Dynamic Frequency Limiter
Key Features
- Frequency-targeted compression and limiting using biquad filters that can narrow down to a single frequency
- Independent or linked control over scanning (detection) and alteration (processing) frequency regions
- Built-in transient designer mode with dynamic distortion tied to frequency settings
- External sidechain input for ducking, frequency-dependent compression, and AM modulation effects
- Hard limiter with 0 dB threshold for output protection
- Adjustable envelope delay for precise control over gain reduction timing
- Exaggerate button that doubles the compression ratio for more aggressive dynamic control
Description
Dynamic Frequency Limiter by SirSickSik is a frequency-targeted dynamics processor that combines band-peak filtering, compression, limiting, and transient design in a single plugin. Unlike conventional compressors that act on the entire signal or broad bands, it uses biquad filters to scan a specific frequency region and apply gain reduction or addition to that exact area.
The plugin can independently control the cutoff frequency and bandwidth for both the detection (scanning) region and the processing (alteration) region, or link them together. This allows for surgical tasks like feedback destruction on a single frequency, dynamic resonance taming, or frequency-specific transient enhancement.
Sidechain input enables ducking, AM modulation effects, and frequency-dependent compression triggered by an external source. A hard limiter with a 0 dB threshold protects the output, while an adjustable envelope delay fine-tunes how quickly gain reduction engages.
The "Exaggerate" button doubles the compression ratio for more aggressive processing, and the "Add Transient" mode introduces dynamic distortion tied to the frequency settings. Users on the KVR forum have praised its effectiveness for taming problem frequencies in old recordings and adding punch to drums.
Dynamic Frequency Limiter was created as an entry for the KVR Developer Challenge 2014. It is a 32-bit Windows-only VST plugin built with SynthEdit, and requires jBridge for use in 64-bit hosts.
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Frequently Asked Questions
What is the difference between Dynamic Frequency Limiter and a standard compressor?
A standard compressor acts on the entire signal or a broad frequency band. Dynamic Frequency Limiter uses biquad filters to target a specific frequency region for compression, limiting, or expansion. This makes it more surgical, allowing you to compress just a narrow resonance or a single problem frequency without affecting the rest of the signal.
Does Dynamic Frequency Limiter work in 64-bit DAWs?
Dynamic Frequency Limiter is a 32-bit VST plugin, so it does not run natively in 64-bit hosts. You can use jBridge or a similar 32-to-64-bit bridge to load it in modern DAWs. It is Windows-only and does not support macOS or Linux.
What does the Exaggerate button do?
The Exaggerate button multiplies the compression ratio by 2x, resulting in more aggressive dynamic control. This is useful when you need heavier gain reduction on a problem frequency or want a more dramatic transient shaping effect.
Can Dynamic Frequency Limiter be used as a de-esser or feedback destroyer?
Yes. Because the plugin can target a very narrow frequency band, it works well as a makeshift de-esser by compressing the sibilance range, or as a feedback destroyer by clamping down on a single resonant frequency in a live recording. The independent scan and alteration controls give you precise targeting.
