As most multimedia software enthusiasts know, Audacity is a typical audio editor that is compatible with different platforms, including Windows, Mac and Unix-like operating systems. It is quite famous in the post processing of all types of audio. That's why every time a user wants to edit an audio, like speed, tempo, pitch, normalize, bass, etc. he always think of Audacity the first time. If you are just going to increase volume in Audacity, don't miss the guide in this article. In case there are different needs, we will also introduce its alternatives to help boost volume.