The Ray Gun line of noise filter plugins from Arboretum systems now includes an Audio Units version for Mac OS X. Aside from the cool name, the plugins have a number of noise removal features. These are the features of the Pro version (from the website) — reduced versions are also available.

Intelligent Search Function Ray Gun finds and eliminates noise, all by itself. Fine-tune the processing using Ray Gun’s simple Attenuation, Threshold and Sensitivity controls.

Noise Reduction Ray Gun uses fast spectral analysis, a downward expansion function and special search-and-destroy noise busting technology to reduce or eliminate broadband noise, including fan sound and tape hiss.

Pop/Click Removal Ray Gun finds the spikes, clicks and pops in your file, and seamlessly removes them from your audio.

Filtering Get rid of pesky 60-cycle hum and low-end rumble. For European electrical systems we’ve also included 50-cycle hum filtering.

Level Correction If the noise reduction you’ve selected is so extreme that the overall level is decreased, you can make up for the volume loss at the output stage.

Enhancement The Enhancements section of Ray Gun DirectX offers a classical bass/treble equalizer and a stereo enhancer.

Automation When used within a Mac OS X Audio Units plug-in host that supports this feature Ray Gun Pro AU parameter changes can be fully automated.