LinearPhaseGraphicEQ 2 is a legacy, freeware Finite Impulse Response (FIR) graphic equalizer VST plugin developed by the indie developer Slim Slow Slider. Originally released in the mid-2000s for Windows systems, it gained popularity among budget audio engineers for bringing transparent, linear-phase mastering capabilities to a free format. Key Features of the Plugin
61 Frequency Bands: Unlike standard 10 or 31-band graphic equalizers, it features a highly detailed 61-band interface for incredibly precise surgical cuts or boosts.
Flexible Gain Ranges: Users can set the behavior of the sliders to three distinct ranges: [-12 to +12dB], [-24 to +24dB], or a drastic [-96 to +12dB].
Mouse-Draw Interface: It allows users to easily click and drag a custom EQ curve directly across the screen using a mouse.
High Internal Precision: Processes audio using a 32-bit float internal precision engine and supports sample rates up to 96kHz.
Mastering Edition: A specialized “Mastering Edition” was also released, which tripled the internal precision at the cost of higher CPU consumption. What Makes it “Linear Phase”?
Traditional equalizers (called “minimum phase” EQs) introduce tiny time delays to certain frequencies when you boost or cut them. This shifts the phase of the audio, which can cause a “smudged” sound or frequency cancellations when multi-mic tracks or parallel layers are summed together.
LinearPhaseGraphicEQ 2 solves this by delaying all frequencies equally. This keeps the phase perfectly intact, resulting in a cleaner, more transparent tonal shift that preserves the original stereo image and clarity. The Trade-offs
Because it is an older, free plugin utilizing linear-phase FIR filtering, it comes with specific drawbacks: LinearPhaseGraphicEQ 2 Mastering Edition released
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