How to adjust sound properties, like with a graphic equalizer, in Ubuntu

Question

I am running Ubuntu 9.10. How do I adjust the sound out to reduce or increase the bass and treble ranges of the sound?

Answer 1

There's a post on Ubuntu Forums on how you can use PulseAudio Equalizer.

Advantages:

• Configurable 15 band equalizer for PulseAudio;
• You can enable or disable equalized audio on-the-fly, without having to restart any running applications;
• Offers the choice of using equalized audio for the current session or permanently;
• No need to edit any configuration files by hand;
• User-customizable: you can use any LADSPA audio processing plugin (which can apply various audio effects beyond equalization);
• Packaged as a .deb file for easy installation;
• Graphical User Interface.