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Bruno Ruviaro added Pbind can play your SynthDef.tex
almost 10 years ago
Commit id: c0cc356eea325aba08107c17f82feea8f365cf9b
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\section{Pbind can play your SynthDef}
One of the beauties of creating your synths as \texttt{SynthDef}s is that you can use \texttt{Pbind} to play them.
Assuming the \texttt{"wow"} SynthDef is still loaded in memory (it should, unless you quit and reopened SC after the last example), try the \texttt{Pbind}s below:
\begin{lstlisting}[style=SuperCollider-IDE, basicstyle=\scttfamily\footnotesize]
(
Pbind(
\instrument, "wow",
\degree, Pwhite(-7, 7),
\dur, Prand([0.125, 0.25], inf),
\amp, Pwhite(0.5, 1),
\wowrelease, 1
).play;
)
(
Pbind(
\instrument, "wow",
\scale, Pstutter(8, Pseq([
Scale.lydian,
Scale.major,
Scale.mixolydian,
Scale.minor,
Scale.phrygian], inf)),
\degree, Pseq([0, 1, 2, 3, 4, 5, 6, 7], inf),
\dur, 0.2,
\amp, Pwhite(0.5, 1),
\wowrelease, 4,
\legato, 0.1
).play;
)
\end{lstlisting}
When using \texttt{Pbind} to play one of your custom \texttt{SynthDef}s, just keep in mind the following points:
\begin{itemize}
\item Use the \texttt{Pbind} key \texttt{\textbackslash instrument} to declare the name of your \texttt{SynthDef};
\item All the arguments of your SynthDef are accessible and controllable from inside \texttt{Pbind}: simply use them as \texttt{Pbind} keys. For example, notice the argument called \texttt{\textbackslash wowrelease} used above. It is not one of the default keys understood by \texttt{Pbind}---rather, it is unique to the synth definition \texttt{wow};
\item In order to use all of the pitch conversion facilities of \texttt{Pbind}---the keys \texttt{\textbackslash degree}, \texttt{\textbackslash note}, and \texttt{\textbackslash midinote}, make sure your \texttt{SynthDef} has an argument input for \texttt{freq} (it has to be spelled exactly like that);
\item Make sure your SynthDef uses an envelope that includes a doneAction: 2 in order to free the nodes in the server;
\item If using a sustained envelope such as \texttt{Env.adsr}, make sure your synth has a default argument \texttt{gate = 1} (\texttt{gate} has to be spelled exactly like that, because \texttt{Pbind} uses it behind the scenes to stop notes at the right times).
\end{itemize}
Exercise: take the \texttt{"pluck"} SynthDef provided below and write one or more \texttt{Pbind}s to play it. For the \texttt{mutedString} argument, try values between 0.1 and 0.9. Have one of your \texttt{Pbind}s play a sequence of chords, and see what happens when you use the default key \texttt{\textbackslash strum} with values like 0, 0.1, 0.5, 1, etc.
\begin{lstlisting}[style=SuperCollider-IDE, basicstyle=\scttfamily\footnotesize]
(
SynthDef("pluck", {arg amp = 0.1, freq = 440, decay = 5, mutedString = 0.1;
var env, snd;
env = Env.linen(0, decay, 0).kr(doneAction: 2);
snd = Pluck.ar(
in: WhiteNoise.ar(amp),
trig: Impulse.kr(0),
maxdelaytime: 0.1,
delaytime: freq.reciprocal,
decaytime: decay,
coef: mutedString);
Out.ar(0, [snd, snd]);
}).add;
)
\end{lstlisting}
