[PD] beat detection - live sound input

[Olaf Matthes]

metafor schrieb:
> i tried maxlib beat but i think this is just for midi.

Hi Marc,

open the attached patch to see how it could be done using maxlib's beat
and fiddle~. In this case I miss-use fiddle~s second outlet (= bang on
attack) to get the beat from audio input.
In case you just want to trigger events you probably won't need beat,
just fiddle~...!?

Olaf
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#N canvas 285 272 604 394 12;
#X floatatom 71 333 8 0 0 0 - - -;
#X floatatom 92 307 5 0 0 0 - - -;
#X text 148 335 beats per minute;
#X obj 114 276 bng 20 250 50 0 empty empty empty 0 -6 0 8 -262144 -258699
-1;
#X text 144 277 'on beat';
#X text 147 309 milliseconds;
#X obj 71 245 beat 4;
#X obj 71 222 makenote 60 60;
#X msg 71 196 60;
#X obj 36 127 readsf~;
#X msg 36 92 open \$1;
#X msg 36 38 bang;
#X obj 36 66 openpanel;
#X obj 35 155 fiddle~ 1024 1 20 3;
#X text 124 35 fiddle~ outputs a bang whenever it thinks a new note
arrived \, just use this bang to create a faked midi note using makenote
and feed this data into beat...;
#X msg 105 92 1;
#X msg 144 92 0;
#X msg 210 222 reset;
#X connect 6 0 0 0;
#X connect 6 1 1 0;
#X connect 6 2 3 0;
#X connect 7 0 6 0;
#X connect 7 1 6 1;
#X connect 8 0 7 0;
#X connect 9 0 13 0;
#X connect 10 0 9 0;
#X connect 11 0 12 0;
#X connect 12 0 10 0;
#X connect 13 1 8 0;
#X connect 15 0 9 0;
#X connect 16 0 9 0;
#X connect 17 0 6 0;