Randomize parameter in mixer by script

Hi
I'm working on a project and I want to randomize the pitch parameter on pitch shifter during the gameplay.
What I'm trying to do is use Random.Range to generate a number and use SetFloat to move the parameter. But it didn't move at all.
This is the code I have so far.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using UnityEngine.Audio;
4.  
5. public class randomize : MonoBehaviour {
6.  
7.     public AudioMixer masterMixer;
8.     public float pitchLowRange = .5f;
9.     public float pitchHighRange = 2.0f;
10.  
11.     // Use this for initialization
12.     void Start () {
13.    
14.     }
15.    
16.     // Update is called once per frame
17.     void Update () {
18.         float pitch = Random.Range(pitchLowRange, pitchHighRange);
19.         masterMixer.SetFloat("laserPitch", pitch);
20.     }
21. }
22.  

Help me~

 

Looks like you are getting a new random pitch value and assigning to the exposed AudioMixer property in Update(), which means it's happening every frame - try updating it less frequently, like only when the laser sound is called to Play(), or with an InvokeRepeating(). Also check that the exposed property name on the pitch shift effect matches what you've got in script.

 

Thank you
It's working