Hi Thomas,
thanks for your reply!
Yes I have tried re-[block~]ing the patch to 1 sample and using snapshot.
I have also tried using [tabsend~] at normal 64 sample block size, and
then various means of reading out the samples from the table, including
[until] and [timer].
I got close with using an integer-based counter [i]x[f] and then either
resetting it or using a modulo. Both had their downsides.
The first patch, using a modulo [%] object to cycle from 0 to 63,
startsed out very precise but degraded over time as the integer from the
counter structure above it increases.
The second patch, using [select] to reset the counter and cycle from 0
to 63, was far less accurate and gives periodic errors from the very start.
I thought that I had gotten it working with [block~] and [timer], but
returning to that patch after a year I see that it does not in fact do
it. I have attached the patch here for your scrutiny.
Best!
Derek
#N canvas 790 130 932 636 12;
#N canvas 399 190 1021 779 sig2float 0;
#X obj 37 27 inlet~ sig;
#X obj 157 27 inlet bang;
#X obj 157 260 outlet float;
#X text 377 225 Derek Holzer;
#X text 378 281 macumbi...@gmail.com;
#N canvas 0 22 450 278 (subpatch) 0;
#X array \$0-sig 64 float 2;
#X coords 0 1 64 -1 200 140 1 0 0;
#X restore 380 58 graph;
#X obj 256 27 inlet IntExt;
#X obj 157 63 spigot;
#X obj 256 51 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 1
1;
#X obj 157 223 tabread \$0-sig;
#X text 376 253 October 2021 Stockholm;
#X obj 160 101 bang~;
#X obj 159 145 timer 1 sample;
#X obj 40 223 tabread~ \$0-sig;
#X obj 39 256 outlet~ sig;
#X obj 256 73 switch~;
#X obj 37 63 tabsend~ \$0-sig;
#X connect 0 0 16 0;
#X connect 1 0 7 0;
#X connect 6 0 8 0;
#X connect 7 0 12 1;
#X connect 8 0 7 1;
#X connect 8 0 15 0;
#X connect 9 0 2 0;
#X connect 11 0 12 0;
#X connect 12 0 9 0;
#X connect 12 0 13 0;
#X connect 13 0 14 0;
#X restore 244 255 pd sig2float;
#X obj 285 172 metro;
#X obj 285 151 tgl 15 1 empty empty empty 17 7 0 10 -262144 -1 -1 1
1;
#X msg 305 147 tempo 1 samp;
#X obj 244 212 osc~ 440;
#X obj 325 213 tgl 15 1 empty empty empty 17 7 0 10 -262144 -1 -1 1
1;
#X obj 305 112 loadbang;
#X obj 53 359 cnv 15 210 219 empty empty empty 20 12 0 14 -4034 -66577
0;
#N canvas 0 22 450 300 (subpatch) 0;
#X array \$0-sum1 1001 float 0;
#X coords 0 1.02 1000 -1.02 200 50 1 0 0;
#X restore 55 376 graph;
#X obj 121 139 loadbang;
#X msg 116 162 1;
#X obj 175 319 tabwrite~ \$0-sum1;
#N canvas 0 22 450 300 (subpatch) 0;
#X array \$0-sum2 1001 float 0;
#X coords 0 1.02 1000 -1.02 200 50 1 0 0;
#X restore 56 441 graph;
#N canvas 0 22 450 300 (subpatch) 0;
#X array \$0-sum3 1001 float 0;
#X coords 0 1.1 1000 -1.1 200 50 1 0 0;
#X restore 56 506 graph;
#X obj 244 291 tabwrite~ \$0-sum2;
#X obj 325 320 tabwrite~ \$0-sum3;
#X obj 328 387 samplerate~;
#X floatatom 181 563 7 0 0 1 _ms-- #0-msin #0-msout;
#X obj 328 362 loadbang;
#X obj 98 185 metro 200;
#X obj 328 412 expr (1000 / $f1) * 1000;
#X obj 389 363 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X text 43 562 -- 1000 samples or;
#X obj 328 441 s \$0-msin;
#X text 352 254 <------conversion from signal to float;
#X connect 0 0 14 0;
#X connect 0 1 15 0;
#X connect 1 0 0 1;
#X connect 2 0 1 0;
#X connect 3 0 1 0;
#X connect 4 0 0 0;
#X connect 4 0 11 0;
#X connect 5 0 0 2;
#X connect 6 0 3 0;
#X connect 9 0 10 0;
#X connect 10 0 19 0;
#X connect 16 0 20 0;
#X connect 18 0 16 0;
#X connect 19 0 11 0;
#X connect 19 0 14 0;
#X connect 19 0 15 0;
#X connect 20 0 23 0;
#X connect 21 0 16 0;
On 2022-10-15 18:37, Thomas Grill wrote:
Hi Derek,
not sure exactly whether you have covered this, but
- what about a subpatch/abstraction with blocksize 1 and a [bang~]/[snapshot~]
to deliver the sample?
- or at normal blocksize a [tabsend~] and then [until] to read out the frames
from the buffer?
the physical timing will be more or less the same, because it all depends on
the block input from the audio system.
From what i read in your email, i guess you would like (with the timer) to
have a physically correct timing.
But this will never be the case. It is all in logical time, with all
single-frame processing happening between blocks of (usually) 64 frames input
from the audio IO.
--
Derek Holzer
noise.art.technology
http://macumbista.net
_______________________________________________
Pd-list@lists.iem.at mailing list
UNSUBSCRIBE and account-management ->
https://lists.puredata.info/listinfo/pd-list
