Bertom Audio has released Air Shelf, a freely downloadable (pay what you want) high-frequency enhancer in VST3 and AU plugin formats for Windows, macOS, and Linux.
Air Shelf is a plugin designed to enhance the frequency spectrum’s high-end by adding “air” and removing harshness. The developer describes it as a crossover between a very fast dynamic equalizer and a transient shaper.See also: Slate Digital Releases FREE Fresh Air Plugin (iLok Cloud)
The plugin features a minimal user interface with only two controls. The Boost knob controls the high-shelf EQ, which is centered at 20 kHz. It uses a gradual EQ curve that smoothly boosts the higher frequencies without adding harshness. Use it to subtly enhance solo vocals and similar audio sources that might lack “air” and sparkle.
The Tame knob is designed to ensure a smooth top end by removing harsh resonant frequencies. It features a fast dynamic EQ and a transient shaper, which only affects the volume spikes in the high end of the frequency spectrum.
Having tested Air Shelf on a vocal track and an acoustic guitar recording, it’s easy to recommend Bertom Audio’s plugin as an easy tool for enhancing the high-end. Air Shelf is easy to use, and its boost/tame workflow can speed up a busy mixing session.
As for the GUI, the plugin looks tiny on a full HD screen, and it’s almost too small to use on a 4K resolution screen. Having the option to resize the GUI would be a welcome improvement. Hopefully, we’ll see this feature added in a future update.
If you like Air Shelf, consider checking out Bertom Audio’s previous release called Denoiser. It’s a free noise reduction tool with a control layout that resembles a graphic EQ.
Air Shelf is available for free download from the product page linked below. The plugin is offered on a pay what you want basis. You can download it and use it for free. Consider paying for the plugin and supporting the developer’s work.
At checkout, enter zero as the amount to download Bertom Air Shelf for free. Enter any other amount (the suggested price is $5) to donate to the developer.
Air Shelf is compatible with all VST3 and AU plugin hosts on Windows, macOS, and Linux. Both 32-bit and 64-bit digital audio workstations are supported. The downloaded ZIP archive containing an auto-installer which will extract the necessary plugin files to your hard drive.
More info: Air Shelf (3.3 MB download size, ZIP archive containing EXE installer, 32-bit & 64-bit VST3/AU plugin format for Windows, macOS, Linux)