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<programlisting>
<emphasis role="csdtag"><CsoundSynthesizer></emphasis>
<emphasis role="csdtag"><CsOptions></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 opcode_example.wav -W ;;; for file output any platform</emphasis>
<emphasis role="csdtag"></CsOptions></emphasis>
<emphasis role="csdtag"><CsInstruments></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="op">/</emphasis><emphasis role="op">*</emphasis> example <emphasis role="oblock">opcode</emphasis> 1<emphasis role="op">:</emphasis> simple oscillator <emphasis role="op">*</emphasis><emphasis role="op">/</emphasis>
<emphasis role="oblock">opcode</emphasis> Oscillator, a, kk
kamp, kcps <emphasis role="opc">xin</emphasis> <emphasis role="comment">; read input parameters</emphasis>
a1 <emphasis role="opc">vco2</emphasis> kamp, kcps <emphasis role="comment">; sawtooth oscillator</emphasis>
<emphasis role="opc">xout</emphasis> a1 <emphasis role="comment">; write output</emphasis>
<emphasis role="oblock">endop</emphasis>
<emphasis role="op">/</emphasis><emphasis role="op">*</emphasis> example <emphasis role="oblock">opcode</emphasis> 2<emphasis role="op">:</emphasis> lowpass filter with local <emphasis role="ohdr">ksmps</emphasis> <emphasis role="op">*</emphasis><emphasis role="op">/</emphasis>
<emphasis role="oblock">opcode</emphasis> Lowpass, a, akk
<emphasis role="opc">setksmps</emphasis> 1 <emphasis role="comment">; need sr=kr</emphasis>
ain, ka1, ka2 <emphasis role="opc">xin</emphasis> <emphasis role="comment">; read input parameters</emphasis>
aout <emphasis role="opc">init</emphasis> 0 <emphasis role="comment">; initialize output</emphasis>
aout <emphasis role="op">=</emphasis> ain<emphasis role="op">*</emphasis>ka1 <emphasis role="op">+</emphasis> aout<emphasis role="op">*</emphasis>ka2 <emphasis role="comment">; simple tone-like filter</emphasis>
<emphasis role="opc">xout</emphasis> aout <emphasis role="comment">; write output</emphasis>
<emphasis role="oblock">endop</emphasis>
<emphasis role="op">/</emphasis><emphasis role="op">*</emphasis> example <emphasis role="oblock">opcode</emphasis> 3<emphasis role="op">:</emphasis> recursive call <emphasis role="op">*</emphasis><emphasis role="op">/</emphasis>
<emphasis role="oblock">opcode</emphasis> RecursiveLowpass, a, akkpp
ain, ka1, ka2, idep, icnt <emphasis role="opc">xin</emphasis> <emphasis role="comment">; read input parameters</emphasis>
<emphasis role="octrl">if</emphasis> (icnt <emphasis role="op">>=</emphasis> idep) <emphasis role="octrl">goto</emphasis> <emphasis role="olabel">skip1</emphasis> <emphasis role="comment">; check if max depth reached</emphasis>
ain RecursiveLowpass ain, ka1, ka2, idep, icnt <emphasis role="op">+</emphasis> 1
<emphasis role="olabel">skip1</emphasis><emphasis role="op">:</emphasis>
aout Lowpass ain, ka1, ka2 <emphasis role="comment">; call filter</emphasis>
<emphasis role="opc">xout</emphasis> aout <emphasis role="comment">; write output</emphasis>
<emphasis role="oblock">endop</emphasis>
<emphasis role="op">/</emphasis><emphasis role="op">*</emphasis> example <emphasis role="oblock">opcode</emphasis> 4<emphasis role="op">:</emphasis> de<emphasis role="op">-</emphasis>click envelope <emphasis role="op">*</emphasis><emphasis role="op">/</emphasis>
<emphasis role="oblock">opcode</emphasis> DeClick, a, <emphasis role="opc">a</emphasis>
ain <emphasis role="opc">xin</emphasis>
aenv <emphasis role="opc">linseg</emphasis> 0, 0.02, 1, p3 <emphasis role="op">-</emphasis> 0.05, 1, 0.02, 0, 0.01, 0
<emphasis role="opc">xout</emphasis> ain <emphasis role="op">*</emphasis> aenv <emphasis role="comment">; apply envelope and write output</emphasis>
<emphasis role="oblock">endop</emphasis>
<emphasis role="op">/</emphasis><emphasis role="op">*</emphasis> <emphasis role="oblock">instr</emphasis> 1 uses the example opcodes <emphasis role="op">*</emphasis><emphasis role="op">/</emphasis>
<emphasis role="oblock">instr</emphasis> 1
kamp <emphasis role="op">=</emphasis> .7 <emphasis role="comment">; amplitude</emphasis>
kcps <emphasis role="opc">expon</emphasis> 50, p3, 500 <emphasis role="comment">; pitch</emphasis>
a1 Oscillator kamp, kcps <emphasis role="comment">; call oscillator</emphasis>
kflt <emphasis role="opc">linseg</emphasis> 0.4, 1.5, 0.4, 1, 0.8, 1.5, 0.8 <emphasis role="comment">; filter envelope</emphasis>
a1 RecursiveLowpass a1, kflt, 1 <emphasis role="op">-</emphasis> kflt, 10 <emphasis role="comment">; 10th order lowpass</emphasis>
a1 DeClick a1
<emphasis role="opc">outs</emphasis> a1, a1
<emphasis role="oblock">endin</emphasis>
<emphasis role="csdtag"></CsInstruments></emphasis>
<emphasis role="csdtag"><CsScore></emphasis>
<emphasis role="stamnt">i</emphasis> 1 0 4
<emphasis role="stamnt">e</emphasis>5 <emphasis role="comment">;extra second before quitting</emphasis>
<emphasis role="csdtag"></CsScore></emphasis>
<emphasis role="csdtag"></CsoundSynthesizer></emphasis>
</programlisting>
|
