| 84 / | HD | MUSIC |
| 1 | DF | INSTRUMENTS {9} |
| 600 | DF | .~ Electrical musical tone generation {5} |
| 601 | DF | .~.~ Data storage {6} |
| 602 | DF | .~.~.~ Digital memory circuit (e.g., RAM, ROM, etc.) {9} |
| 604 | ![]() | .~.~.~.~ Waveform memory {3} |
| 605 | DF | .~.~.~.~.~> Read out at different rates |
| 606 | DF | .~.~.~.~.~> Read out at fixed rate |
| 607 | DF | .~.~.~.~.~> Recursive algorithm |