<CsoundSynthesizer> 
 
<CsOptions>
; Select audio/midi flags here according to platform
; Audio out   Audio in
-odac           -iadc    ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o imageopcodesdemo2.wav -W ;;; for file output any platform
</CsOptions> 

<CsInstruments> 
sr      =      	48000 
ksmps  	=     	100
nchnls	=	2

;By Cesare Marilungo 2008
zakinit 10,1

;Load the image - should be 512x512 pixels
giimage imageload "test1.png"
;giimage imageload "test2.png" ;--try this too
giimagew, giimageh imagesize giimage

giwave ftgen 1, 0, 1024, 10, 1
gifrqs ftgen 2,0,512,-5, 1,512,10
giamps ftgen 3, 0, 512, 10, 1

	instr 100

kindex = 0
icnt = giimageh
kx_ linseg 0, p3, 1
kenv linseg 0, .2, 500, p3 - .4, 500, .2, 0

; Read a column of pixels and store the red values
; inside the table 'giamps'
loop:
    ky_ = kindex/giimageh

    ;Get the pixel color values at kx_, ky_
    kred, kgreen, kblue imagegetpixel giimage, kx_, ky_

    ;Write the red values inside the table 'giamps'
    tablew kred, kindex, giamps
    kindex = kindex+1

if (kindex < icnt) kgoto loop

; Use an oscillator bank (additive synthesis) to generate sound
; setting amplitudes for each partial according to the image
asig adsynt kenv, 220, giwave, gifrqs, giamps, icnt, 2
outs asig, asig

	endin

	instr 101
; Free memory used by the image
imagefree giimage
	endin

</CsInstruments> 
<CsScore>

t 0 60

i100 1 20 
i101 21 1

e

</CsScore>
</CsoundSynthesizer>