$ sudo apt-get update
$ sudo apt-get install ardour-altivec 

ardour-altivec is installed in your system.

Make ensure the ardour-altivec package were installed using the commands given below,

$ sudo dpkg-query -l | grep ardour-altivec *

You will get with ardour-altivec package name, version, architecture and description in a table

ardour-altivec package basic information: