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SystemSoundsService, 系统声音用户模式代理

Tags: /计算机文档/Windows应用技巧/Windows 7/   Date Created:
Windows 计划任务中的SystemSoundsService, 系统声音用户模式代理的作用

SystemSoundsService Task

这个计划任务,是用于命令提示符显示蜂鸣声音(beep),以及系统告警的叮叮叮,比如一个模态窗口显示在顶部,你点击其他窗口的时候,就会顶部窗口闪动,同时发出叮叮叮的声音,就是这个服务来实现的。
关闭后就不能在批处理和命令提示符显示声音了。命令提示符下显示Beep蜂鸣声,可以用下面的指令测试,在命令提示符(command prompt)下面,输入以下指令即可听到蜂鸣声:
echo ^G
注意^G是按键盘上的Ctrl+G字符,不是输入^符号和G!

I have a piece of software that relies on the calling a windows beep in order to alert that there is an incoming alarm. However there is no sound made. I also noticed that where Windows would usually play this sound. i.e., clicking on a background window with a popup window in front, or hitting an invalid key. It is not making any sound

I have checked the sounds to make sure they are enabled. I have checked the Beep in the hidden devices section of the device manager it is running. I have checked the registry keys

  • HKCU\Control Panel\Sound\Beep and
  • HKCU\Control Panel\ExtendedSounds.

The last thing I found was a task under \Microsoft\Windows\Multimedia\SystemSoundsService. I notice that it is not running on my workstation as it is on my laptop. The task says "Ready" on the workstation and says "Running" on my laptop. I dont see any logs about any failures.