Small script for making audio in Unity3d sound as if they are played on the other side of a phone

gistfile1.cs

using UnityEngine;
using System.Collections;

public class Mobilephonizer : MonoBehaviour 
{
  public AudioClip clip;
	
	[RangeAttribute(0,20000)]
	public int lowFrequencyCutoff = 1000;
	
	[RangeAttribute(0,20000)]
	public int highFrequencyCutoff = 5000;
	
	[RangeAttribute(0,1)]
	public float distortionLevel = 0.6f;
	
	void Start() {
		audioSource = gameObject.AddComponent<AudioSource>();
		highPassFilter = gameObject.AddComponent<AudioHighPassFilter>();
		lowPassFilter = gameObject.AddComponent<AudioLowPassFilter>();
		distortion = gameObject.AddComponent<AudioDistortionFilter>();
		
		highPassFilter.cutoffFrequency = lowFrequencyCutoff;
		lowPassFilter.cutoffFrequency = highFrequencyCutoff;
		distortion.distortionLevel = distortionLevel;
	}
	
	public void Play() 
	{
		audioSource.clip = clip;
		audioSource.Play();
	}
	
	private AudioSource audioSource;
	private AudioHighPassFilter highPassFilter;
	private AudioLowPassFilter lowPassFilter;
	private AudioDistortionFilter distortion;
}

I couldnt get this script to funtion properly. Would you put this in an object/collider with an audio source? It seems ilke a very neat script! I am guessing this is basically obsolete with Unity5...?