naudio

问题 I am using NAudio to attempt to convert Linear16 PCM wav files that come out of a 3rd party Text-To-Speech API to G711 8-bit 8-khz MULAW that will work as a telephony prompt. Using techniques found in the library authors documentation and some stack overflow posts and specifically following suggestion to do a 2 step conversion. dynamic foo = JsonConvert.DeserializeObject<dynamic>(result); byte[] decoded = Convert.FromBase64String(foo.audioContent.ToString()); WaveFormat newFormat = new

问题 I was trying to adjust playback volume level of microphone; but unfortunately I couldn't. I can control recording volume of microphone by using NAudio library but I want to control playback volume. Is there any way to control microphone playback volume on windows 7. Either C++ or C# solution is acceptable for me. Here are some attempts to solve my problem: http://www.computercabal.com/2010/11/mute-microphone-from-c-on-windows.html (This guy wrote a small library that can mute microphone

问题 I've just installed Unity 3D because I wanted to make a simple game. There is one problem with the NAudio library though. This is my code: var enumerator = new MMDeviceEnumerator(); if (enumerator.HasDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia)) //<--- crashes here { //... } This is literally all Unity says when trying to launch the game: NullReferenceException: Object reference not set to an instance of an object NAudio.CoreAudioApi.MMDeviceEnumerator.HasDefaultAudioEndpoint

问题 I've just installed Unity 3D because I wanted to make a simple game. There is one problem with the NAudio library though. This is my code: var enumerator = new MMDeviceEnumerator(); if (enumerator.HasDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia)) //<--- crashes here { //... } This is literally all Unity says when trying to launch the game: NullReferenceException: Object reference not set to an instance of an object NAudio.CoreAudioApi.MMDeviceEnumerator.HasDefaultAudioEndpoint

问题 I am making an audio recorded using NAudio in C# and i need to remove the stop button used and simply stop the recording on its own after some time delay. The code for the record event is private void cmbRecord_Click(object sender, EventArgs e) { outputFilename = "file address"; waveInStream = new WaveIn(44100,2); writer = new WaveFileWriter(outputFilename, waveInStream.WaveFormat); waveInStream.DataAvailable += new EventHandler<WaveInEventArgs>(waveInStream_DataAvailable); waveInStream

问题 Naudio Library: http://naudio.codeplex.com/ I'm trying to convert an MP3 file to a WAV file, but I've run in to a small error. I know what's going wrong, but I don't really know how to go about fixing it. Here's the piece of code I'm running: private void button1_Click(object sender, EventArgs e) { using(Mp3FileReader reader = new Mp3FileReader(@"path\to\MP3")) { using(WaveFileWriter writer = new WaveFileWriter(@"C:\test.wav", new WaveFormat())) { int counter = 0; while(reader.Read(test,

问题 I want to save the incoming stream data to a WAV file on my hard disk drive. How can I change the code below to be able to record the stream into a valid WAV file? From the demo here: private void StreamMP3(object state) { this.fullyDownloaded = false; string url = (string)state; webRequest = (HttpWebRequest)WebRequest.Create(url); HttpWebResponse resp = null; try { resp = (HttpWebResponse)webRequest.GetResponse(); } catch(WebException e) { if (e.Status != WebExceptionStatus.RequestCanceled)

问题 I'm trying to play raw pcm data delivered from ohLibSpotify c# library (https://github.com/openhome/ohLibSpotify). I get the data in the following callback: public void MusicDeliveryCallback(SpotifySession session, AudioFormat format, IntPtr frames, int num_frames) { //EXAMPLE DATA //format.channels = 2, format.samplerate = 44100, format.sample_type = Int16NativeEndian //frames = ? //num_frames = 2048 } Now i want to directly play the received data with NAudio (http://naudio.codeplex.com/).

问题 given that I have a .wav file, what would be best way to read its Bit rate property in C#. I have tried Shell, and asked a question Is "Bit rate" property fixed in index 28? with no asnwers so for. Also I now believe Shell is not the best way to read audio file properties. I have researched on different open source media libraries, cant find much. TagLib#: This one works alright but have two issues. it does not reflect actual bit rate in some cases where bit rate is very low (like less than

问题 i just want to hear what i say to microphone using NAudio and this is my code so far but the problem is i can't hear anything. any help would be appreciated. public partial class frmMain : Form { private WaveIn waveIn; // Gets an audio from microphone private WaveOut waveOut; // Sends audio to speaker private BufferedWaveProvider waveProvider; // Gets an audio from stream public frmMain() { InitializeComponent(); } private void frmMain_Load(object sender, EventArgs e) { waveOut = new WaveOut(