Unity5のグループに対するオーディオの設定

SetVolumes.cs

using UnityEngine;
using System.Collections;

public class SetVolumes : MonoBehaviour {

	[SerializeField]
	UnityEngine.Audio.AudioMixer mixer;

	public float masterVolume
	{
		set{ mixer.SetFloat("MasterVolume", Mathf.Lerp(-80, 0, value)); }
	}
}