Got a frame at sample rate 44100, in an MP3 with sample rate 48000. Mp3FileReader does not support sample rate changes

Question

I'm using NAudio in my with my Wpf app first time.

Steps: 1) Recording to MemoryStream using NAudio (C#, Wpf). This is my recording code:

 public void StartRecording()
    {
        this.waveSource = new WaveIn();

        if (Stream == null)
        {
            Stream = new MemoryStream();
        }
        waveSource.WaveFormat = new WaveFormat(44100, 2);
        this.waveFile = new WaveFileWriter(this.Stream, this.waveSource.WaveFormat);
        this.waveSource.DataAvailable += new EventHandler<WaveInEventArgs>(waveSource_DataAvailable);
        this.waveSource.RecordingStopped += new EventHandler<StoppedEventArgs>(waveSource_RecordingStopped);
        this.waveSource.StartRecording();

    }

        private void waveSource_DataAvailable(object sender, WaveInEventArgs e)
    {
        if (waveFile != null)
        {
            waveFile.Write(e.Buffer, 0, e.BytesRecorded);
            int secondsRecorded = (int)(waveFile.Length / waveFile.WaveFormat.AverageBytesPerSecond);

            waveFile.Flush();
        }
    }

    private void waveSource_RecordingStopped(object sender, StoppedEventArgs e)
    {
        if (waveSource != null)
        {
            waveSource.Dispose();
            waveSource = null;
        }

        if (waveFile != null)
        {
            waveFile.Dispose();
            waveFile = null;
        }
    }

2) After stopping it I am inserting array of recorded stream (MemoryStream.ToArray()) to Database (SQLite).

3) Getting from database and converting it to stream to play it:

Stream stream = new MemoryStream(bytes); 
var mp3Reader = new Mp3FileReader(stream);

Mp3FileReader is throwing an exception: Got a frame at sample rate 44100, in an MP3 with sample rate 48000. Mp3FileReader does not support sample rate changes.

Could someone tell me where I am doing wrong, please. I found some questions but they didn't help me. Sorry If there any duplicate question. Thanks

Answer 1

You have saved a WAV file, not an MP3 file, so you need to use WaveFileReader instead of Mp3FileReader in order to play it back.