public void StartNoise()
        {
            playingState = WhiteNoisePlayingState.Playing;

            audioPlayer.PlayWhiteNoise();
            audioPlayer.SetWhiteNoiseVolume(noiseVolume);
        }
        public void StopNoise()
        {
            playingState = WhiteNoisePlayingState.NotPlaying;
            noiseVolume  = 0.0f;

            audioPlayer.SetWhiteNoiseVolume(noiseVolume);
            audioPlayer.StopWhiteNoise();
        }