Plane engine sound change when press key? (c#)

Questions & Answers
1

Heyyooo

I am trying to make a game, where there is a plane, and the engine is Emitting a sound from a sound source, when i press W + Shift the plane accelerates. I want to use another sound for the engine when i press W + Shift and when i let go, it goes back to the regular sound. but so far i couldn’t do it. Help?

2

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]

public class Example : MonoBehaviour
{
	public AudioClip sound1;
	public AudioClip sound2;
	
	void Update()
	{
		if(Input.GetKey (KeyCode.W) && Input.GetKey (KeyCode.LeftShift))
		{
			audio.clip = sound1;
		}
		
		else
			audio.clip = sound2;
		
		if(!audio.isPlaying)
			audio.Play ();
	}
}