A jnoisemeter is a small app designed to measure audio test signals and in particular noise signals.

Installing this package adds a timer application to the GNOME Shell top panel. With it you can start a timer of any duration and when elapsed, you'll get a notification. You can also preconfigure various durations to avoid having to retype them.

TetraProc converts the A-format signals from a tetrahedral Ambisonic microphone into B-format signals ready for recording. Main features:

Tunnel enables you to draw cave surveys based on Survex-compatible centreline data. Drawings will be adjusted to fit if the underlying data moves due to loop closures. Original drawings/scans/pockettopo imports can be used as a basis to draw over. Complex multi-layered surveys can be drawn, with flexible facilties for colour-grouping and adding images or background maps. The application can use data stored online and works on all major platforms.

This is a GM SoundFont, for use with any modern MIDI synthesiser: hardware (like the emu10k1 sound card), or software (like FluidSynth).