private void FadeThread()
    {
        float volumne;

        _singleSourceVoice.GetVolume(out volumne);
        while (_isFading && volumne > 0)
        {
            volumne -= 0.25f;
            volumne  = volumne < 0 ? 0 : volumne;
            _singleSourceVoice.SetVolume(volumne);
            Thread.Sleep(100);
        }
        Stop();
    }