听觉触发器：

using System.Collections;
using UnityEngine;
/// <summary>
/// 听觉触发器
/// </summary>
namespace AI.Perception
{
    public class SoundTrigger:AbstractTrigger
    {
        //传播距离
        public float caseDistance = 5;
        //有效时间
        public float lifeTime = 3;
        //初始是否有效
        public bool awakePlay = false;

        public new void Start()
        {
            base.Start();
            //设置类型
            triggerType = TriggerType.Sound;
            this.enabled = awakePlay;
        }

        public void OnEnable()
        {
            StartCoroutine(TimeDown());
        }
        private IEnumerator TimeDown()
        {
            //等待生命期之后
            yield return new WaitForSeconds(lifeTime);
            //禁用当前组件
            this.enabled = false;
        }

        public override void Init(){}
    }
}

听觉感应器：

using UnityEngine;
/// <summary>
/// 听觉感应器
/// </summary>
namespace AI.Perception
{
    public class SoundSensor : AbstractSensor
    {
        //听力范围，听觉距离
        public float hearDistance;
        protected override bool TestTrigger(AbstractTrigger trigger)
        {
            //判断trigger是否是声音触发器
            if(trigger is SoundTrigger)
            {
                //如果是,转类型
                var tempTrigger = trigger as SoundTrigger;
                //触发器与传感器的距离
                var distance = Vector3.Distance(transform.position,
                    tempTrigger.transform.position);
                //听力范围 + 传播范围 > 触发器与传感器的距离
                return tempTrigger.caseDistance + hearDistance > distance;
            }
            return false;
        }
        public override void Init() { }
    }
}