GP3 Audio player automation midi change guitar

Gig Performer on Windows
1

In audio player on GP3 I loaded a backing track. Can I set automation program changes for example crunch sound on verse and lead sound on chorus to this audio track? Thanks!

2

What sound are you playing in AudioPlayer?
You can put plugins after the audioplayer and mute/unmute them with variations.
The variations you can switch manually or by sending corresponding PC messages.

3

It’s a full backing track of a song.

4

So I do not understand, what do you mean by crunch sound on verse and lead sound on chorus?
Do you want to change plugin sounds when the audioplayer plays the verse and switch to another sound when the audioplayer plays the chorus?

5

With this script you can switch variations automatically:

var  vbar : integer
     DISP : Widget



on BeatChanged (bar : integer, beat : integer, subbeat : integer)
 if beat == 0 then
    vbar =  0
 end   

 if beat % 4 == 0
  then vbar = vbar +1 
 end   
 
 
 
 DISP.SetWidgetLabel(IntToString(vbar)+"."+IntToString((beat%4)+1))

if vbar == 1 then
    SetVariation(0)
 elsif vbar == 5 then
    SetVariation(1)
 elsif vbar == 9 then
    SetVariation(2)
 end

BeatChanged.gig (4.7 KB)

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6

Yes. Change sound as you mentioned. Thanks. I will try the script.

7

Hi Paul! What if I need to change it before the beat? Can I use something like beat 4.5?

8

You could double the tempo :wink:

9

Good idea! thanks

10

I am working on a more sophisticated version, but doubling the time is a good workaround.

1 Like
11

As a guitarist I need to push it ahead of beat sometimes.

12

Here you go
Automate_Variation.gig (11.8 KB)

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Bildschirmfoto 2021-04-21 um 08.37.041312×834 167 KB 

var nm : NoteMessage
    VTRIGGER :MidiInBlock
    TVAR : MidiInBlock
    vbpm : double
    BEAT_DISP : Widget
    vnn : Integer

initialization
 nm = MakeNoteMessage(C3, 100)
 vbpm = GetBPM()
end

on BeatChanged(bar : integer, beat : integer, subbeat : integer)
 BEAT_DISP.SetWidgetLabel(beat+1)
 if beat == 0 then
    SendNow(VTRIGGER, nm)
 elsif beat == 3 then
    SendLater(VTRIGGER, Transpose(nm,1), 60.0/vbpm*1000/4)
 elsif beat == 16 then
    SendNow(VTRIGGER, Transpose(nm,2))
 elsif beat == 22 then
    SendNow(VTRIGGER, Transpose(nm,3))
 elsif beat == 28 then
  EnablePlayhead(false)
 end  
end 


On NoteEvent(m : NoteMessage) from TVAR
 vnn = GetNoteNumber(m)-C3
 SetVariation(vnn)
End

The trick is to use virtual Midi.
The on BeatChanged callback sends midi message just in time or later to the virtual midi out.
On mac you can use IAC on windows there is similar.
You have to enable this MIDI Ports in the options window so Gig Performer can see that Midi Ports.

In the OnNoteEvent callback this received note number is parsed and the corresponding Variation is set.

The secret is in using SendLater() to schedule a Midi Event in milliseconds.
Because the bpm is detected it is working with different bpm values.

This expression determines how much later it is sent

60.0/vbpm*1000/4
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13

You are GENIUS!

4 Likes