Hi William, Thanks for the suggestions. This is really useful as I didn't know that you can format messages for soundfiler like that.
So I made all of your suggested changes but I'm still getting the funny noisy playback. It sounds almost ring-modulated (e.g. you hear a lower-frequency sideband at around 10 seconds into the file, which isn't in the input file). Here's the recorded output of the patch: https://dl.dropboxusercontent.com/u/47945259/testoutput.wav Could it be an OS X issue? Thanks Peiman PS I've attached the new patch with your suggested changes. *www.peimankhosravi.co.uk || RSS Feed<http://peimankhosravi.co.uk/miscposts.rss> || Concert News <http://spectralkimia.wordpress.com/>* On 28 October 2013 12:18, William Brent <[email protected]> wrote: > Hi Peiman, I notice a few things: > > 1) your soundfile is being truncated to 4000000 samples > > 2) you're loading the left channel of your stereo file into both arrays > > 3) after calculating the correct frequency for phasor~ to play at normal > speed, you're multiplying by zero. > > With 3), maybe you have that there so you can scale the playback speed > with a control later. But re: 1 & 2, try a message to soundfiler like this: > > read -maxsize 6.24e+06 -resize $1 test_L test_R > > That will increase soundfiler's default maxsize so your complete sample > can be loaded. Also note that with the "read" command you can list 2 tables > to load to with stereo audio files. You had those tables listed in separate > messages…with 2 separate "read" calls, soundfiler is starting over each > time and has no way of knowing that you want to continue where you left off. > > I didn't listen carefully with headphones, but after those changes I > didn't hear an obvious difference between tabread4~'s playback of your file > vs. my web browser's. > > > Hope that helps, > William > > > > On Sun, Oct 27, 2013 at 9:23 AM, peiman khosravi <[email protected] > > wrote: > >> Attached is a simple patch that reads sound file data from an array with >> tabread4~. >> >> Does someone know why the result is so noisy? Please try with this sound >> file (96k 24bit): https://dl.dropboxusercontent.com/u/47945259/test.aif. >> >> It sounds like some sort of extreme quantisation noise. But maybe I've >> missed something in the patch. >> >> I'm on the latest version of pd vanilla on os x 10.7.5. >> >> Many Thanks >> Peiman >> >> >> #N canvas 439 22 536 684 10; >> #X obj 77 213 soundfiler; >> #X obj 77 113 openpanel; >> #X obj 62 414 *~; >> #X obj -8 305 /; >> #X obj 77 95 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1 >> -1; >> #N canvas 0 22 450 278 (subpatch) 0; >> #X array test_R 4e+06 float 2; >> #X coords 0 1 4e+06 -1 200 140 1 0 0; >> #X restore 214 -69 graph; >> #X obj 59 549 dac~; >> #X obj -8 368 phasor~; >> #X obj 7 248 t b f; >> #X msg 31 334 0; >> #X obj -8 281 pack 96000 f; >> #X obj 16 474 tabread4~ test_L; >> #X obj 120 474 tabread4~ test_R; >> #X msg 219 152 read -resize \$1 test_R; >> #X msg 77 152 read -resize \$1 test_L; >> #N canvas 0 22 450 278 (subpatch) 0; >> #X array test_L 4e+06 float 2; >> #X coords 0 1 4e+06 -1 200 140 1 0 0; >> #X restore 8 -68 graph; >> #X obj -8 343 * 0; >> #X text 28 321 restart; >> #X connect 0 0 2 1; >> #X connect 0 0 8 0; >> #X connect 1 0 14 0; >> #X connect 1 0 13 0; >> #X connect 2 0 11 0; >> #X connect 2 0 12 0; >> #X connect 3 0 16 0; >> #X connect 4 0 1 0; >> #X connect 7 0 2 0; >> #X connect 8 0 10 0; >> #X connect 8 1 10 1; >> #X connect 9 0 7 1; >> #X connect 10 0 3 0; >> #X connect 11 0 6 0; >> #X connect 12 0 6 1; >> #X connect 13 0 0 0; >> #X connect 14 0 0 0; >> #X connect 16 0 7 0; >> >> >> *www.peimankhosravi.co.uk || RSS >> Feed<http://peimankhosravi.co.uk/miscposts.rss> >> || Concert News <http://spectralkimia.wordpress.com/>* >> >> >> _______________________________________________ >> [email protected] mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> > > > -- > William Brent > www.williambrent.com > > “Great minds flock together” > Conflations: conversational idiom for the 21st century > > www.conflations.com >
test2.pd
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