Top Section

The header combines preset recall, undo and A/B comparison, and direct access to the plugin-wide buttons you need most while shaping the graph.

Preset & Reset Controls

• Preset Menu — Shows the current preset and opens load, save, rename, delete, and refresh actions
• Preset Arrows — Step through the available preset list one slot at a time
• RESET Button — Clears all bands, returns I/O gain to default, resets transient history, and restores a neutral editing state

Undo & A/B Controls

• A Button — Recalls or targets comparison slot A for instant before/after checking
• Arrow Button (>) — Copies the active state across the A/B slots
• B Button — Recalls or targets comparison slot B
• UNDO Button — Restores the previous edit state after graph, popup, or preset actions
• Undo History — Preset changes and graph edits feed the same history so comparisons stay fast
• A/B State Scope — Each slot stores the full plugin state, not just the selected band

Screenshot file: Manual/images/fig-03-header-bar.png

Header Control Buttons

Left header: BYPASS, UNDO, REDO, A/B compare (A, copy arrow, B), preset name, and preset navigation arrows.

Right header: RESET, CLIPPER, ENVELOPE, UTILITY, ZOOM, and SIDECHAIN. (FOCUS knob and BASIC button are reserved placeholders in the current build.)

• BYPASS Button — Switches the main signal path between processed and bypass behavior
• CLIPPER Button — Toggles the output clipper directly from the main header
• ENVELOPE Button — Opens the envelope popup for detector, threshold, and reduction monitoring
• UTILITY Button — Opens the Utility panel for theme, BYPASS MODE, BAND 1 COMP, buffer size, spectrum, and language
• SIDECHAIN Button — Opens the sidechain and monitoring panel

Reset & Session Notes

Session Reset: RESET is a working-state reset, not a cosmetic refresh. It restores the graph, dynamics, gain staging, and capture history to a neutral baseline.

• RESET also restores: Input/output gain to 0 dB and Dynamic EQ off across all bands
• RESET affects:
  • Band enable states, filter types, frequencies, and gains
  • Threshold, ratio, attack, release, and compressor bypass settings
  • Graph history, transient capture buffers, and waveform overlays
  • Selected-band focus so the editor returns to a clean starting point
• Use Case: Use RESET when you want a clean graph quickly without closing the instance or reloading the plugin.
• Workflow: Preset recall is for saved sounds; RESET is for returning the current session to an editable baseline.

Loudness & Status

• Header Metering — Loudness and metering readouts stay available so you can judge IN/OUT gain, bypass differences, and overall level behavior while editing

Center Section — Waveform Display

• Combined response graph — Shows static EQ, threshold curve, and reduction overlays in one editing view
• EQ and threshold points — Drag the main points for tone, then the threshold points for dynamic sensitivity
• Per-band reduction meters — Real-time traces show how much each active dynamic band is reducing
• Analyzer and waveform views — Input/output display, level overlays, and envelope-linked visuals stay synchronized

Screenshot file: Manual/images/fig-09-footer-controls.png

Bottom Section — Parameter Controls

• Band Buttons — Select and enable/disable bands (10 bands available)
• Mode — Filter type (Parametric, Shelf, Filter)
• Frequency — Center/corner frequency
• Gain — Static EQ gain (±30 dB)
• Q — Bandwidth/resonance
• Threshold — Dynamics sensitivity (0 to -75 dBFS, default -35 dBFS for new dynamic bands)
• Ratio — Gain reduction amount (1:1 to 20:1)
• Attack — Response speed (0.1 to 1000 ms)
• Release — Recovery speed (1 to 2000 ms)
• Input/Output — Global gain controls

• MANUAL
• YOUTUBE
• INSTAGRAM
• HELP
• LICENSE

Concept: The visual theme controls the color scheme and appearance of the entire plugin interface, allowing you to customize the look to match your workflow preferences.

Options: 10 themes: OceanBlue, SunsetOrange, ForestGreen, DesertTeal, PastelMint, NeonPurple, WarmCoral, CoolSky, BlackAndWhite, MidnightGreen

• OceanBlue: Balanced blue theme for general use
• SunsetOrange: Warm orange theme for creative sessions
• ForestGreen: Cool green theme for long mixing sessions
• DesertTeal: Teal theme for bright environments
• PastelMint: Soft mint theme for detailed work
• NeonPurple: Vibrant purple theme for electronic music
• WarmCoral: Coral theme for acoustic recordings
• CoolSky: Sky blue theme for mastering
• BlackAndWhite: High contrast theme for accessibility
• MidnightGreen: Dark green theme for low-light studios

Bypass affects only the signal path — whether the output is passed through (bypassed) or processed. It has no effect on GUI or DSP operation; meters and displays continue to work.

• UNITY — Signal is bypassed: output = input (no input/output gain, no EQ). Default.
• GAIN — When BYPASS is on, input gain and output gain are still applied (EQ processing is skipped).

Select UNITY when you want to hear the dry signal; select GAIN when you want input/output gain staging while bypassed. This control is labeled BYPASS MODE in row 2 of the Utility panel.

Function: Sets how Band 1 enters dynamic processing when Dynamic EQ is first enabled. Two options: Single Band and Q Value. See Single Band Mode for the full workflow.

Single Band

When Band 1 Dynamic EQ is enabled for the first time, Q is set to 0.001 — the widest practical setting.

Q Value

When Band 1 Dynamic EQ is enabled for the first time, Q is set to 1.0.

Band 1 only: BAND 1 COMP applies when Dynamic EQ is first activated on Band 1. Changing the Utility setting does not retroactively change Q on bands that already have Dynamic EQ enabled.

Concept: EQOMP provides six interface languages and matching manual text so the current workflow can be followed in the same layout.

