/// <summary>
/// Converts sound file to List of arrays. One array - data for 1 second
/// </summary>
/// <param name="v"></param>
internal static List <float[]> GetArraysFromFile(string inFile)
{
var res = new List <float[]>();
if (!File.Exists(inFile))
{
Program.LogError("No file " + inFile); return(null);
}
using (var reader = new AudioFileReader(inFile))
{
Program.LogInfo("TotalTime:" + reader.TotalTime);
Program.LogInfo("Length:" + reader.Length);
Program.LogInfo("Volume:" + reader.Volume);
var waveFormat = reader.WaveFormat;
Program.LogInfo("SampleRate:" + waveFormat.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + waveFormat.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + waveFormat.BitsPerSample);
Program.LogInfo("BlockAlign:" + waveFormat.BlockAlign);
Program.LogInfo("Channels:" + waveFormat.Channels);
Program.LogInfo("Encoding:" + waveFormat.Encoding);
int valuesPerSecond = (int)(reader.Length / reader.TotalTime.TotalSeconds);
Program.LogInfo("Values per second:" + valuesPerSecond);
var resampler = new WdlResamplingSampleProvider(reader, 44100);
var wp = new SampleToWaveProvider(reader);
var rdr = wp.ToSampleProvider();
var wf2 = rdr.WaveFormat;
Program.LogInfo("SampleRate:" + wf2.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + wf2.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + wf2.BitsPerSample);
Program.LogInfo("BlockAlign:" + wf2.BlockAlign);
Program.LogInfo("Channels:" + wf2.Channels);
Program.LogInfo("Encoding:" + wf2.Encoding);
// 1 sec length buffer
var buf = new float[rdr.WaveFormat.SampleRate * rdr.WaveFormat.Channels];
while (true)
{
int read = rdr.Read(buf, 0, buf.Length);
if (read > 0)
{
// only 1 channel
res.Add(buf.Where((x, i) => i % 2 == 0).ToArray());
}
else
{
break;
}
}
return(res);
}
}
/// <summary>
/// demo function fo reading and saving sound files
/// </summary>
/// <param name="testWavFile"></param>
/// <param name="testOutWavFile"></param>
public static void ReadAndWriteSound(string testWavFile, string testOutWavFile)
{
string testFile = testWavFile;
if (!File.Exists(testFile))
{
Program.LogError("No file " + testFile); return;
}
using (var reader = new AudioFileReader(testFile))
{
Program.LogInfo("TotalTime:" + reader.TotalTime);
Program.LogInfo("Length:" + reader.Length);
Program.LogInfo("Volume:" + reader.Volume);
var waveFormat = reader.WaveFormat;
Program.LogInfo("SampleRate:" + waveFormat.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + waveFormat.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + waveFormat.BitsPerSample);
Program.LogInfo("BlockAlign:" + waveFormat.BlockAlign);
Program.LogInfo("Channels:" + waveFormat.Channels);
Program.LogInfo("Encoding:" + waveFormat.Encoding);
Program.LogInfo("Values per second:" + reader.Length / reader.TotalTime.TotalSeconds);
var resampler = new WdlResamplingSampleProvider(reader, 44100);
var wp = new SampleToWaveProvider(reader);
var rdr = wp.ToSampleProvider();
var wf2 = rdr.WaveFormat;
Program.LogInfo("SampleRate:" + wf2.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + wf2.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + wf2.BitsPerSample);
Program.LogInfo("BlockAlign:" + wf2.BlockAlign);
Program.LogInfo("Channels:" + wf2.Channels);
Program.LogInfo("Encoding:" + wf2.Encoding);
var wf = WaveFormat.CreateIeeeFloatWaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.Channels);
using (WaveFileWriter writer = new WaveFileWriter(testOutWavFile, wf))
{
var buf = new float[rdr.WaveFormat.SampleRate];
while (true)
{
int read = rdr.Read(buf, 0, buf.Length);
if (read > 0)
{
writer.WriteSamples(buf, 0, read);
}
else
{
break;
}
}
}
}
}
/// <summary>
/// Saving part of sound file
/// </summary>
/// <param name="inFile"></param>
/// <param name="outFile"></param>
/// <param name="startSec"></param>
/// <param name="endSec"></param>
public static void ReadAndSaveSoundPart(string inFile, string outFile, int startSec, int endSec)
{
if (!File.Exists(inFile))
{
Program.LogError("No file " + inFile); return;
}
using (var reader = new AudioFileReader(inFile))
{
Program.LogInfo("TotalTime:" + reader.TotalTime);
Program.LogInfo("Length:" + reader.Length);
Program.LogInfo("Volume:" + reader.Volume);
var waveFormat = reader.WaveFormat;
Program.LogInfo("SampleRate:" + waveFormat.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + waveFormat.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + waveFormat.BitsPerSample);
