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@r618

r618/notes2MIDI.cs

Created March 3, 2025 23:54
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few czech folk/children songs -> MIDI basic generator
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notes2MIDI.cs
class Program
{
static void Main(string[] args)
{
string outputFile = args[0];
GenerateMidiFile(outputFile);
Console.WriteLine($"MIDI file saved as {outputFile}");
}
const int NOTE_C4 = 60; // C4
const int NOTE_D4 = 62; // D4
const int NOTE_E4 = 64; // E4
const int NOTE_F4 = 65; // F4
const int NOTE_G4 = 67; // G4
const int NOTE_A4 = 69; // A4
const int NOTE_H4_FLAT = 70;
const int NOTE_H4 = 71; // B4 (H in Czech notation)
const int NOTE_C5 = 72; // C5
// Define note durations (in MIDI ticks)
const int EIGHTH_NOTE = QUARTER_NOTE / 2;
const int QUARTER_NOTE = 480; // Standard MIDI resolution
const int HALF_NOTE = QUARTER_NOTE * 2;
const int HALF_AND_QUARTER_NOTE = QUARTER_NOTE * 3;
const int WHOLE_NOTE = HALF_NOTE * 2;
const int REST = -1; // Using -1 as a sentinel value to indicate a rest
// Define the notes according to the sheet music for Běžela Ovečka
// Format: [note, duration]
static readonly object[] bezela_ovecka_notes = new[]
{
// First line
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_H4, Duration = HALF_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
// Second line
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE }
};
// The notes for "Kočka leze dírou" song
static readonly object[] kocka_leze_notes = new[]
{
// First measure - four eighth notes
new { Note = NOTE_C4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE},
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
// Second measure - two quarter notes
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE},
// Third measure - two quarter notes
new { Note = NOTE_A4, Duration = HALF_NOTE},
new { Note = NOTE_A4, Duration = HALF_NOTE},
// Fourth measure - half note
new { Note = NOTE_G4, Duration = WHOLE_NOTE },
// Fifth measure - two quarter notes
new { Note = NOTE_A4, Duration = HALF_NOTE},
new { Note = NOTE_A4, Duration = HALF_NOTE},
// Sixth measure - half note
new { Note = NOTE_G4, Duration = WHOLE_NOTE },
// Seventh measure - four quarter notes
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE},
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
// Eighth measure - two quarter notes
new { Note = NOTE_E4, Duration = HALF_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE},
// Ninth measure - two quarter notes
new { Note = NOTE_D4, Duration = HALF_NOTE},
new { Note = NOTE_D4, Duration = HALF_NOTE},
// Tenth measure - half note (with repeat sign)
new { Note = NOTE_G4, Duration = WHOLE_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE},
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
// Eighth measure - two quarter notes
new { Note = NOTE_E4, Duration = HALF_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE},
// Ninth measure - two quarter notes
new { Note = NOTE_D4, Duration = HALF_NOTE},
new { Note = NOTE_D4, Duration = HALF_NOTE},
// Final measure after repeat - half note
new { Note = NOTE_C4, Duration = WHOLE_NOTE }
};
static readonly object[] prsi_prsi_notes = new[]
{
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_C4, Duration = QUARTER_NOTE },
new { Note = NOTE_C4, Duration = QUARTER_NOTE },
new { Note = NOTE_C4, Duration = HALF_NOTE },
};
static readonly object[] pec_nam_spadla_notes = new[]
{
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = HALF_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE },
};
static readonly object[] tluce_bubenicek_notes = new[]
{
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_C4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = EIGHTH_NOTE },
new { Note = NOTE_D4, Duration = EIGHTH_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = REST, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_C5, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_D4, Duration = EIGHTH_NOTE },
