Free Audio Plugins VST, AU, RTAS

Atom

Atom is a free filter Audio Unit plugin developed by Sinevibes. Compatible OS(s): macOS.

Atom is a filter with focus on dynamic, tempo-synchronised modulation. It features five different resonant filter types each with three slope settings – up to super-steep -48 dB/octave. But what makes it special is its two modulators which feature multiple waveforms and run at rates from 1/128 note to 16 bars. Thanks to the chaos function which randomises the amplitude of each modulator cycle, as well as lag switch that smooths the waveform curves, Atom allows you to easily create lively, elaborate filter effects that work perfectly for pretty much any kind of input source.

Atom is also the first Sinevibes plugin to feature a new interface design language that cleanly presents internal components and logical or audio connections between them. With immediate response and no menus to get lost in, Atom is a simple yet delightful tool that you will surely use a lot.

Specifications:

Multi-mode filter with five types and –12/24/48 dB/octave slope steepness.

Dual modulators with eight waveforms, per-cycle chaos function and shape lag on/off switch.

Advanced transport sync algorithm with support for tempo and time signature automation.

Extensive use of OS X Core Animation and Accelerate frameworks for hardware-accelerated graphics and audio processing.

http://www.sinevib.es/

ATKUniversalVariableDelay

ATKUniversalVariableDelay is a free delay and echo VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKUniversalVariableDelay is a delay/echo effect, with feedforward and feedback channels with a variable/sinusoidal delay. It enables effects like vibrato or flanger.

http://www.audio-tk.com/

ATKTransientSplitter

ATKTransientSplitter is a free transient shaper VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKTransientSplitter is a mono transient splitter, cutting an input signal into its transient and sustain parts.

The plugin follows the implementation of the transient shaper with a twist explained on Audio Toolkit blog. The parameters are:

RMS is the size of the power windows.

Attack is the attack time constant for the slow attack/release filter.

Attack fraction (or ratio) is the percentage of the attack time constant that will be used for the fast attack/release filter. Used to work on the transient at the beginning of a sound.

Release is the release time constraint for the fast attack/release filter (as the release time has to be higher).

Release fraction (or ratio) is the percentage of the release time constant that will be used for the slow attack/release filter (as it has a faster release time constant). Used to work on the transient at the end of sound.

Threshold.

Slope is the ratio, 1 keeping the sustain at a constant RMS above the threshold, higher means that the sustain will be reduced by this factor (swell-like behavior).

Softness is an indicator of the harshness of the knee of the underlying swell.

http://www.audio-tk.com/

ATKUniversalDelay

ATKUniversalDelay is a free delay and echo VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKUniversalDelay is a delay/echo effect, with feedforward and feedback channels with a fixed delay.

http://www.audio-tk.com/

ATKTransientShaper

ATKTransientShaper is a free transient shaper VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKTransientShaper is a mono transient shaper with all the parameters usually hidden from the user.

The plugin follows the workflow exposed here with the following parameters:

RMS is the size of the power power windows.

Attack is the attack time constant for the slow attack/release filter.

Attack fraction (or ratio) is the percentage of the attack time constant that will be used for the fast attack/release filter.

Release is the release time constraint for the fast attack/release filter (as the release time has to be higher).

Release fraction (or ratio) is the percentage of the release time constant that will be used for the slow attack/release filter (as it has a faster release time constant). Usually set to 100%.

Threshold.

Slope is the ratio, 1 being the identity, higher than 1 compressing the transient, less than 1 swelling it.

Softness is an indicator of the harshness of the knee of the underlying compressor.

Color is an indicator of the color around the threshold: positive increases the gain around it, negative decreases it.

Quality is the amount of color.

Make-up is the gain after the effect.

Dry-wet gives the balance between the unprocessed signal and the processed signal.

http://www.audio-tk.com/

ATKStereoUniversalDelay

ATKStereoUniversalDelay is a free delay VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKStereoUniversalDelay is a stereo delay plugin based on the Audio ToolKit.

http://www.audio-tk.com/

ATKStereoPhaser

ATKStereoPhaser is a free phaser VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKStereoPhaser is a simplistic mono to stereo phaser. Its only parameter is the speed of the phaser effect between the left and right channels.

http://www.audio-tk.com/

ATKStereoLimiter

ATKStereoLimiter is a free compressor VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKStereoLimiter is a stereo brickwall limiter.

http://www.audio-tk.com/

ATKSideChainExpander

ATKSideChainExpander is a free expander VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATKSideChainExpander is a stereo expander with a side chain stereo input. It can work in left/right or middle/side mode.

http://www.audio-tk.com/

ATKLimiter

ATKLimiter is a free compressor VST, VST3, Audio Unit plugin developed by Matthieu Brucher. Compatible OS(s): Windows 64b, macOS.

ATK Limiter is a limiter based on the Audio Toolkit.

http://www.audio-tk.com/