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In my laptop, some YouTube videos have a too low volume to hear anything. I'm forced to download the video and play it in MPlayer where I can use -softvol to increate the volume.

Is there any software that can amplify Windows audio globally? Similar to how -softvol works on MPlayer but for all applications.

I'm using Windows 7, my sound card doesn't have any additional user interface apart from what Windows shows.

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up vote 5 down vote accepted

You can use Loudness Equalization. In certain situations it can appear to increase volume by raising the volume of relatively quiet sounds. Enable it like this:

  • Control Panel -> Sound
  • Right-click speakers and select Properties
  • Select 3rd tab Enhancements and in that window select Loudness Equalization (More info in the link above).

This procedure does not seem to make the loudest sound any louder.

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so interesting! – kokbira Jun 15 '11 at 3:47
    
I couldn't hear any difference. Also the link is broken. – Benjamin Mar 30 '13 at 10:06

You could also right click on the speaker icon and Volume Mixer to make sure that your browser's volume is not turned down. Sometimes Windows has a habit of adjusting the volume of things for you (each program that has sound has its own independent volume control).

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Ha! I was looking for some obscure solution, deep in the Windows internals, when my solution was simply this. – Louis Mar 30 '14 at 10:02

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