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110 lines
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110 lines
3.3 KiB
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<H1><A ID="SECTION00750000000000000000">
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Control streams in block diagrams</A>
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</H1>
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<P>
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<DIV ALIGN="CENTER"><A ID="fig03.06"></A><A ID="3627"></A>
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<TABLE>
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<CAPTION ALIGN="BOTTOM"><STRONG>Figure 3.6:</STRONG>
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Conversion between control and audio: (a) control to signal; (b)
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signal to control by snapshots.</CAPTION>
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<TR><TD><IMG
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WIDTH="346" HEIGHT="160" BORDER="0"
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ALT="\begin{figure}\psfig{file=figs/fig03.06.ps}\end{figure}"></TD></TR>
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</TABLE>
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</DIV>
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<P>
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Figure <A HREF="#fig03.06">3.6</A> shows how control streams are expressed in block diagrams,
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using control-to-signal and signal-to-control conversion as examples. Control
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streams are represented using dots (as opposed to audio signals which appear
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as solid arrows).
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<P>
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The <I>signal</I> block converts from a numeric control stream to an audio
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signal. The exact type of conversion isn't specified at this level of
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detail; in the Pd examples the choice of conversion operator
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will determine this.
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<P>
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The <I>snapshot</I> block converts from audio signals back to numeric
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control streams. In addition to the audio signal, a separate, control input
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is needed to specify the time sequence at which the audio signal is sampled.
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<P>
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<BR><HR>
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<ADDRESS>
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Miller Puckette
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2006-12-30
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