Adding a Close sound to Door Script (help)

Hello! I am having some difficulty on making the a door close sound play after I close my door.

Currently, the sound is played when my player leaves the door trigger but also when he accidentally knocks on one door or when he steps back in the trigger of another door

I think the sound should only be played when my door animation ends but I don’t know how to do it

If you could take the time to read through this and help me out that’d be great!

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class OpenableDoor : MonoBehaviour
{
    private Animator _animator;

  

    private bool _isInsideTrigger = false;
    private bool ouvrable = false;
    //essayer bruit de claquement de porte
    public AudioClip claquement;
    private AudioSource source;


    // Use this for initialization
    void Start () {
        // le clip audio doit être importé dans le component Audio source du trigger auquel est associé ce script
        source = this.GetComponent<AudioSource>();
        _animator = transform.Find("Door").GetComponent<Animator>();

    }


    void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Player")
        {
            _isInsideTrigger = true;
            ouvrable = true;
        }
    }

    void OnTriggerExit(Collider other)
    {
        if (other.tag == "Player")
        {
            _isInsideTrigger = false;
            _animator.SetBool("open", false);
            ouvrable = false;
            //ici bruit de fermeture de porte, le bruit apparait à 2 secondes dans le clip
            source.PlayOneShot(claquement, 0.9f);
           

        }
    }

  
    // Update is called once per frame
    void Update () {

       
            if(Input.GetKeyDown(KeyCode.E) && ouvrable==true)
            {
              
                _animator.SetBool("open", true); 
            }
       
    }

     void OnGUI()
    {
        if (_isInsideTrigger)
        {
            GUI.Label(new Rect(Screen.width / 2 - 75, Screen.height - 100, 150, 30), "Press 'E' to open the door");
        }
    }

}

You might look into using AnimationEvents to trigger noises at particular places in your animation. There’s plenty of tutorials on hooking them up.