private void btnRecord_Click(object sender, EventArgs e)
{
var waveIn = new WaveIn();
waveIn.WaveFormat = new WaveFormat();
waveIn.DataAvailable += OnDataAvailable;
waveIn.RecordingStopped += OnRecordingStopped;
Decoder = new WaveMp3FileDecoder();
Decoder.DetectLevelThreshold = 0;
Decoder.InitRealtimeMode(waveIn.WaveFormat.Channels, waveIn.WaveFormat.BitsPerSample, waveIn.WaveFormat.SampleRate, 200,
(PitchTracker tracker, PitchRecord record) =>
{
tbFrequency.Text = record.Pitch.ToString();
tbMidiId.Text = record.MidiNote.ToString();
tbNote.Text = MusicalTemperament.MidiNoteToNoteName(record.MidiNote);
//tbId13.Text = MusicalHmmData.MidiNoteToHmmMidiNote(record.MidiNote).ToString();
});
waveIn.StartRecording();
}
private void btnMicFollowing_Click(object sender, EventArgs e)
{
_musicFollower = new MusicalFollower(_musicHmmModelOnline, (int)nudTempo.Value, _musicXmlDecoder.BeatType, _musicXmlDecoder.Beats);
_audioDecoder = new WaveMp3FileDecoder();
_audioDecoder.DetectLevelThreshold = AudioUtils.DecibelToPower(tbSoundAmplitude.Value);
_waveIn = new WaveIn();
_waveIn.WaveFormat = new WaveFormat(44100, 1);
_waveIn.DataAvailable += OnDataAvailable;
_waveIn.RecordingStopped += OnRecordingStopped;
var stopwatch = new Stopwatch();
TimeSpan oldTime = new TimeSpan();
lblPitchsCount.Text = "0";
_audioDecoder.InitRealtimeMode(_waveIn.WaveFormat.Channels, _waveIn.WaveFormat.BitsPerSample, _waveIn.WaveFormat.SampleRate,
_musicFollower.GetTimerInterval((int)nudTempo.Value),
(PitchTracker tracker, PitchRecord record) =>
{
lblPitchsCount.Text = (int.Parse(lblPitchsCount.Text) + 1).ToString();
lblTime.Text = (stopwatch.Elapsed - oldTime).ToString();
oldTime = stopwatch.Elapsed;
tbCurNoteName.Text = MusicalTemperament.MidiNoteToNoteName(record.MidiNote);
tbCurMidiNote.Text = record.MidiNote <= -1 ? "-" : record.MidiNote.ToString();
tbCurHmmMidiNote.Text = _musicHmmData.MidiNoteToHmmMidiNote(record.MidiNote).ToString();
FollowObservation(record.MidiNote);
});
_waveIn.StartRecording();
stopwatch.Start();
oldTime = stopwatch.Elapsed;
timerMetronome.Interval = _musicFollower.GetMetronomeInterval((int)nudTempo.Value);
timerMetronome.Start();
btnMicFollowing.Text = "Stop";
}