VST making a module act weird. Bug or not?

Dictator · February 12, 2009, 13:45:34

This is the situation. I use a VSTi plugin called DSK Brass for brass sounds. It loads and I put two notes after each other (with an normal instrument bass playing at same time). It works for the first time, but once I replay the song, it does not play the first note.

However, it works when I don't place the first note on the row 0. If I just put it to row 1, the note plays normally. Also, when I press a key with the VST selected in the pattern window, it won't play anything during the first keypress. On the second it works again. This problem persists even if I move the notes away from row 0.

Other VSTis I have tried don't have a problem like this. Have any others here encountered this problem with another VSTi, or DSK Brass if somebody uses it? Could this just be an incompatibility issue, or a bug in MPT (could propably be a bug in the VSTi)?

I hope I made some sense with my explanation. I didn't know if this was a bug with MPT so I didn't post this to the bug section.

Saga Musix · February 12, 2009, 13:56:28

It sounds like a bug in the VSTi to me, have you tried any other hosts than MPT?

Nahkranoth · February 12, 2009, 14:08:10

Once I had the same problem, only that it was Superwave P8. I had relatively slow machine for P8 at that time. Now there's no such problem, but I wish to know if it's a bug or something.
It may be bug with OMPT, have you tried more recent version?
Or it is due to these 2 plugins created with old version of some synthedit modules, which are buggy.

psishock · February 12, 2009, 15:16:43

Downloaded DSK Brass.
Tested with the recent OMPT (.53beta), it bugs as Dictator described.
Loaded the plugin inside Chainer and tested it again, it behaves the same as without.
Tested with Renoise, it works perfectly, without bugging.
Conclusion: the bug is somewhere in OMPT.

Saga Musix · February 12, 2009, 17:37:39

Have you tried the "panic" button in renoise (which should equal openmpt's "stop" button)?

psishock · February 12, 2009, 18:26:39

lemme try....
yea, works just fine even after the panic "hard-cut".

LPChip · February 12, 2009, 22:34:31

I expect this to be because OpenMPT closes the sounddevice when you stop, so an initialise is being executed. The panic button on renoise doesn't have to trigger this initialise when you play the song or notes, but can do that right after you pressed panic.

I bet this problem wouldn't exist if the sounddevice stays open.

Try playing a note in the instrument tab to open the sounddevice. First note should probably not play, but the second would.

Then play the song. The sounddevice is still open and there shouldn't be an initialise routine fired.

psishock · February 13, 2009, 04:23:42

Correct, LP.

Dictator · February 13, 2009, 08:33:24

Quote from: "LPChip"Try playing a note in the instrument tab to open the sounddevice. First note should probably not play, but the second would.

Then play the song. The sounddevice is still open and there shouldn't be an initialise routine fired.

Right. Is there any way to get around this without having to play the instrument each time before starting the song?

uncloned · February 13, 2009, 11:29:08

what about starting off with a scratch pattern that contains 1 note?

if you use a wav editor like audacity before publishing the scratch pattern can be removed easily.

Saga Musix · February 13, 2009, 15:47:44

Quote from: "Dictator"
Quote from: "LPChip"Try playing a note in the instrument tab to open the sounddevice. First note should probably not play, but the second would.

Then play the song. The sounddevice is still open and there shouldn't be an initialise routine fired.
Right. Is there any way to get around this without having to play the instrument each time before starting the song?

I was thinking about adding a "renoise-alike" mode (which does not stop sound output, but just cuts all notes when you stop the tune), but I haven't done that yet.

Harbinger · February 14, 2009, 00:55:48

I have used alot of the DSK VSTi's, they are excellent but they're buggy, at least for MPT. They may work just fine on other hosts. The main problem i have is stopping sounds mid-play with a key press.

uncloned · February 14, 2009, 01:46:01

that problem - continuing to sound after stopping, is so common that Sonar has a "panic button" to force midi devices to stop.