Hallo, martin brinkmann hat gesagt: // martin brinkmann wrote: > in the past (reaktor) i have used the songposition most of the time, and > made everything counter-based. (always perfectly in sync, > but harder to manually re-sync). > since i was happy that my first pd patch (a 'rockafella'-based > loop-player) was running pretty well (and in sync) with this > pahsor based approach, i continued to use this method. i agree that it > is a waste of cpu. maybe id would be a good idea to use only one phasor > (or a vline based 'phasor') to drive a counter and than use this > counter for the different sequencers. at least when it is not > neccessary to sync the different modules independently. > (groovebox2...)
Actually for a rather deep technical reason re-syncing of a [phasor~] is not as accurate in Pd as resyncing a clock-based timing message like the ones generated by [metro]. The background is: The right inlet of [phasor~] or [osc~] which set the phase will only accept messages on block boundaries of 64 samples. So you cannot sync anything more exact than about 1.5msec. Clock-derive messages like those of metro, delay, pipe or qlist can be used in conjunction with vline~ to overcome this 64-samples limit. The difference between both is illustrated in attached patch. Ciao -- Frank Barknecht _ ______footils.org_ __goto10.org__
#N canvas 0 0 878 567 10; #N canvas 0 0 450 300 (subpatch) 0; #X array phasor 1024 float 2; #X coords 0 1 1024 0 512 80 1; #X restore 100 20 graph; #N canvas 0 0 450 300 (subpatch) 0; #X array clock-based 1024 float 2; #X coords 0 1 1024 0 512 80 1; #X restore 100 120 graph; #X obj 260 286 metro 2; #X obj 260 239 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1; #X obj 260 260 t a a; #X obj 187 433 tabwrite~ phasor; #X obj 385 433 tabwrite~ clock-based; #X msg 683 321 \; pd dsp \$1; #X obj 683 297 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 1 1; #X obj 661 139 s phasor; #X obj 649 163 s clock-based; #X msg 260 310 0; #X obj 188 382 phasor~ 200; #X msg 649 109 xticks 0 64 1; #X obj 384 395 vline~; #X msg 384 373 0 \, 10 50; #X text 648 50 marks every 64 samples; #X obj 649 84 loadbang; #X text 166 492 The phasor~-phase only gets reset quantized to 64 samples. This leads to irregularities. vline~ however will give a regular pulse independent of the 64-samples boundaries.; #X msg 634 191 const 0; #X obj 337 286 t b b b; #X obj 336 266 select 1; #X connect 2 0 11 0; #X connect 2 0 15 0; #X connect 3 0 4 0; #X connect 4 0 2 0; #X connect 4 1 21 0; #X connect 8 0 7 0; #X connect 11 0 12 1; #X connect 12 0 5 0; #X connect 13 0 10 0; #X connect 13 0 9 0; #X connect 14 0 6 0; #X connect 15 0 14 0; #X connect 17 0 13 0; #X connect 19 0 9 0; #X connect 19 0 10 0; #X connect 20 0 5 0; #X connect 20 1 6 0; #X connect 21 0 20 0;
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