Question sound cut

You can make an AudioFader component that progressively lowers the volume of your AudioSource (in Update, at a predefined rate) and then stops it. You can also implement this kind of logic with a coroutine.

Here's a simple example to illustrate this:

Code (CSharp):

1. public class AudioFader : MonoBehaviour
2. {
3.     public AudioSource audioSource;
4.     public float fadeRate = 0.1f;
5.     bool fade = false;
6.  
7.     void Start()
8.     {
9.         if (audioSource == null)
10.         {
11.             audioSource = GetComponent<AudioSource>();
12.         }
13.     }
14.  
15.     void Update()
16.     {
17.         if (fade && audioSource != null)
18.         {
19.             audioSource.volume = Mathf.Max(0, audioSource.volume - fadeRate * Time.deltaTime);
20.             if (audioSource.volume == 0)
21.             {
22.                 audioSource.Stop();
23.                 fade = false;
24.             }
25.         }
26.     }
27.  
28.     public void StartFadeOut()
29.     {
30.         fade = true;
31.     }
32. }