Transegr opcode

General
#1

Hello everyone! :sunglasses:
So, I’m trying to use transegr in one of my instrs 'cause I need the release phase starts after I push a certain note on my MIDI device, as madsr or other opcodes ending with r do.
The definition of transegr in the main manual says: 'Constructs a user-definable envelope with extended release segment.’ the opcode works but actually, no extended release really exist. Is this a bug or what?

Cheers,

Matteo

#2

Hi @piripero013 , welcome to the forum. This seems to work fine. The following instrument, although only scheduled to play for 1 second, will play for 3.


schedule(1, 0, 1)

instr 1 
    kres transegr 1, 3, 0, 0
    a1 oscili kres, 600
    outs a1, a1
endin
#3

If I try to use it like you do it works but if I want a more complex envelope it doesn’t.
This is my envelope:

iatt = .003
aEnv transegr 0, iatt, 6, iamp, idur/2, 0, iamp, idur/2-iatt, -2, 0

What I have to do to have the extended release? Usually this parameter must be the last but if I put it there the compiler shows me an error due to incorrect number of parms.

#4

Hmm, that’s true, I can’t seem to get a multi stage envelope to work either?

#5

It’s only a problem of that opcode ‘cause if I use madsr, linsegr, or even expsegr the extended release phase works. I notice that in those opcodes’ definitions there are two parms at the end, named “irel” and “iz”, which don’t appear in transegr

#6

I think the best thing to do at this stage would be to prepare a very simple .csd file and file an issue in the Csound github issue tracker.

#7

All right, I’ll do it asap. Thanks!

#8

Sheesh, that’s my fault! Doing an example for the Github Issue Forum I notice that I included p3 as a parm of the transegr opcode, which is not right while using a midi-trigger note to run the instrument. So if I do this:

	massign 0, "MidiDev"
	alwayson "MidiDev"

instr MidiDev
	itrig notnum
	icheck active "Osc"
	if(itrig==43&&icheck==0)then
		schedule "Osc", 0, -1
	elseif(itrig==43&&icheck>0)then
		turnoff2 "Osc", 0, 1
	endif

endin


instr Osc
	iamp = .5
	iatt = .003
	idec = .25
	irel = 3
	;aEnv expsegr .001, iatt, iamp, idec, iamp*.75, irel, .001
	;aEnv linsegr 0, iatt, iamp, idec, iamp*.75, irel, 0
	aEnv madsr iatt, idec, .75, irel
	;aEnv transegr 0, iatt, 5, iamp, idec, -2, iamp*.75, irel, 0, 0

iTri ftgenonce 0, 0, 4096, 7, 0, 1024, 1, 2048, -1, 1024, 0
aOsc poscil aEnv, 220, iTri

	outs aOsc, aOsc

endin

all my multi-staged envelopes work!
What a noob :sweat_smile:

Cheers to all,

Matteo

#9

Great. I had thought to ask that, but when I failed to get it working myself I figured maybe there is something wrong. Now I have to admit that after all these years I still suck at Csound :rofl: