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OpenMPT => Help and Questions => Topic started by: pera on May 30, 2006, 18:48:23

Title: how to envelope a vst instrument
Post by: pera on May 30, 2006, 18:48:23
can i do this with openmpt?
because I need make short notes (1/16, 1/32) in the pathern for a bassline..

thanks :)
Title: how to envelope a vst instrument
Post by: LPChip on May 30, 2006, 20:25:05
You can't make a VST Instrument with OpenMPT, but you can use samples with instruments.

As I'm not entirelly sure what you are after, I fail to see if that is enough for what you want to accomplish.
Title: how to envelope a vst instrument
Post by: pera on May 31, 2006, 00:53:13
sorry.. i'm too bad writing in english :P

i'm going to try to explain it again: I want to use VB-1 to make a very simple bassline like this:

C-3 01 .. ..
C-3 01 .. ..
C-3 01 .. ..
..  ..  ..  ..

time 4/4

but each note must be very short (like 1/16)..

I don't want to sample VB-1 C-3 note because i need change some parameter with macros..

u understand me now :S? (if somebody talk spanish it would be more easy :oops:)


thanks
Title: how to envelope a vst instrument
Post by: MisterX on May 31, 2006, 06:03:46
?Puede usted doblar el tempo de su canci?n e incorporar las notas como esto?

C-3 01 .. ..
^^  01 .. ..
C-3 01 .. ..
^^  01 .. ..
etc...

No s? si los instrumentos de VST responden a la nota de comando.

(Can you double the tempo or speed of your song and enter the notes as displayed above, with note cut commands?  I don't know if VST Instruments respond to the note off, though...)
Title: how to envelope a vst instrument
Post by: LPChip on May 31, 2006, 08:08:09
Do I understand correctly that VB-1 is a VSTInstrument? If so, can't you tweak its parameters to emit a short note? Like by using a decay parameter, or sustain/release?

Usually in VSTi's they talk about the following 4 parameters. I'll explain what they do.

Attack: This value will indicate how long it takes before the note goes from silence to full volume. 0 means instantly, and any higher value will make it go longer.
Decay: This value will indicate how long it takes before the note goes from full volume to sustain volume. (put sustain volume to 0 to make it a reverse attack.
Sustain: This value will indicate how much volume the note will have during the "on key hold" event, which takes place after the decay.
Release: This value will indicate how long it takes before the note goes from Sustain volume to silence.

This gives you a standard envelope that looks like this:

 /2\
/   3------4
1            \5

1-2 = attack
2-3 = decay
3-4 = sustain, which will take place until a note-off (==) occurs
4-5 = release


So if you only want short piano like sounds, you could use the following settings:

attack: 0, decay: 3, sustain: 0, release: 0.

Hope this helps.
Title: how to envelope a vst instrument
Post by: speed-goddamn-focus on May 31, 2006, 13:38:11
The note cut effect (SCx) *should* work but I'm not sure if it does. If it doesn't I'd say it's a bug.
Title: how to envelope a vst instrument
Post by: pera on May 31, 2006, 13:55:12
MisterX: Yes I can, but the problem with this is that the pather would be too long. (thank u to talk in spanish =)

LPChip: I know adsr envelope :), but the VB-1 (a freeware bass like synth vst from stainberg) don't have this :P

speed-goddamn-focus: Yes, I tried to use SCx, but only work with samples (with all my vsts in Windows 98, using openmpt R2 .42, this is a bug?? :S)

bye :)
Title: how to envelope a vst instrument
Post by: LPChip on May 31, 2006, 14:18:57
Note cut never worked. Note delay does work!

You should be able to put a note on one channel, and put a note-off on another with note delay:

C-4 04 v64 .00|=== 04 ... SD2

This will work if you use VSTi's on the instrument. If you do them on the channel, make sure you have both channels set to the VSTi. (default procedure is on the instrument, so try if it works first ;))
Title: how to envelope a vst instrument
Post by: pera on May 31, 2006, 14:35:26
yeaaaah   works!! i love this tracker :D

exelent trick lpchip =), thanks to all for helpme!

bye
Title: how to envelope a vst instrument
Post by: LPChip on May 31, 2006, 14:36:23
Np ;) Glad we could help.
Title: how to envelope a vst instrument
Post by: speed-goddamn-focus on May 31, 2006, 16:52:03
Quote from: "pera"MisterX: Yes I can, but the problem with this is that the pather would be too long. (thank u to talk in spanish =)
You could always make more patterns?