Open terminal from the Dash, Menu, or Press Ctrl+Alt+T on keyboard and execute below command:
sudo add-apt-repository ppa:audacity-team/daily
This PPA contains daily builds from audacity's git repository at
https://github.com/audacity/audacity
To install run
sudo add-apt-repository ppa:audacity-team/daily
More info: https://launchpad.net/~audacity-team/+archive/ubuntu/daily
Press [ENTER] to continue or ctrl-c to cancel adding it
sudo apt-get update
sudo apt-get install audacity audacity-dbg
Compilation instructions 5:
First you must download wxWidgets. Audacity 2.1.2 requires wxWidgets 3.0.x,
preferably 3.0.2, which can be obtained from:
http://www.wxWidgets.org/ .
The libsndfile library is also required and is included in Audacity obtained
from GitHub.
CMake ( http://www.cmake.org/ ) is required to build the local copy of
the libsoxr resampling library used by Audacity, unless you install
libsoxr-dev and use that system library.
Installation of other libraries is optional, see:
http://wiki.audacityteam.org/wiki/Developing_On_Linux#optional .
If you install libraries using a package management system like Apt or RPM,
you need to install the "dev" (development) packages for each library.
To compile on Linux, Mac OS X and other Unix systems, execute these
commands:
./configure
make
make install # as root
To see compile-time options you can set, you can type
./configure --help