Private Sub WaveIn_DataAvailable(ByVal sender As System.Object, ByVal e As NAudio.Wave.WaveInEventArgs) Handles WaveIn.DataAvailable
For i = 0 To e.BytesRecorded / 2 - 1
e.Buffer(i) = e.Buffer(2 * i) ' keep the left channel
' or, e.Buffer(i)=e.Buffer(2*i+1), to keep the right channel
Next
WaveWriter.Write(e.Buffer, 0, e.BytesRecorded / 2)
End Sub long dl;
using (var vor = new NVorbis.NAudioSupport.VorbisWaveReader(@"D:\voice.ogg"))
using (var wav = new NAudio.Wave.WaveOut())
{
wav.Init(vor);
dl = vor.Length;
wav.Play();
while (wav.PlaybackState != NAudio.Wave.PlaybackState.Stopped)
{
if (wav.GetPosition() > dl)
{
wav.Stop();
}
Thread.Sleep(100);
}
}
using System;
using System.Collections.Generic;
using System.IO;
using System.Windows.Forms;
using NAudio.Midi;
namespace MidiToCode
{
public static class Program
{
public static void Main()
{
foreach (FileInfo midiFile in new DirectoryInfo(Path.Combine(Application.StartupPath, "Input")).GetFiles("*.mid"))
{
string name = Path.GetFileNameWithoutExtension(midiFile.Name);
StreamWriter file = File.CreateText(Path.Combine(Application.StartupPath, "Output", "Song_" + name + ".h"));
List<string>[] notes = new List<string>[6];
for (int channel = 0; channel < 6; channel++)
{
notes[channel] = new List<string>();
MidiFile midi = new MidiFile(midiFile.FullName);
int noteStart = 0, noteEnd = 0, noteNumber = 0;
bool recording = false;
foreach (MidiEvent note in midi.Events[0])
{
if (note.Channel - 1 == channel)
{
if (note.CommandCode == MidiCommandCode.NoteOff)
{
noteStart = (int)(note.AbsoluteTime - note.DeltaTime);
if (noteStart > 65535 || noteEnd > 65535) throw new Exception();
}
else if (note.CommandCode == MidiCommandCode.NoteOn)
{
noteEnd = (int)(note.AbsoluteTime - note.DeltaTime);
noteNumber = (note as NoteOnEvent).NoteNumber;
if (recording)
{
notes[channel].Add
(
"\t" +
"0x" + (noteStart >> 8).ToString("x2") + ", " +
"0x" + (noteStart & 0xff).ToString("x2") + ", " +
"0x" + (noteEnd >> 8).ToString("x2") + ", " +
"0x" + (noteEnd & 0xff).ToString("x2") + ", " +
"0x" + noteNumber.ToString("x2") + ","
);
}
recording = true;
}
}
}
}
file.WriteLine("CreateSong(" + name + ")");
file.WriteLine("{");
for (int i = 0, count = 24; i < 6; i++)
{
file.WriteLine("\t" +
"0x" + (count >> 8).ToString("x2") + ", " +
"0x" + (count & 0xff).ToString("x2") + ", " +
"0x" + (notes[i].Count >> 8).ToString("x2") + ", " +
"0x" + (notes[i].Count & 0xff).ToString("x2") + ",");
count += notes[i].Count * 5;
}
file.WriteLine();
for (int i = 0; i < 6; i++)
{
notes[i].ForEach(itm => file.WriteLine(itm));
}
file.Write("};");
file.Close();
}
}
}
}using (var reader = new MediaFoundationReader("d:\\Projects\\audio.wma"))
{
ISampleProvider sp;
int sourceSamples;
if (reader.WaveFormat.Encoding == WaveFormatEncoding.Pcm)
{
if (reader.WaveFormat.BitsPerSample == 16)
{
sp = new Pcm16BitToSampleProvider(reader);
sourceSamples = (int) (reader.Length/2);
}
else if (reader.WaveFormat.BitsPerSample == 24)
{
sp = new Pcm24BitToSampleProvider(reader);
sourceSamples = (int) (reader.Length/3);
}
else
{
throw new ArgumentException("Currently only 16 or 24 bit PCM samples are supported");
}
}
else if (reader.WaveFormat.Encoding == WaveFormatEncoding.IeeeFloat)
{
sp = new WaveToSampleProvider(reader);
sourceSamples = (int) (reader.Length/4);
}
else
{
throw new ArgumentException("Must be PCM or IEEE float");
}
sampleData = new float[sourceSamples];
int n = sp.Read(sampleData, 0, sourceSamples);
}
float maxValue = 0.0f;
float minValue = 0.0f;
for (var i = 1; i < sampleData.Length; i++)
{
if (sampleData[i] > maxValue)
{
maxValue = sampleData[i];
}
else if (sampleData[i] < minValue)
{
minValue = sampleData[i];
}
}
var coef1Channel = 1/maxValue;
var coef2Channel = -1/minValue;
for (var i = 1; i < sampleData.Length; i++)
{
sampleData[i] = sampleData[i] > 0 ? sampleData[i]*coef1Channel :
sampleData[i]*coef2Channel;
}
}Also, playback should stop automatically when the end of the stream is reached, so the position check should not be necessary.I know, but at this moment I want call stop or pause action ...
Looks like your code is running on the same thread as the UI. Try creating a separate thread to run the code above when running under WPF or WinForms.I think about one, too. But it isn't. When wav.Play(); process skip many bytes and stoped on 105840 (GetPosition()), Any file, .ogg, .wav...
private void wavToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog open = new OpenFileDialog();
open.Filter = "Wave File (*.wav)|*.wav;";
if (open.ShowDialog() != DialogResult.OK) return;
chart1.Series.Add("wave");
chart1.Series["wave"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
chart1.Series["wave"].ChartArea = "ChartArea1";
NAudio.Wave.WaveChannel32 wave = new NAudio.Wave.WaveChannel32(new NAudio.Wave.WaveFileReader(open.FileName));
byte[] buffer = new byte[8192];
int read = 0;
while (wave.Position < wave.Length)
{
read = wave.Read(buffer, 0, 8192);
for (int i = 0; i < read / 4; i++)
{
chart1.Series["wave"].Points.Add(BitConverter.ToSingle(buffer, i * 4));
}
}
}bin freq result.X result.Y
0 0kHz = 0.0895436406135559 0
1 2.756kHz = -0.0815449208021164 -0.072540670633316
2 5.512kHz = 0.0273693520575762 0.0248471423983574
3 8.268kHz = 0.000522108399309218 -0.00102939654607326
4 11.024kHz = -0.00428497046232224 -0.00206405459903181
5 13.78kHz = -0.0028145220130682 0.00431088916957378
6 16.536kHz = 0.00255107693374157 -0.00238887779414654
7 19.292kHz = 0.000449806451797485 1.36718153953552E-05