AudioSource.pitch

설명

The pitch of the audio source.

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
public class ExampleClass : MonoBehaviour {
    public int startingPitch = 4;
    public int timeToDecrease = 5;
    AudioSource audio;
    
    void Start() {
    	audio = GetComponent<AudioSource>();
        audio.pitch = startingPitch;
    }
    
    void Update() {
        if (audio.pitch > 0)
            audio.pitch -= Time.deltaTime * startingPitch / timeToDecrease;
    }
}