public AudioManager() { _sineGenerator = new SineWaveProvider32(); _sineGenerator.SetWaveFormat(16000, 1); // 16kHz mono _sineGenerator.Semitone = (float)Semitone; _sineGenerator.Amplitude = 0.25f; _chordTimer = new DispatcherTimer(); _chordTimer.Tick += new EventHandler(chordTimer_Tick); _chordTimer.Interval = TimeSpan.FromSeconds(0.5); }