;MIDIFile playback instrument designed in class on 10-15-2002 RP
;Perf with csound -gWo midibach.wav -F bachinv.mid midibach.orc stupid.sco 

sr	=	44100
kr	=	4410
ksmps	=	10
nchnls	=	1

gisine	ftgen	1,0,8192,10,1	;Sine wave table for foscil

	instr 1
ifn	=	1	;sine
index	=	4	;brassy
icar	=	1	;all harmonics
imod	=	1
ivibwth	=	.1	;max vib width
ilfohz	=	100	;max vib rate
icps	cpsmidi		;cvt this midinote to cps
iamp	ampmidi	10000	;cvt this midi vel to amp
kmodwh	midictrl	1,0,1	;cc#1 (mod wheel) scaled 0-1

; use the mod wheel to control vib width and rate
klfo	oscili	ivibwth*kmodwh,ilfohz*kmodwh,gisine
kvib	=	1+klfo	;offset by 1 for use as multiplier
kamp	linenr	iamp,.01,.5,.01
kindex	linenr	index,.01,.25,.01
asig	foscil	kamp,icps*kvib,icar,imod,kindex,gisine
	out	asig
	endin

;dumb score for midibach.orc to force Csound to execute for 2 minutes while playing bachinv.mid
f0	120