extace software package provides waveform viewer, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install extace
extace is installed in your system.
Make ensure the extace package were installed using the commands given below,
$ sudo dpkg-query -l | grep extace *
You will get with extace package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Sound |
| Package | extace |
| Version | 1.9.9-6build1 |
| Description | waveform viewer |
| Sub Section | Sound |