How can access to noise module in runtime?

There are a couple of ways to do this:

1. With the noise module. Set a vibrating profile, and pulse it. See this thread: https://forum.unity.com/threads/how-to-shake-camera-with-cinemachine.485724/#post-3287851. The downside of this method is that you lose the ability to have handheld camera noise at the same time.
2. Since that thread was posted, the CinemachineExtension API became available. That would be the preferred approach. Here is a simplistic example, to shake the camera continuously. Modify it to make it do a pulse instead:

Code (CSharp):

1. using UnityEngine;
2. using Cinemachine;
3.  
4. /// <summary>
5. /// An add-on module for Cinemachine to shake the camera
6. /// </summary>
7. [ExecuteInEditMode] [SaveDuringPlay] [AddComponentMenu("")] // Hide in menu
8. public class CameraShake : CinemachineExtension
9. {
10.     [Tooltip("Amplitude of the shake")]
11.     public float m_Range = 0.5f;
12.  
13.     protected override void PostPipelineStageCallback(
14.         CinemachineVirtualCameraBase vcam,
15.         CinemachineCore.Stage stage, ref CameraState state, float deltaTime)
16.     {
17.         if (stage == CinemachineCore.Stage.Body)
18.         {
19.             Vector3 shakeAmount = GetOffset();
20.             state.PositionCorrection += shakeAmount;
21.         }
22.     }
23.  
24.     Vector3 GetOffset()
25.     {
26.         return new Vector3(
27.             Random.Range(-m_Range, m_Range),
28.             Random.Range(-m_Range, m_Range),
29.             Random.Range(-m_Range, m_Range));
30.     }
31. }
32.