add csound minimal example

packages/csound/example/tutorial1.csd

@@ -0,0 +1,44 @@
+;; Author: Steven Yi
+<CsoundSynthesizer>
+<CsOptions>
+-o dac --port=10000
+</CsOptions>
+<CsInstruments>
+sr=48000
+ksmps=64
+nchnls=2
+0dbfs=1
+
+instr 1
+    ioct = octcps(p4)
+    kpwm = oscili(.1, 5)
+    asig = vco2(p5, p4, 4, .5 + kpwm)
+    asig += vco2(p5, p4 * 2)
+
+    idepth = 3
+    acut = transegr:a(0, .002, 0, idepth, .5, -4.2, 0.001, .5, -4.2, 0)
+    asig = zdf_2pole(asig, cpsoct(ioct + acut), 0.5)
+
+    asig *= linsegr:a(1, p3, 1, .5, 0)
+
+    out(asig, asig)
+
+endin
+
+instr Main
+    inotes[] fillarray 60, 67, 63, 65, 62
+    ioct[] fillarray 0,1,0,0,1
+    inote = inotes[p4 % 37 % 11 % 5] + 12 * ioct[p4 % 41 % 17 % 5]
+    schedule(1, 0, .25, cpsmidinn(inote), 0.25)
+
+    if(p4 % 64 % 37 % 17 % 11 == 0 && inote != 74 && inote != 62) then
+        schedule(1, 0, .5, cpsmidinn(inote + 7), 0.125)
+    endif
+
+    schedule(p1, .25, .25, p4 + 1)
+endin
+
+schedule("Main", 0, 0, 0)
+
+</CsInstruments>
+</CsoundSynthesizer>