public ActionResult GetHarmonicDrill(string doNoteName, int type)
{
L1C7HarmonicDrillType drillType = (L1C7HarmonicDrillType)type;
MemoryStream wavStream = GetHarmonicDrill(doNoteName, drillType);
wavStream.WavToMp3File(out string fileName);
return(Redirect($"~/Temp/{fileName}"));
}
private MemoryStream GetHarmonicDrill(string doNoteName, L1C7HarmonicDrillType drillType)
{
TimeSpan duration = TimeSpan.FromSeconds(3);
string doFileName = NAudioHelper.GetFileNameFromNoteName(doNoteName);
doFileName = Path.GetFileName(doFileName);
int doNoteNumber = int.Parse(doFileName.Split('.')[0]);
ISampleProvider note1, note2;
switch (drillType)
{
// Minor 2nds.
case L1C7HarmonicDrillType.MiFa2nd:
note1 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpMajor3rd, duration);
note2 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpPerfect4th, duration);
break;
case L1C7HarmonicDrillType.TiDo2nd:
note1 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpMajor7th, duration);
note2 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpPerfectOctave, duration);
break;
// Major 7ths.
case L1C7HarmonicDrillType.DoTi7th:
note1 = NAudioHelper.GetSampleProvider(doNoteNumber, duration);
note2 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpMajor7th, duration);
break;
case L1C7HarmonicDrillType.FaMi7th:
note1 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpPerfect4th, duration);
note2 = NAudioHelper.GetSampleProvider(doNoteNumber + Interval.UpMajor10th, duration);
break;
default:
throw new NotSupportedException($"L1C7HarmonicDrillType '{drillType}' is not supported.");
}
MixingSampleProvider msp = new MixingSampleProvider(note1.WaveFormat);
msp.AddMixerInput(note1);
msp.AddMixerInput(note2);
var stwp = new SampleToWaveProvider(msp);
MemoryStream wavStream = new MemoryStream();
WaveFileWriter.WriteWavFileToStream(wavStream, stwp);
wavStream.Position = 0;
return(wavStream);
}
