protected override void PlayNote(Note note, int channel, TimeSpan time)
{
// Only play melody (channel 0) and first note of chords (channel 1)
if (channel <= 1) {
// length is halved because Console.Beep messes up using full length on consecutive notes
Console.Beep((int)note.GetFrequency(), (int)(note.Length.TotalMilliseconds * 0.5));
}
}
protected override void PlayNote(Note note, int channel, TimeSpan time)
{
if (!Muted && channel == 0) {
//Console.WriteLine(lastTime + ": " + note.Type + (note.Sharp ? "#" : "") + "[" + note.Octave + "] " + note.Length);
}
if (normalize) {
note.Volume = Math.Min(Math.Max(note.Volume * normalizeScalar, 0), 1);
}
midi.PlayNote(channel, note, elapsed + note.Length);
}
protected override void PlayNote(Note note, int channel, TimeSpan time)
{
// length is halved because Console.Beep messes up using full length on consecutive notes
Console.Beep((int)note.GetFrequency(), (int)(note.Length.TotalMilliseconds * 0.5));
}
protected override void PlayNote(Note note, int channel, TimeSpan time)
{
// get the pitch relative to the C note in the same octave
var pitch = GetPitch(note);
// get the appropriate C note sound
var sound = SoundBank.Sounds[note.Octave];
// play it pitched up to match the note we're looking for
var source = sound.Play(note.Volume, pitch);
// set the sound source's time out so it'll be ended when the
// note should end instead of playing through to completion
source.TimeOut = now + note.Length;
activeSources.Add(source);
}
private float GetPitch(Note note)
{
// get relative pitch, this is the constant below to the power of the number of semitones between the notes
var c = new Note() { Type = 'c', Octave = note.Octave };
var dist = note.GetStep() - c.GetStep();
return (float)Math.Pow(1.0594630943592952645618252949463, dist);
}
/// <summary>
/// Calculates the note's frequency in Hz.
/// </summary>
/// <param name="tuningNote">Optional note to use for tuning, this is Note.A4 (440 Hz) by default.</param>
/// <returns>Frequency in Hz.</returns>
public double GetFrequency(Note? tuningNote = null)
{
if (!tuningNote.HasValue)
tuningNote = Note.A4;
int dist = GetStep() - tuningNote.Value.GetStep();
double freq = 440 * Math.Pow(1.0594630943592952645618252949463, dist);
return freq;
}
/// <summary>
/// Modifies referenced note up or down in tone by given number of steps. There are 12 steps per octave.
/// </summary>
/// <param name="note">Note to modify.</param>
/// <param name="steps">Steps up or down to modify the note.</param>
protected void Step(ref Note note, int steps)
{
if (steps == 0)
return;
if (steps > 0) {
for (int i = 0; i < steps; i++) {
switch (note.Type) {
case 'a':
if (!note.Sharp)
note.Sharp = true;
else {
note.Type = 'b';
note.Sharp = false;
}
break;
case 'b':
note.Type = 'c';
note.Octave++;
break;
case 'c':
if (!note.Sharp)
note.Sharp = true;
else {
note.Type = 'd';
note.Sharp = false;
}
break;
case 'd':
if (!note.Sharp)
note.Sharp = true;
else {
note.Type = 'e';
note.Sharp = false;
}
break;
case 'e':
note.Type = 'f';
break;
case 'f':
if (!note.Sharp)
note.Sharp = true;
else {
note.Type = 'g';
note.Sharp = false;
}
break;
case 'g':
if (!note.Sharp)
note.Sharp = true;
else {
note.Type = 'a';
note.Sharp = false;
}
break;
}
}
}
else {
for (int i = 0; i < Math.Abs(steps); i++) {
switch (note.Type) {
case 'a':
if (note.Sharp)
note.Sharp = false;
else {
note.Type = 'g';
note.Sharp = true;
}
break;
case 'b':
note.Type = 'a';
note.Sharp = true;
break;
case 'c':
if (note.Sharp)
note.Sharp = false;
else {
note.Type = 'b';
note.Octave--;
}
break;
case 'd':
if (note.Sharp)
note.Sharp = false;
else {
note.Type = 'c';
note.Sharp = true;
}
break;
case 'e':
note.Type = 'd';
note.Sharp = true;
break;
case 'f':
if (note.Sharp)
note.Sharp = false;
else {
note.Type = 'e';
}
break;
case 'g':
if (note.Sharp)
note.Sharp = false;
else {
note.Type = 'f';
note.Sharp = true;
}
break;
}
}
}
}
/// <summary> /// Plays a note on a given channel. /// </summary> /// <param name="note">Note to play.</param> /// <param name="channel">Zero-based channel to play the note on.</param> /// <param name="time">Current playback time.</param> protected abstract void PlayNote(Note note, int channel, TimeSpan time);
protected override void PlayNote(Note note, int channel, TimeSpan time)
{
if (normalize)
note.Volume = Math.Min(Math.Max(note.Volume * normalizeScalar, 0), 1);
midi.PlayNote(channel, note, elapsed + note.Length);
}