Sound Timer

using System;
using UnityEngine;

public class ouyatest : MonoBehaviour
{
    public UILabel lblAxis1;
    public UILabel lblAxis2;
    public AudioSource BeepSource = null;
    private DateTime m_timerSound = DateTime.MinValue;
    private const float SOUND_TIME = 200;

        // Use this for initialization
        void Start()
        {
        Input.ResetInputAxes();
        OuyaExampleCommon.Player = OuyaSDK.OuyaPlayer.player1;
        }

        // Update is called once per frame
        void Update()
        {
        float joy1axis1 =
            Input.GetAxisRaw(string.Format("Joy{0} Axis 1", (int)OuyaExampleCommon.Player));
        float joy1axis2 =
            Input.GetAxisRaw(string.Format("Joy{0} Axis 2", (int)OuyaExampleCommon.Player));
        transform.position = new Vector3(joy1axis1, 0.5f, -joy1axis2);
        lblAxis1.text = joy1axis1.ToString("F5");
        lblAxis2.text = joy1axis2.ToString("F5");

        if (Mathf.Abs(joy1axis1) >= 1.0f ||
            Mathf.Abs(joy1axis2) >= 1.0f ||
            Input.GetKey(KeyCode.RightArrow))
        {
            m_timerSound = DateTime.Now + TimeSpan.FromMilliseconds(SOUND_TIME);
        }

            if (m_timerSound < DateTime.Now)
            {
                audio.volume = 0;
            }
            else
            {
                float elapsed = (float)(m_timerSound - DateTime.Now).TotalMilliseconds;
            audio.volume = (DateTime.Now < m_timerSound) ? 1 : Mathf.Lerp(audio.volume, 0, 1f - elapsed / SOUND_TIME);
            }
        }
}