new { Note = NOTE_D4, Duration = EIGHTH_NOTE },
new { Note = NOTE_C4, Duration = QUARTER_NOTE },
new { Note = REST, Duration = QUARTER_NOTE },
new { Note = NOTE_H4_FLAT, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_A4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_H4_FLAT, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_A4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = EIGHTH_NOTE },
new { Note = NOTE_C4, Duration = EIGHTH_NOTE },
new { Note = NOTE_C4, Duration = EIGHTH_NOTE },
new { Note = NOTE_D4, Duration = EIGHTH_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = REST, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_G4, Duration = EIGHTH_NOTE },
new { Note = NOTE_C5, Duration = EIGHTH_NOTE },
new { Note = NOTE_E4, Duration = EIGHTH_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = REST, Duration = QUARTER_NOTE },
};
static readonly object[] komari_se_zenili_notes = new[]
{
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_D4, Duration = HALF_NOTE },
new { Note = NOTE_F4, Duration = HALF_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = HALF_NOTE },
new { Note = NOTE_D4, Duration = HALF_NOTE },
new { Note = NOTE_F4, Duration = HALF_NOTE },
new { Note = NOTE_E4, Duration = QUARTER_NOTE },
new { Note = NOTE_D4, Duration = QUARTER_NOTE },
new { Note = NOTE_C4, Duration = HALF_NOTE },
new { Note = NOTE_C4, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = HALF_NOTE },
new { Note = NOTE_A4, Duration = HALF_AND_QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE },
new { Note = NOTE_F4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = WHOLE_NOTE },
new { Note = NOTE_C4, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = HALF_NOTE },
new { Note = NOTE_A4, Duration = HALF_AND_QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_C5, Duration = QUARTER_NOTE },
new { Note = NOTE_H4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = HALF_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_A4, Duration = QUARTER_NOTE },
new { Note = NOTE_G4, Duration = QUARTER_NOTE },
new { Note = NOTE_F4, Duration = QUARTER_NOTE },
new { Note = NOTE_E4, Duration = HALF_NOTE },
new { Note = NOTE_D4, Duration = HALF_NOTE },
new { Note = NOTE_C4, Duration = WHOLE_NOTE },
};
static void GenerateMidiFile(string outputPath)
{
// Create a new MIDI file with one track
MidiEventCollection midiEvents = new MidiEventCollection(1, QUARTER_NOTE);
midiEvents.AddTrack();
midiEvents.AddTrack();
// Add tempo and time signature info
long absoluteTime = 0;
// Set tempo to 120 BPM
var tempoEvent = new TempoEvent(500000, absoluteTime); // 500000 microseconds = 120 BPM
midiEvents[0].Add(tempoEvent);
// Set time signature to 4/4
var timeSignature = new TimeSignatureEvent(absoluteTime, 4, 4, 24, 8);
midiEvents[0].Add(timeSignature);
// Set instrument to Acoustic Grand Piano (General MIDI program 0)
var patchEvent = new PatchChangeEvent(absoluteTime, 1, 0);
midiEvents[1].Add(patchEvent);
// Add notes to the MIDI file
absoluteTime = 0;
foreach (dynamic note in komari_se_zenili_notes)
{
if (note.Note != REST)
{
// Note On event
var noteOnEvent = new NoteOnEvent(absoluteTime, 1, note.Note, 100, note.Duration);
midiEvents[1].Add(noteOnEvent);
// Note Off event (immediately after the note duration)
var noteOffEvent = new NoteEvent(absoluteTime + note.Duration, 1, MidiCommandCode.NoteOff, note.Note, 0);
midiEvents[1].Add(noteOffEvent);
}
// Move absolute time forward by the note duration
absoluteTime += note.Duration;
}
// Add end of track event
var endOfTrackEvent = new MetaEvent(MetaEventType.EndTrack, 0, absoluteTime);
midiEvents[1].Add(endOfTrackEvent);
// Save MIDI file
MidiFile.Export(outputPath, midiEvents);
}
}
@r618
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r618 commented Mar 3, 2025 

2. Běžela ovečka hore do kopečka
3. Kočka leze dírou, pes oknem
4. Prší, prší
5. Pec nám spadla
6. Tluče bubeníček
7. Komáři se ženili

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