gnome-alsamixer software package provides ALSA sound mixer for GNOME, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gnome-alsamixer
gnome-alsamixer is installed in your system.
Make ensure the gnome-alsamixer package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnome-alsamixer *
You will get with gnome-alsamixer package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | GNOME |
| Package | gnome-alsamixer |
| Version | 0.9.7~cvs.20060916.ds.1-3 |
| Description | ALSA sound mixer for GNOME |
| Sub Section | GNOME |