Program.LogInfo("BlockAlign:" + waveFormat.BlockAlign);
Program.LogInfo("Channels:" + waveFormat.Channels);
Program.LogInfo("Encoding:" + waveFormat.Encoding);
int valuesPerSecond = (int)(reader.Length / reader.TotalTime.TotalSeconds);
Program.LogInfo("Values per second:" + valuesPerSecond);
var resampler = new WdlResamplingSampleProvider(reader, 44100);
var wp = new SampleToWaveProvider(reader);
var rdr = wp.ToSampleProvider();
var wf2 = rdr.WaveFormat;
Program.LogInfo("SampleRate:" + wf2.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + wf2.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + wf2.BitsPerSample);
Program.LogInfo("BlockAlign:" + wf2.BlockAlign);
Program.LogInfo("Channels:" + wf2.Channels);
Program.LogInfo("Encoding:" + wf2.Encoding);
var wf = WaveFormat.CreateIeeeFloatWaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.Channels);
using (WaveFileWriter writer = new WaveFileWriter(outFile, wf))
{
// 1 sec length buffer
var buf = new float[rdr.WaveFormat.SampleRate * rdr.WaveFormat.Channels];
int currentSec = 0;
while (true)
{
if (currentSec > endSec)
{
break;
}
int read = rdr.Read(buf, 0, buf.Length);
if (read > 0)
{
if (currentSec > startSec)
{
writer.WriteSamples(buf, 0, read);
}
}
else
{
break;
}
currentSec++;
}
}
}
}
/// <summary>
/// demo function for reading files
/// </summary>
/// <param name="testWavFile"></param>
/// <param name="testOutWavFile"></param>
/// <param name="testOutWavFile2"></param>
public static void ReadSound(string testWavFile, string testOutWavFile, string testOutWavFile2)
{
string testFile = testWavFile;
if (!File.Exists(testFile))
{
Program.LogError("No file " + testFile); return;
}
string outFile = testOutWavFile2;
using (var reader = new AudioFileReader(testFile))
{
Program.LogInfo("TotalTime:" + reader.TotalTime);
Program.LogInfo("Length:" + reader.Length);
Program.LogInfo("Volume:" + reader.Volume);
var waveFormat = reader.WaveFormat;
Program.LogInfo("SampleRate:" + waveFormat.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + waveFormat.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + waveFormat.BitsPerSample);
Program.LogInfo("BlockAlign:" + waveFormat.BlockAlign);
Program.LogInfo("Channels:" + waveFormat.Channels);
Program.LogInfo("Encoding:" + waveFormat.Encoding);
Program.LogInfo("Values per second:" + reader.Length / reader.TotalTime.TotalSeconds);
var resampler = new WdlResamplingSampleProvider(reader, 44100);
var wp = new SampleToWaveProvider(reader);
var rdr = wp.ToSampleProvider();
var wf2 = rdr.WaveFormat;
Program.LogInfo("SampleRate:" + wf2.SampleRate);
Program.LogInfo("AverageBytesPerSecond:" + wf2.AverageBytesPerSecond);
Program.LogInfo("BitsPerSample:" + wf2.BitsPerSample);
Program.LogInfo("BlockAlign:" + wf2.BlockAlign);
Program.LogInfo("Channels:" + wf2.Channels);
Program.LogInfo("Encoding:" + wf2.Encoding);
//var buf = new float[rdr.WaveFormat.SampleRate* rdr.WaveFormat.BitsPerSample/4*32];
// var buf = new float[1024*32*32];
/*
* var wf = WaveFormat.CreateIeeeFloatWaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.Channels);
*
* Console.WriteLine(buf[1024 * 32 * 2].ToString());
*
* int read = reader.Read(buf, 0, buf.Length);
*
* using (WaveFileWriter writer = new WaveFileWriter("out.wav", wf))
* {
* writer.WriteSamples(buf, 0, buf.Length);
* }
*/
// var wf = WaveFormat.CreateIeeeFloatWaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.Channels);
var wf = WaveFormat.CreateIeeeFloatWaveFormat(rdr.WaveFormat.SampleRate, 1);
var buf = new float[rdr.WaveFormat.SampleRate];
using (WaveFileWriter writer = new WaveFileWriter(testOutWavFile, wf))
{
while (true)
{
int read = rdr.Read(buf, 0, buf.Length);
var buf2 = (new List <float>(buf)).Where((value, index) => index % rdr.WaveFormat.Channels == 0).ToArray();
if (read > 0)
{
writer.WriteSamples(buf2, 0, read / 2);
}
else
{
break;
}
}
}
/*
* // downsample to 22kHz
* var resampler = new WdlResamplingSampleProvider(reader, 44100);
* var wp = new SampleToWaveProvider(reader);
* using (var writer = new WaveFileWriter(outFile, wp.WaveFormat))
* {
* byte[] b = new byte[wp.WaveFormat.AverageBytesPerSecond];
* while (true)
* {
* int read = wp.Read(b, 0, b.Length);
* if (read > 0)
* writer.Write(b, 0, read);
* else
* break;
* }
* }*/
//WaveFileWriter.CreateWaveFile(outFile, );
}
}