Triangle wave FM. Remember this is NOT band-limited, so controls are set to < 1kHz, upper sidebands above Nyquist are fairly negligable below here. If you need more top use an EQ, don't extend the FM modulation.
Four FM generators are ring modulated together. Each has its own level control. Envelopes are 1/2^n ladder, going from top to bottom components. A short noise burst helps the excitation transient. Look in the [pd presets] subpatch for some example parameters.
A programmer is provided. Set up base frequencies in low to high order first, then choose modulators, then set the modulation index and finally tweak the levels. Mute buttons are next to each level control so you can hear each part in isolation or some combination.
A few I experimented with. You can get some MUCH better gong and cymbal sounds with patience. 4 is okay example of an edge hit. Arrange your hits in order moving from bell outwards towards edge by modifying the partial mix. Gong, hi-hat and and cymbal are all very different, but all seem to follow similar rules for excitation point. To guess ratios see pp 137/8 Dave Bensons "Music a mathematical offering", Chladnis diagrams 2 and 5 of top row seem to be associated with edge and circular patterns with bell (center) excitation.
