Daily Archives: July 9, 2013

Increase sound volume beyond 100% on Realtek HD audio

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Have you ever wanted to increase the volume of a video or music track, but found that everything was already set to 100%?

There are a few solutions that work well, but I found them to be either to cumbersome or not effective enough. Sometimes the “loudness” enhancement (build into windows) rather dampened the volume!! I also tried DSP and DX plugins, but they are a nightmare to implement on system sounds. The windows build in Audio Processing Objects, or APOs, (of which the loudness enhancement is one object) are a great feature, but I found nobody developing usable software that uses the library (??)

But if you are in luck of having Realtek HD Audio hardware, the driver software can be setup so it gives you an extra boost. And, as an added bonus, it does so without clipping.

Here is what you do:

Double click the “speaker” icon of the Realtek driver.
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Then configure your speakers as a 5.1 (or 7.1) surround set. (remove the check for the center, subwoofer and side pair. We don’t need them.)
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Enable Room Correction (!)

Then adjust the front left and front right speakers to +10 dB
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You will now have an extra 10 dB (which is a LOT) gain. This is especially noticeable when watching those youtube videos that have the audio mixed to low. Music will also gain from this trick, but when it is already loud, some compression will occur as to avoid clipping. Still the effect is much louder without extra hardware or intrusive (distorting equalizing) pay-software.

Have fun.

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