Understanding Bacal demo midi files

[brunonc]

Hello everybody, I am trying to understand the way Jay Bacal made his midi files. Let us begin with something simle and the following example:an oboe solo named "Britten pan". http://dl.vsl.co.at/downloader.aspx?ID=4528 When you load the midi file in notation software (finale or sibelius) you've got many notes out of an oboe range which make you think about keyswitches. Having a closer look at the midi file with Reaper it looks like there are several simlutaneous such keyswitches and besides these keyswitches have been assigned a velocity (what is the meaning of assigning a velocity to such notes?). I can't understand what 3 simultaneous keyswitches can mean on a solo instrument such as an aboe. Besides these keyswithces are very very numerous and very very close to each other in time. But may be these are not keyswitches. May be some of these are just remains of trials which have no incidence in the final result because they are neither interpreted as a keyswith nor as an oboe not. Or may be I just understand nothing.....

[DG]

Is there a Preset that comes with the MIDI file? If so, did you load it and look?

Perhaps post a link to the file in question so we don't have to search for it, and can maybe explain it. There are various possibilities, so I wouldn't want to send you on a wild goose chase.

DG

[Beat Kaufmann]

@brunonc said:

...I can't understand what 3 simultaneous keyswitches can mean on a solo instrument such as an aboe. Besides these keyswithces are very very numerous and very very close to each other in time. But may be these are not keyswitches. May be some of these are just remains of trials which have no incidence in the final result because they are neither interpreted as a keyswith nor as an oboe not. Or may be I just understand nothing.....

Hello brunonc and welcome in this forum

I've never checked out midi files of Jay but my midi files contain such simultaneous keyswitches as well.

So I assume that those of Jay lead to the same explanation.

As we know the Vienna Instrument offers matrices an within these matrices cells/slots for hosting the articulations/samples

You could find the following keyswitches:

• C0  >>> for selecting Matrix 1
• C#1 >>> for selecting Cell A2 within Matrix 1
• B1 >>> for selecting B of the A/B Switch. This is for choosing diminuendo because in cell2 is the articulation cresc/dim 2s

So if you use more than 1 Matrix you need a keyswitch for selecting the one you want. 

If you are using more than one cell  within the matrices (3 x 4 cells for example) you need two more keyswitches for navigating within the matrix.

And finally some articulations use a selection between an A_ and a B-Sound.

So there can be a couple of up to 4 keyswitches at the same time (or a bit moved in time).

See also http://www.beat-kaufmann.com/vitutorials/vi-tips--tricks-2/index.php#0439199bb1087b909

Even if it is the old VI, the new VI-Player works this way as well...

Beat