yoyz / amsynth

Automatically exported from code.google.com/p/amsynth
GNU General Public License v2.0
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no sound from LV2 after version 1.4.2 #83

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
I'm not using the any graphical environment, just trying to get sounds out of 
the lv2 output buffers. No problems whatsoever until version 1.5.0...I've been 
trying to figure out why there's no sound, cannot figure it out

Original issue reported on code.google.com by peppersc...@gmail.com on 4 Feb 2015 at 2:50

GoogleCodeExporter commented 9 years ago
Which LV2 host program are you using?

Did you install amsynth from source code or a binary package?

The MIDI event handling changed in amsynth 1.5.0 to make it sample accurate - 
as a result if the sample offsets in the MIDI input stream 
(LV2_Atom_Event.time.frames) are wrong, or the events are not sorted in order, 
it would cause problems.

Original comment by nixxpep...@gmail.com on 5 Feb 2015 at 7:04

GoogleCodeExporter commented 9 years ago
I wrote my own, but I lifted the atom code from jalv. I'm building amsynth from 
source every time. 
this is great info, will double check my calculations before concluding that 
it's a problem with amsynth

Original comment by fenlonor...@gmail.com on 5 Feb 2015 at 8:43

GoogleCodeExporter commented 9 years ago
Any luck finding the cause of the problem?

If it's a bug with amsynth, please let me know!

Original comment by nickdowell on 13 Feb 2015 at 7:24

GoogleCodeExporter commented 9 years ago
hi! not yet. It would be helpful to know exactly the difference between how 
amsynth handles the atom data (how it handles the atom data differently after 
1.4.2)...or at least exactly how it is expecting the atoms in order to 
calculate the necessary deltas...
Is it it just LV2_Atom_Event.time.frames that's calculated in a different way?

Original comment by peppersc...@gmail.com on 13 Feb 2015 at 7:39

GoogleCodeExporter commented 9 years ago
Please try with the latest amsynth code from git, I have made a change so that 
the order of midi events passed in should no longer matter.

Original comment by nickdowell on 14 Feb 2015 at 9:02

GoogleCodeExporter commented 9 years ago
Thanks a lot for putting in some effort regarding this...unfortunately I'm 
still not getting audio back from amsynth, I've tried dssi and lv2, it's 
definitely something with the atom. I'll take a look at the git log and see if 
I can track it down. Thanks again

Original comment by peppersc...@gmail.com on 15 Feb 2015 at 9:05