public static void Mp3Split(string mp3_source, int[] miliseconds, string[] mp3_destinations, bool removeSilence = false)
{
string name = Path.GetFileNameWithoutExtension(mp3_source);
Mp3FileReader reader = new Mp3FileReader(mp3_source);
//double duration = (reader.TotalTime).TotalMilliseconds;
//int parts = (int)Math.Ceiling((double)duration / miliseconds);
if (reader == null || miliseconds.Length + 1 != mp3_destinations.Length)
{
Output.WriteLine("Mp3 Output destinations missing !");
return;
}
double currentTime;
string destination;
Mp3Frame frame;
for (int i = 0; i < mp3_destinations.Length; i++)
{
currentTime = 0;
destination = mp3_destinations[i];
frame = reader.ReadNextFrame();
Stream memory = new MemoryStream();
while (frame != null && (i >= miliseconds.Length || currentTime < miliseconds[i]))
{
currentTime = (reader.CurrentTime).TotalMilliseconds;
memory.Write(frame.RawData, 0, frame.RawData.Length);
frame = reader.ReadNextFrame();
}
byte[] result;
if (removeSilence)
{
result = Streams.ToArray(Converter.Mp3RemoveSilence(memory));
}
else
{
result = Streams.ToArray(memory);
}
if (File.Exists(destination))
{
File.Delete(destination);
}
if (Path.GetExtension(destination).ToLower().Contains("wav"))
{
Stream temp = Streams.ToMemory(result);
WaveStream pcm = Converter.Mp3ToWAV(temp);
if (pcm == null)
{
continue;
}
//pcm = WavLevel16bit(pcm, 50, short.MaxValue);
//WaveStream pcm2 = pcm;//
pcm = Converter.WavExtrapolate16bit(pcm, SampleRates.f44kHz);
//pcm = WavRemoveSilence2(pcm, 15, 50);
byte[] ba = Converter.WaveStreamToArray(pcm);
//double[] da = Converter.WaveStreamToDoubleArray(pcm, true);
double[] da = Converter.WavToDoubleArray(ba, true);
/// Fundamentals - 85 Hz - 250 Hz
/// Vowels - 350 Hz - 2k Hz
/// Consonants - 1.5k Hz - 4k Hz
da = AMath.FilterBandPassRLC(da, pcm.WaveFormat.SampleRate, 85, 4000, 1);
//da = AMath.FilterBandPassRLC(da, pcm.WaveFormat.SampleRate, 85, 250, 1);
byte[] ba2 = Converter.WavToByteArray(da, true);
pcm = Converter.ArrayToWaveStream(ba2, pcm.WaveFormat);
pcm = WavLevel16bit(pcm, 100, short.MaxValue);
/*double ave = Converter.WavGetAbsAverage16bit(pcm, false);
* double max = Converter.WavGetAbsMax16bit(pcm);
* long countNonZero = WavGetSamplesCount16bit(pcm, 1, -1);
* long countAbsAverage = WavGetSamplesCount16bit(pcm, (int)ave, -(int)ave);
*
*/
if (pcm != null)
{
WaveFileWriter.CreateWaveFile(destination, pcm);
temp.Close();
pcm.Close();
}
}
else
{
FileStream stream = new FileStream(destination, FileMode.Create, FileAccess.Write);
stream.Write(result, 0, result.Length);
stream.Close();
}
memory.Close();
}
reader.Close();
}
