instrumental Effect
This melody generator can generate various English and Hindi tunes as also instrumental effects. Various modes of melodies can be selected through DIP switches. Other advantages are high volume and volume control. IC UM3481A is a 16-pin multi-instrument melody generator. It is a mask-ROM-programmed IC designed to play the melody according to the programmed data. Its inbuilt preamplifier provides a simple interface to the driver circuit. The IC can be replaced with other UM348XXX series, WR630173 or WE4822 melody generator ICs. A WR630173 preprogrammed as Hindi melody generator can be used here. There are 16 tunes stored in WR630173 including mera joota hai japani, mera naam chin chin chu, hare rama hare krishna, raghu pati raghav raja ram and ramaiya vasta vaiya. The circuit is powered by a 3V battery. Switch S2 is the main input-select switch for producing different tones in the loudspeaker. Various modes of operation are selected through DIP switches S3, S4 and S5 connected to ...