puredata-doc 0.46.7-3 / usr / share / puredata / doc / 3.audio.examples / D12.sampler.bis.pd

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#X text 932 435 pitch;
#X text 851 344 ARGUMENTS FOR:;
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#X text 13 4 POLY SAMPLER \, VERSION 2 FOR SEPARATE NOTE-ON/OFF MESSAGES
;
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#X text 932 368 ON/OFF TRANSITIONS:;
#X text 785 367 ENTIRE NOTES:;
#X text 932 390 tag;
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#X text 929 460 (same other 4);
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#X text 860 641 updated for Pd version 0.37;
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#X text 14 35 Here is a variation on the polyphonic sampler \, which
can take separate messages to start and stop notes (so that you can
attach it to a MIDI keyboard \, for example.) "Note" messages act as
before \, but in an intermediate step they are split onto note-on and
note-off messages \, sent to "onoff". You can alternatively send messages
straight to onoff if you don't know the duration in advance.;
#X text 12 150 Messages to "onoff" require a tag \, which is a number
shared between the note-on and note-off message so that we can track
down the voice to turn it off. If you're using MIDI input \, you can
just re-use the pitch as a tag.;
#X text 102 508 separate messages for not on and off:;
#X text 101 608 single messages to do both as before:;
#X text 10 221 Messages to "onoff" whose amplitude is zero are note-off
messages (the other parameters of note-off messages are ignored). The
"sampvoice2" abstraction is a modification of "sampvoice" which looks
at the amplitude field to decide whether to begin or end a note.;
#X text 10 301 To convert "note" messages to pairs of "onoff" messages
\, first a counter generates a tag. The the "pipe" object delays a
copy of the tag \, which the following "pack" object converts into
a note-off message (a pair of numbers \, the tag and a zero.);
#X text 9 382 Under "r onoff" \, the poly object allocates a voice
number \, putting it out paired with velocity. After swapping the two
and packing them into a single message \, the amplitude is checked
against zero by the "route 0" object \; if zero \, the "pack" confects
a 2-argument message (voice number and zero). Otherwise \, the "unpack"
retrieves the nonzero amplitude for a note-on message \, to which we
add all the other parameters and route to the appropriate voice.;
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