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<programlisting>
<emphasis role="csdtag">&lt;CsoundSynthesizer&gt;</emphasis>
<emphasis role="csdtag">&lt;CsOptions&gt;</emphasis>
<emphasis role="comment">; Select audio/midi flags here according to platform</emphasis>
-odac   <emphasis role="comment">;;;realtime audio out</emphasis>
<emphasis role="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</emphasis>
<emphasis role="comment">; For Non-realtime ouput leave only the line below:</emphasis>
<emphasis role="comment">; -o equals.wav -W ;;; for file output any platform</emphasis>
<emphasis role="csdtag">&lt;/CsOptions&gt;</emphasis>
<emphasis role="csdtag">&lt;CsInstruments&gt;</emphasis>

<emphasis role="ohdr">sr</emphasis> <emphasis role="op">=</emphasis> 44100
<emphasis role="ohdr">ksmps</emphasis> <emphasis role="op">=</emphasis> 32
<emphasis role="ohdr">nchnls</emphasis> <emphasis role="op">=</emphasis> 2
<emphasis role="ohdr">0dbfs</emphasis>  <emphasis role="op">=</emphasis> 1
	
<emphasis role="oblock">instr</emphasis> 1

ienv <emphasis role="op">=</emphasis> p4				<emphasis role="comment">;choose envelope in score</emphasis>

<emphasis role="octrl">if</emphasis> (ienv <emphasis role="op">==</emphasis> 0) kthen 	
  kenv <emphasis role="opc">adsr</emphasis> 0.05, 0.05, 0.95, 0.05	<emphasis role="comment">;sustained envelope</emphasis>
<emphasis role="octrl">elseif</emphasis> (ienv <emphasis role="op">==</emphasis> 1) kthen 
  kenv <emphasis role="opc">adsr</emphasis> 0.5, 1, 0.5, 0.5		<emphasis role="comment">;triangular envelope</emphasis>
<emphasis role="octrl">elseif</emphasis> (ienv <emphasis role="op">==</emphasis> 2) kthen 
  kenv <emphasis role="opc">adsr</emphasis> 1, 1, 1, 0			<emphasis role="comment">;ramp up</emphasis>
<emphasis role="octrl">endif</emphasis>

aout   <emphasis role="opc">vco2</emphasis> .1, 110, 10
aout   <emphasis role="op">=</emphasis> aout <emphasis role="op">*</emphasis> kenv
       <emphasis role="opc">outs</emphasis> aout, aout

<emphasis role="oblock">endin</emphasis>

<emphasis role="csdtag">&lt;/CsInstruments&gt;</emphasis>
<emphasis role="csdtag">&lt;CsScore&gt;</emphasis>

<emphasis role="stamnt">i</emphasis>1 0 2  0
<emphasis role="stamnt">i</emphasis>1 3 2  1
<emphasis role="stamnt">i</emphasis>1 6 2  2

<emphasis role="stamnt">e</emphasis>
<emphasis role="csdtag">&lt;/CsScore&gt;</emphasis>
<emphasis role="csdtag">&lt;/CsoundSynthesizer&gt;</emphasis>
</programlisting>