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At first, I was looking for a solution to decrease my screen’s brightness. Many solutions, however, just recommended to install this or that software in order to solve the problem. But this solution managed to set the brightness of my screen without installing any software.

Therefore, I wanted to ask if there are similar ways to deal with the low bass issue. That is: Is there a command which lets me check what bass value is currently configured and is there another one that allows me to change that value?

Nemgathos
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  • What is "the low bass" issue? Do you mean you want to control sound volume? – zwets Aug 08 '18 at 19:48
  • I mean that if I, for example, watch a video on YouTube, the bass isn’t very high – and I have no clue how to change this. Of course, I could download the video and play it with the help of the VLC player which then allows me to change the bass values but this is not a very practical solution. – Nemgathos Aug 08 '18 at 19:55
  • Please advise which flavor and version number of Ubuntu is in use, by clicking on the edit link above and left, and adding that vital information to your question. – K7AAY Aug 08 '18 at 20:40

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Yes, you can! Cryptopat wrote in https://unix.stackexchange.com/questions/164476/how-to-control-equalizer-within-command-line

The pulseaudio equalizer included in the packages for 18.04 and some other earlier versions has settings in the user file ~/.config/pulse/equalizerrc

To install it, please execute this command: 

sudo apt-get install pulseaudio-equalizer

To display it:

cat ~/.config/pulse/equalizerrc

Increasing the 5th band of the equalizer by 10DB, and immediately hear the change, is accomplished from a shell prompt with:

sed -i '19s/.*/10.0/' ~/.config/pulse/equalizerrc | pulseaudio-equalizer toggle

The editor sed will replace line numbered 19, with a 10 db bump in the config file; then the equalizer is restarted to hear the result.

K7AAY
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  • I use Ubuntu 18.04, but when I type cat ~/.config/pulse/equalizerrc, it says that the file or directory /home/username/.config/pulse/equalizerrc and the command pulseaudio-equalizer cannot be found. – Nemgathos Aug 08 '18 at 21:02
  • To install it, please execute this command: sudo apt-get install pulseaudio-equalizer – K7AAY Aug 08 '18 at 22:48