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Time: 2006-12-20 12:40:27
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!!Tutorial ­2­
The patch for this tutorial is pretty self­explanatory.
This tutorial deals with various ways of sending messages
in PD. Messages can be directly attached to affected
objects or could be sent around with the "[send":[send object.
"[send":[send takes an argument, matching "[receive":[receive arguments will
receive the messages from the corresponding send. One
thing is important to note: do not overuse "[send":[send and
"[receive":[receive pairs. If order of messages is important try to
use patchcords to route your messages. Generally, the left
inlet of an objects triggers an action so if an object has
more than one inlet and you want to provide (one of) the
right inlets with some values before triggering you have to
think about your patching. "[trigger":[trigger will often come in
handy. Remember that "[trigger":[trigger outputs right to left (in
fact all message/data passing is done in the right to left
order except when there are more than 1 patch cords coming
out of an outlet, the order could get confused). Also, when
in doubt, use trigger to make sure your order is
maintained. The order of message/data passing could cause
subtle errors in your patch and those bugs are hard to
All this only partially applies to signal (~) objects.
Signal objects (generaly) output continually while audio is
on (compute audio button on the main pd window is pressed)
but since your patches will most likely include non­signal
objects it is important to keep these things in mind.
Look at the patch
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