public static TimeSpan TestChirp(SoundGenerator sg)
{
Stopwatch sw = new Stopwatch();
sw.Start();
sg.AddSimpleTone(440, 2000, false);
sg.AddSineChirp(440, 900, 3000);
sg.AddSimpleTone(900, 2000, false);
sw.Stop();
return(sw.Elapsed);
}
public static string Generate(string melody)
{
SimueCompiler compiler = new SimueCompiler();
var result = compiler.Parse(compiler.Tokenize(melody));
if (result.Errors.Count != 0)
{
var ex = new ArgumentException("Incorrect notation");
ex.Data.Add("Error", GenerationError.IncorrectNotation);
throw ex;
}
if (result.Song.Length > MelodyGeneration.LengthLimit)
{
var ex = new ArgumentException("The melody is too long.");
ex.Data.Add("Error", GenerationError.TooLong);
throw ex;
}
MemoryStream fileStream = new MemoryStream();
WaveFile melodyFile = new WaveFile(Samplerate, Bitness, Channels, fileStream);
SoundGenerator generator = new SoundGenerator(melodyFile);
generator.Volume = 0.3;
Song song = result.Song;
//Generation
foreach (var note in song.Notes)
{
generator.AddSimpleTone(note.Frequency, note.Duration);
}
generator.Save();
fileStream.Position = 0;
string dataUrl = string.Format("data:audio/wav;base64,{0}", Convert.ToBase64String(fileStream.ToArray()));
return(dataUrl);
}
private byte[] GenerateMp3(Song song)
{
if (song.Notes == null)
{
return(null);
}
using (var generatedSongStream = new MemoryStream())
{
var mp3File = new MemoryStream();
var waveFile = new WaveFile(22050, BitDepth.Bit16, 1, generatedSongStream);
var sg = new SoundGenerator(waveFile);
foreach (var note in song.Notes)
{
sg.AddSimpleTone(note.Frequency, note.Duration);
}
sg.Save();
generatedSongStream.Position = 0;
var r = new WaveFileReader(generatedSongStream);
var wr = new LameMP3FileWriter(mp3File, r.WaveFormat, 96);
r.CopyTo(wr);
wr.Flush();
var fileData = mp3File.ToArray();
mp3File.Dispose();
r.Dispose();
wr.Dispose();
return(fileData);
}
}
public static void TestSimple()
{
FileStream file = new FileStream(
Path.Combine(TestResultDir, string.Format("{0} {1}.wav", "Simple tone generation test", Timestamp)),
FileMode.Create);
WaveFile wavefile = new WaveFile(44100, BitDepth.Bit32, 2, file);
SoundGenerator sg = new SoundGenerator(wavefile);
sg.AddSimpleTone(440, 1000);
sg.Save();
file.Close();
file.Dispose();
Console.WriteLine("Simple tone generation test.");
}
public static TimeSpan TestFade(SoundGenerator sg)
{
Stopwatch sw = new Stopwatch();
Random r = new Random();
int n = 100;
var frequencies = Enumerable.Repeat(1, n).Select(frequency => frequency * r.Next(400, 1000)).ToArray();
sw.Start();
for (int i = 0; i < n; i++)
{
sg.AddSimpleTone(frequencies[i], 300, true);
}
sw.Stop();
return(sw.Elapsed);
}
public static void TestClicks()
{
FileStream file = new FileStream(
Path.Combine(TestResultDir, string.Format("{0} {1}.wav", "Click test", Timestamp)),
FileMode.Create);
WaveFile wavefile = new WaveFile(44100, BitDepth.Bit32, 2, file);
SoundGenerator sg = new SoundGenerator(wavefile);
for (int i = 0; i < 100; i++)
{
sg.AddSimpleTone(300, r.Next(100, 600), false);
}
sg.Save();
file.Close();
file.Dispose();
Console.WriteLine("Click test.");
}
public static TimeSpan TestLoran(SoundGenerator sg)
{
Stopwatch sw = new Stopwatch();
sw.Start();
string sounds = "1180 128;1180 128;1180 128;1180 128;1180 128;1115 128;1115 128;1180 128;1180 128;1115 128;1180 128;1115 128;1180 128";
string[] separate = sounds.Split(';');
foreach (string sound in separate)
{
string[] note = sound.Split(' ');
int f = int.Parse(note[0]);
int d = int.Parse(note[1]);
sg.AddSimpleTone(f, d, false);
}
sw.Stop();
return(sw.Elapsed);
}
public static TimeSpan TestRandomChirp(SoundGenerator sg)
{
Stopwatch sw = new Stopwatch();
sw.Start();
double f1 = 0;
double f2 = 440;
Random r = new Random();
for (int i = 0; i < 100; i++)
{
f1 = f2;
f2 = r.Next(300, 4000);
sg.AddSineChirp(f1, f2, 300);
}
sg.AddSimpleTone(f2, 2000, false);
sw.Stop();
return(sw.Elapsed);
}
