I am currently using NAudio to capture the sound and it only creates a wav file. I am looking for a way to encode it to an mp3 before saving the file. I found LAME but when ever i try to add the lame_enc.dll file it says "A reference could not be added. Please make sure the file is accessible, and that is a valid assembly or COM component". Any help would be appreciated.
Easiest way in .Net 4.0:
Use the visual studio Nuget Package manager console:
Install-Package NAudio.Lame
Code Snip: Send speech to a memory stream, then save as mp3:
//reference System.Speech
using System.Speech.Synthesis;
using System.Speech.AudioFormat;
//reference Nuget Package NAudio.Lame
using NAudio.Wave;
using NAudio.Lame;
using (SpeechSynthesizer reader = new SpeechSynthesizer()) {
//set some settings
reader.Volume = 100;
reader.Rate = 0; //medium
//save to memory stream
MemoryStream ms = new MemoryStream();
reader.SetOutputToWaveStream(ms);
//do speaking
reader.Speak("This is a test mp3");
//now convert to mp3 using LameEncoder or shell out to audiograbber
ConvertWavStreamToMp3File(ref ms, "mytest.mp3");
}
public static void ConvertWavStreamToMp3File(ref MemoryStream ms, string savetofilename) {
//rewind to beginning of stream
ms.Seek(0, SeekOrigin.Begin);
using (var retMs = new MemoryStream())
using (var rdr = new WaveFileReader(ms))
using (var wtr = new LameMP3FileWriter(savetofilename, rdr.WaveFormat, LAMEPreset.VBR_90)) {
rdr.CopyTo(wtr);
}
}