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It often happens that a movie I'm watching has audio loudness levels set too low. Since I use a typical laptop, I can't just go raise the volume level of my speakers.

I've raised all knobs offered by GNOME's Volume Control.

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Are there tools out there that would allow me to take the loudness to beyond 100% level?

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up vote 3 down vote accepted

mplayer has -softvol-max option that allows to amplify loudness. VLC also by default allow you to raise volume up to 200%, but it can be changed in options.

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VLC lets you raise volume beyond what it calls 100%, and I assume it does that by an appropriate filter. Probably mplayer has one, too, but that involves reading the manpage, which you can do for yourself. ;)

So, short answer: look to your player program for a solution. (Though it's possible that you can globally configure something in ALSA.)

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Haven't looked further, but VLC lets me raise volume up to 200% – phunehehe Jan 24 '11 at 1:43

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