I had a mess about with modelling drums using delay based laminas with feedback and fm to make non linarity. I was inspired by some Eduardo Miranda and Perry Cook work. It's pretty rough, and basically it doesn't really work so well because I found the scalings hard to set up, getting the parameters is fiddly. All the same I thought it worth posting because someone might want to play with it improve it. Changing to lower blocksizes might give a smoother sound for the snare , the controls could be scaled better and the kickdrum needs a phase reset and envelope zero to stop occasional clicks. And plenty more could be done with note velocity parameters.
Anyway there's a snare drum that has a separate snare and skin and two exitor sources, a displacement impulse and a rattle from the snare coil. Theres a kick drum that has a beater and skin. For both you can set the pitch (tightness), and diameter, but I left all 3 delay parameters accessible to mess with. Snare skin model has self-feedback. The kick drum there is FM with self feebcak which gives the effect of a loose skin which tightens with the displacement impulse if you get the settings just right. Finally there is an FM hi-hat, which is a bit shit but I am still scratching my head over how to build a model of two cymbals that can rattle against one another, some way to express a symmetrical coupling. Attached is the kit to listen to. And there's a few new sound effects generators here too http://www.obiwannabe.co.uk/html/news/news.html The machine-o-matic (with deluxe quadruple action) is a good laugh if you like making weird machine sounds.
best,
Andy
the motor one is really cool. especially with the different presets. ..changing the preset button rapidly is the coolest 'musical' effect i reckon.
i think the toggles should trigger a line object to gradually stop the motors spinning. because motors never just stop suddenly.