A PHYSICALLY-INFORMED, CIRCUIT-BENDABLE, DIGITAL MODEL OF THE ROLAND
TR-808 BASS DRUM CIRCUIT
The TR-808 Cymbal: a Physically-Informed, Circuit-Bendable, Digital Model
having had a fair go at this myself, i compared what i retained and eg. did not match the figures for oscillators, my results were derived by sample analysis.
The six oscillators have nominal frequencies (or ranges)
of 205:3, 369:6, 304:4, 522:7, 359:4–1149:9, and 254:3–
627:2 Hz. Oscillators #5–6 have internal trimpots (TM2
and TM1) in series with their resistor, for factory tuning to
specific frequencies (800 and 540 Hz, respectively).