My first attempt at "homebrew" modal synthesis, with limited results.
White noise is sent through an adsr to create
a short noise burst. The output is fed into four biquad filters
configured with values taken from the STK marimba preset (defined in the ModalBar
class). These are then added together and multiplied
300% to increase the output amplitude. It almost sounds like a noisy,
gritty marimba. Sort of.
myHiss noise
; name (op) input attack decay sustain release
myBurst adsr myHiss .001 .25 0 0
; - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; BiQuad values taken from Stk marimba preset
; - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# biquad input B0 B1 B2 A1 A2 freq rad norm gain
bq1 biquad myBurst .99 .99 .99 .99 .99 261 .9996 1 4
bq2 biquad myBurst .99 .99 .99 .99 .99 1041.39 .9994 1 1
bq3 biquad myBurst .99 .99 .99 .99 .99 2779.65 .9994 1 1
bq4 biquad myBurst .99 .99 .99 .99 .99 637623 .999 1 .8
myAdd add bq1 bq2 bq3 bq4 stop
gainScale mult myAdd 3