basic fm

[felixroos]

adds basic fm synthesis to the synth:

strudel-fm.mov

(in the video, fm = fmh, and fmi = fm ... i flipped this because it is probably more common to change the modulation index)

note("c a f e")
.fm(4) // set modulation index to 4

note("c a f e")
.fm(4)  // set modulation index to 4
.fmh(.5)  // set harmonicity to .5

fm is short for fmi, so you can also do

note("c a f e")
.fmi(4)  // set modulation index to 4
.fmh(.5)  // set harmonicity to .5

array notation is also supported:

note("c a f e").fm("4:2")