var tmpTime = 50;

function Update()
{
    if(tmpTime > 0)
    {
        tmpTime = tmpTime - Time.DeltaTime;
    }
}

function OnTriggerEnter(other: Collider)
{
    if (other.tag == "fruit")
    {
         if(tmpTIme <= 0)
        {
            audio.PlayOneShot(piw);
            tmpTime = 50
        }
    }
}