如何在Unity C#中淡出音频

public class AudioFadeOut : MonoBehaviour
{
    public float fadeTime = 2f; // 淡出时间
    private float initialVolume; // 初始音量
    private AudioSource audioSource;

    void Start()
    {
        audioSource = GetComponent<AudioSource>();
        initialVolume = audioSource.volume;
    }

    void Update()
    {
        if (audioSource.volume > 0)
        {
            // 计算淡出后的音量
            float newVolume = audioSource.volume - (initialVolume / fadeTime * Time.deltaTime);
            audioSource.volume = Mathf.Max(newVolume, 0); // 确保音量不小于0
        }
    }
}