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Sending MIDI notes - polyphonic (Chords)

This is a follow up to my earlier question (closed) here
http://www.experts-exchange.com/Programming/Languages/Visual_Basic/Q_28562826.html

I got it to play single notes, thanks to Qlemo.
The notes play one-after-the-other. ie. monophonically. I'd like to play several notes at the same time (polyphonic). So I did this to test (lines 10 and 11)

Sub PlayMIDI(voiceNum, noteNum, Duration)
    Dim Note As Long
    Dim i As Integer
    
    On Error Resume Next
    midiOutShortMsg hMidiOut, RGB(192, voiceNum - 1, 127)
    lanote = 0 + CLng(noteNum)

    midiOutShortMsg hMidiOut, RGB(144, lanote, 127)
    midiOutShortMsg hMidiOut, RGB(144, lanote + 3, 127)
    midiOutShortMsg hMidiOut, RGB(144, lanote + 5, 127)
    
    Sleep (Duration)
    midiOutShortMsg hMidiOut, RGB(128, lanote, 127)
    
 End Sub

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And yes, it plays a chord. But if I fire off individual notes by calling that sub on each note the next note doesn't start until the previous one has ended.

It's the same if I comment out the Note Off event
midiOutShortMsg hMidiOut, RGB(128, lanote, 127)

So what I'm after is, to be able to fire off a Note via a Sub as above but for the Notes playing to continue until the Note Off event.

Does anyone know how please?

ASKER CERTIFIED SOLUTION

Qlemo

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hindersaliva

ASKER

Hey, I got it to work.

I have a counter that counts each tick. That's measure > beat > tick. See?

Sub PlayMIDIList()

    Dim iMeasure As Integer
    Dim iBeat As Integer
    Dim iTick As Integer
    Dim strSongPosition As String
    Dim iRow As Integer
    Dim intMsg As Integer
    Dim intNote As Integer
    Dim intVelocity As Integer
    
    On Error Resume Next
    
    midiOutOpen hMidiOut, 0, 0, 0, 0

    For iMeasure = 1 To 16
        For iBeat = 1 To 4
            For iTick = 1 To 384
                strSongPosition = Trim(Str(iMeasure)) + "." + Trim(Str(iBeat)) + "." + Trim(Str(iTick))

                For iRow = 6 To 50
                    If Cells(iRow, 2).Value = strSongPosition Then
                        intMsg = Cells(iRow, 3).Value       'Note on/Note off
                        intNote = Cells(iRow, 5).Value      'Note no
                        intVelocity = 127                   'Key velocity (=volume)
                        midiOutShortMsg hMidiOut, RGB(intMsg, intNote, intVelocity)

                    End If
                Next iRow

            Next iTick
        Next iBeat
    Next iMeasure
    
    midiOutClose hMidiOut
   
 End Sub

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My MIDI data looks like this

SongPosition      Msg      Voice      Note
1.1.1        144      1        60
3.2.1        144      1        64
8.4.38        128      1        64
8.1.384        128      1        60
10.1.1        144      1        70
10.1.1        144      1        74
10.1.1        144      1        77
14.1.380        128      1        70
14.1.380        128      1        74
14.1.380        128      1        77

Qlemo

As I said :D

hindersaliva

ASKER

Yes. Thanks Qlemo.