diff --git a/public/恢复_太空机战_HTML5 Canvas.fla b/public/恢复_太空机战_HTML5 Canvas.fla
deleted file mode 100644
index c28ef1d..0000000
Binary files a/public/恢复_太空机战_HTML5 Canvas.fla and /dev/null differ
diff --git a/src/classes/main.js b/src/classes/main.js
index 722a7e8..fd3fe2d 100644
--- a/src/classes/main.js
+++ b/src/classes/main.js
@@ -45,11 +45,11 @@ Main.prototype.init = function () {
 };
 
 // play
-// 限制了两次动作间隔时间不能少于2s
+// 限制了两次动作间隔时间不能少于3.5s
 // 游戏状态在进行中才能触发
 // play次数 >= 最多完成次数 调用结束的callback
 Main.prototype.play = function (direction) {
-  if (Date.now() - this.prevTime <= 1200 || state !== 1) return;
+  if (Date.now() - this.prevTime <= 3500 || state !== 1) return;
   // if (state !== 1) return;
   this.element.play();
   if (direction === 99) return;
diff --git a/src/classes/sound.js b/src/classes/sound.js
index 5ce2cfc..00fde16 100644
--- a/src/classes/sound.js
+++ b/src/classes/sound.js
@@ -32,8 +32,8 @@ Sound.prototype.init = function () {
 };
 
 Sound.prototype.playBgm = function () {
-  this.music.bgm && this.music.bgm.play({ loop: -1, volume: 0.5 }); // 播放背景音乐
-  this.music.audio2 && this.music.audio2.play({ loop: -1, volume: 0.2, playbackRate: 1.2 }); // 播放射击声
+  this.music.bgm && this.music.bgm.play({ loop: -1 }); // 播放背景音乐
+  this.music.audio2 && this.music.audio2.play({ loop: -1, volume: 0.1 }); // 播放射击声
 };
 
 Sound.prototype.playBomb = function (direction) {