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<CENTER><A NAME="Play_One_Note"></A>
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<H1>
Toot 1: Play One Note</H1>
For this and all instrument examples , there exist <B>orchestra</B> and
<B>score</B> files in the <B>Csound</B> subdirectory <B><A HREF="#Tutorial_Materials">tutorfiles</A></B>
that the user can run to soundtest each feature introduced. The instrument
code shown below is actually preceded by an <I><A HREF="../Syntax/orches.html">orchestra
header section </A></I>similar to that shown above. If you are running
on a RISC computer, each example will likely run in realtime. During playback
(realtime or otherwise) the audio rate may automatically be modified to
suit the local d-a converters.

<P>The first orchestra file, called <I><A HREF="#Tutorial_Materials">toot1.orc,</A></I>
contains a single instrument which uses an <B><A HREF="../Generate/oscil.html">oscil</A></B>
unit to play a 440Hz sine wave (defined by f1 in the score) at an amplitude
of 10000.
<PRE><TT>&nbsp; instr 1
&nbsp;&nbsp;&nbsp; a1&nbsp;&nbsp;&nbsp;&nbsp; oscil&nbsp;&nbsp;&nbsp;&nbsp; 10000, 440, 1
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; out&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a1
&nbsp;&nbsp; endin</TT></PRE>
Run this with its corresponding score file, <I>toot1.sco</I> :
<PRE><TT>&nbsp; f1&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp; 4096 10&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp; ; use "gen1" to compute a sine wave
&nbsp; i1&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp; 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; run "instr 1" from time 0&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; for 4 seconds
&nbsp; e&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ; indicate the "end" of the score</TT></PRE>

<PRE><TT></TT></PRE>

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<CENTER><B><I><FONT COLOR="#006600">HTML Csound Manual - <FONT SIZE=-1>&copy;
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