Spectrum Thief, Filter, Humanizer MIDI: Free Plugins of the Week
Spectrum Thief is a nifty free EQ matching plugin that can capture and match the frequency response of your audio tracks. This week’s collection of freebies also includes a versatile filter and a humanizer that’ll breathe life into your MIDI tracks.
Free Plugins of the Week
Ghost Note Audio Spectrum Thief: Free EQ Matching Plugin
Spectrum Thief by Ghost Note Audio does just what it says: it “steals” the frequency response of one track and automatically generates an EQ curve to tone-match a second track. While it appears to be primarily designed for guitars, the developer states that it also works on full mixes, allowing you to match your mix to a reference track. You can apply the desired amount of smoothing and roll off the lows and/or highs to exclude them from the tone-matching process. Thanks to a handy spectrum display with a live mode, there’s plenty of visual feedback.

But Spectrum Thief can do more: you can also export the captured frequency response as an IR, making it a great tool for capturing your speaker cabinets. The IR length and sample rate are both adjustable.
Spectrum Thief is available for macOS and Windows in VST and AU formats.
Lunacy Audio Filter: Free Multi-Mode Filter Plugin
Next up is a very versatile free filter plugin from Lunacy Audio. Like Haze, Filter was lifted from the developer’s excellent BEAM 2.0 multi-effect plugin ($99). It offers a selection of state-variable filters, including lowpass, bandpass, highpass, shelf, bell, peak, and notch options. There are even comb and formant filters for more experimental sound design.

The filter slope is adjustable in a wide range from 1 to 8 poles. Filter also offers a note snap feature that lets you quantize the band frequency to musical pitches. It even includes a stereo width control. The plugin comes with 20 presets.
Filter is available for free for macOS and Windows in VST, AU, and AAX formats. The full version of BEAM 2.0 is available from Plugin Boutique* for $99.

Audiowavez Humanizer MIDI: Breathe Life into your MIDI Tracks

Do your MIDI tracks sound static and lifeless? Humanizer MIDI by Audiowavez is a great way to give your MIDI tracks a more human feel. It does this by adding slight random variations to both the velocity and timing of your MIDI notes. You can adjust the intensity of the effect (e.g. the range of the variations), as well as the base velocity value. A quick way to breathe life into quantized MIDI tracks!
Humanizer MIDI is a VST3 plugin for Windows.
Looking for more free plugins like Spectrum Thief, Filter, and Humanizer MIDI? Check out our archive!