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Nemgathos
Asked: 2018-08-09 11:29:09 +0800 CST

How to increase bass *solely* using terminal commands (*no* installation of any software) (Ubuntu 18.04)

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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?

sound command-line

1 Answers

  1. 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.

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