/// <summary>
/// Add music file to dataset
/// </summary>
/// <param name="pathToFile">path to music file (only mp3 or wav)</param>
public void Add(string pathToFile, SaveInfo saveInfo = SaveInfo.SaveAsMatrix)
{
FileInfo fileInfo = new FileInfo(pathToFile);
Vector sound;
WavMp3 loader = new WavMp3();
int len;
if (!fileInfo.Exists)
{
throw new Exception("The specified file does not exist!");
}
if (fileInfo.Extension == ".mp3")
{
sound = loader.LoadFromMp3(pathToFile);
}
else if (fileInfo.Extension == ".wav")
{
sound = loader.Load(pathToFile);
}
else
{
throw new Exception("unknow format");
}
time = DateTime.Now.Millisecond;
len = TSemple * loader.Fd;
Vector[] semples = Vector.GetWindows(sound, len, len); // Получение непересекающихся отрезков
for (int i = 0; i < semples.Length; i++)
{
Matrix spectrogram = FFT.TimeFrTransformHalf(sound, fr);
spectrogram = spectrogram.TransformMatrix(x => Math.Log(x + Setting.Eps));// Логарифм
if (saveInfo == SaveInfo.SaveAsMatrix)
{
MatrixSaver.Save($"{outDir}\\{NameGen(i)}.matr", spectrogram);
}
else
{
double min = spectrogram.Min();
double max = spectrogram.Max();
Bitmap bitmap = ImgConverter.ToBitmap((spectrogram - min) / (max - min));
bitmap.Save($"{outDir}\\{NameGen(i)}.jpg");
}
}
}
private void BackgroundWorkerSaver_DoWork(object sender, DoWorkEventArgs e)
{
var path = e.Argument as string;
MatrixSaver.Save(_matrixResult, path);
}