One strange Pitch Bend value at 127...

Post by **hubird** » Mon Jul 14, 2003 5:55 am

A Virus patch, a bass in my current song, is reacting in a strange way.
The notes sometimes seem to play an octave higher, and also they seem to sound double, coz the body of the sound is thin then.

Looking for the reason of this, I checked the midi editer, there are notes and pitch bend information.
One value I can't explain, check out the picture:

picture*
[no picture, see follow-up]

As you can see the PB value changes from 68 to 127, then in one jump back to neutral, being 64.
You see the 127 in the second last row of the first value colom?

This happens everytime PB reaches 127.
All other values in that colom show zero.

What does it mean?
Is it normal?

*EDIT:
hehe, how do I include a screen shot in a post?

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Let There Be Music!

[ This Message was edited by: hubird on 2003-07-14 07:05 ]

[ This Message was edited by: hubird on 2003-07-14 09:26 ]

at0m · Post by **at0m** » Mon Jul 14, 2003 6:40 am

just like you display an icon which is non-z standard

Post by **hubird** » Mon Jul 14, 2003 8:25 am

hehe...

anyway, I hoped there was a copy/paste like way, based on text...
BTW...I get a website soon...

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Let There Be Music!

[ This Message was edited by: hubird on 2003-07-14 09:35 ]

Post by **hubird** » Mon Jul 14, 2003 8:32 am

so this is the Midi editor picture

:

1st row:...........0...........64.............Pitch-Bend
.....
.....
3rd last row: ..0..........112............ Pitch-Bend
2nd last row: 127.......127.............Pitch-Bend
Last row :...... 0...........64...............Pitch-Bend

So I was talking about the second row specially

The first number-colom shows just zero's, except the second last one with PB 127.

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Let There Be Music!

[ This Message was edited by: hubird on 2003-07-14 09:51 ]

Stubbe · Post by **Stubbe** » Mon Jul 14, 2003 1:52 pm

I am definitely no expert on MIDI, but I recall something about the MIDI-values going from either 0-127 OR 1-128.
You probably have to set it up in your sequencer somewhere....?

Just my 2 cents...

Cheers
Stubbe

astroman · Post by **astroman** » Mon Jul 14, 2003 5:38 pm

Hubird, I think on the Virus it's just like most synths: you can have a general setup for the values of the modwheel and various settigs in the soundpatches how to interpret those values (modwheel range).
If you just wonder about the jumps then these could be caused by errors of the resistor readout of the wheel - usually it's a mechanical part.

cheers, Tom

Post by **hubird** » Mon Jul 14, 2003 6:27 pm

thanks alot Stub and Astro.
I know what you're talking about Stubbe, I also thought about that.
If I'm right the first clom is supposed to be a non variable one, the second is in fact the variable pitchbend parameter, so I dunno...
Astro, I know about those 'recipients', but they are default.
It's my old Korg 707 wich is sending the pitchbends, I hope it's not my Virus-A wich is getting old.
Have no time now, I come back after checking out things, thanks sofar.

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Let There Be Music!

[ This Message was edited by: hubird on 2003-07-14 19:32 ]

Post by **Neil B** » Tue Jul 15, 2003 8:15 am

Hey Hubird,
How's it going?
I've had a dead pc for a week so I'm just testing my rebuild. My head is a bit scrambled, but I seem to remember somewhere that Pitchbend has 2 values in midi?
Hope I'm not throwing in something misleading

at0m · Post by **at0m** » Tue Jul 15, 2003 9:18 am

You're right NeilB. More details on the usual resource:
http://www.borg.com/~jglatt/tech/midispec.htm

Post by **hubird** » Thu Jul 17, 2003 9:08 am

OK Neil, one step further

great info in that site Atomic/Borg, alas not about the two PB values

samplaire · Post by **samplaire** » Thu Jul 17, 2003 9:57 am

hi there,

When I had my Korg EA1 its knobs were also double controlled. I don't know much of midi specs but I just recorded a knob movement to my cubase then observed the controller window in cubase and if any data was recorded there was a dot before the controller name. This way I discovered this phenomenon for myself

It was a controller and a LSB or MSB or any other nasties (USB? <- no, just joking)

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[ This Message was edited by: samplaire on 2003-07-17 10:58 ]

Post by **hubird** » Thu Jul 17, 2003 10:49 pm

double controlled, yes I know, like with a bank change, you need #0 then #1.
BTW, I discoverd why my Virus behave strange: my PC1600 has a few fader controllers wich constantly change value randomly.
I have to exchange them, there are three of them already

I programmed some faders for the Beast synth, controllers 74 and 75, so with the Virus midi track activated a LFO picked up the random information, and got crazy, hehe.
Atom, how's your PC1600, do you know if I can exchange a fader by myself, I know how so solder?
Hm, probably it's not the faders but some electronics.

_________________
Let There Be Music!

[ This Message was edited by: hubird on 2003-07-18 10:52 ]