Win7 sounds are big or small

Many friends talked with Xiaobian. When they watched the movie, from time to time, they felt that the sound of the film was loud and small, and it sounded like a computer cold. Reinstalling the system is also useless. In fact, this is not a system problem, but a user-friendly design of Win7. Once your QQ or Fetion sends a tone, the system will automatically lower the current volume to remind the user. If you don't like this function, you can modify it by the following methods: The most strange of the most common Win7 system fault tips six ▲ Win 7 sound settings 1. Still use the search box, type "sound" sound 2. In the "sound" sound In the dialog box, select the “Communication tab. ” "When Windows detects communication activity, the default setting value" is to reduce the volume of other sounds by 80%. "Do not perform any operations", save it.