• English (EN): Default language, complete documentation
• 한국어 (KR): Full Korean translation
• 日本語 (JP): Complete Japanese localization
• Español (ES): Spanish translation
• Français (FR): French translation
• 中文 (CN): Chinese translation

Level Display: Show or hide loudness and peak overlays in the main graph from Utility (LEVEL DISPLAY, row 3).

• Show — Loudness and peak overlays appear on the main graph
• Hide — Overlays are hidden for a cleaner graph view

Buffer Size Controls: Choose the analyzer buffer manually. Smaller values refresh faster; larger values resolve frequency detail more clearly.

• 256: Fastest analyzer refresh with the least frequency detail
• 512-1024: Practical starting range for most editing and mixing work
• 2048: Finer analyzer detail for corrective work and resonance checks
• 4096: Highest analyzer resolution with the slowest visual refresh

Spectrum (SPECTRUM): Choose White or Pink tilt for the analyzer display in Utility (row 3, third column).

• White — Flat spectrum display tilt
• Pink — Pink-noise compensated spectrum tilt

Visual Smoothing: Controls waveform and envelope redraw speed. Higher settings feel steadier; lower settings react faster.

• 0-20%: Real-time monitoring and fast response
• 30-60%: General mixing work
• 70-100%: Detailed signal analysis

Footer: Plugin version and copyright (bottom left); license status, email, hardware ID, and activation count (bottom right).

• Activated: Full functionality available
• Trial: Days remaining shown
• Expired: Limited functionality

LICENSE view: Selecting LICENSE replaces the control grid with license registration and management.

• TRIAL — Request a trial license from the server
• ACTIVATE — Activate with license key and email
• PURCHASE — Open purchase page
• MANAGEMENT — Open license management

Note: Close the LICENSE view to return to the normal Utility control grid.

The default and most versatile mode. Creates a bell-shaped curve centered at the frequency with width determined by Q.

• Dynamics behavior: Gain reduction follows the Q curve exactly
• Best for: Surgical frequency control, resonance taming, tone shaping

Boosts or cuts all frequencies above the corner frequency.

• Dynamics behavior: Processing applies to all frequencies above the corner
• Best for: Air/brightness control, high-frequency taming

Boosts or cuts all frequencies below the corner frequency.

• Dynamics behavior: Processing applies to all frequencies below the corner
• Best for: Bass control, low-end management, warmth adjustment

Removes frequencies below the cutoff. No gain parameter — only filtering.

• Dynamics behavior: Dynamic high-pass filtering based on input level
• Best for: Dynamic rumble removal, bass cleanup that responds to content

Removes frequencies above the cutoff. No gain parameter — only filtering.

• Dynamics behavior: Dynamic low-pass filtering based on input level
• Best for: Dynamic harshness control, adaptive brightness limiting

Fluid Response Across Any Q Width

Whether Q is ultra-wide (0.001) or tighter (1.0 and beyond), the algorithm works the same way: gain reduction follows the threshold curve, and only energy that crosses that curve is controlled. A wide Q spreads detector influence smoothly across frequency; a narrower Q concentrates it — but in both cases the response adapts fluidly to whatever signal exceeds the threshold. You are not choosing between compressor and EQ — you are shaping where and how much dynamics react across a continuous spectral field.

Single Band

When Band 1 Dynamic EQ is enabled for the first time, Q is set to 0.001 — the widest practical setting. This unlocks the full Single Band vision: one threshold curve governing broadband dynamics while the algorithm still responds only where the signal crosses the curve.

Q Value

When Band 1 Dynamic EQ is enabled for the first time, Q is set to 1.0. The same threshold-curve algorithm applies — only the spectral focus narrows, concentrating dynamic response around the band center while still adapting fluidly to threshold crossings.

FFT Buffer (BUFFER): Choose 256, 512, 1024, 2048, or 4096 samples in Utility (row 3, second column). Smaller buffers refresh faster; larger buffers improve low-frequency resolution.

Wave Smooth: Adjusts waveform and envelope redraw smoothness (0–100%). Lower values react faster; higher values feel steadier.

Level Display: Show or hide loudness and peak overlays in the main graph from Utility (LEVEL DISPLAY, row 3).

Spectrum (SPECTRUM): Choose White or Pink tilt for the analyzer display in Utility (row 3, third column).

Spectrum Y-axis zoom: 6–100 dB range (default 100 dB). Sets the vertical dBFS span for the spectrum, level meters, grid, and EQ curve — all drawn with the same coordinate mapping.

EQ gain scale (left ruler): Snaps through 30, 12, 6, and 3 dB (default 30 dB). Controls how much vertical space the EQ curve uses around the center reference.

Top-anchored display: At 70 dB and above, 0 dBFS stays at the top and the bottom sits at −range dBFS. Below 70 dB, the view zooms symmetrically around −35 dBFS so labels and waveforms stay aligned.

Adaptive grid: Grid and label spacing adjusts with zoom — 1/2 dB steps below 12 dB, 2/5 dB up to 40 dB, and 5/10 dB at 100 dB and above.

Mouse Wheel Control

Command or Option + wheel: Over the graph, adjust spectrum Y-axis zoom in 5 dB steps. The EQ curve, spectrum, meters, and grid update together.

• Scroll up: Wider range (zoom out)
• Scroll down: Narrower range (zoom in)
• On-graph hint: Current zoom value shown at the center while adjusting

Control + wheel: Cycles EQ gain scale through 30 → 12 → 6 → 3 dB over the graph.

Mouse Wheel Parameter Control

Band point + wheel: Scroll over a band point to adjust its Q value.

• Scroll up: Higher Q (narrower)
• Scroll down: Lower Q (wider)
• Range: 0.001 to 10.0

IN/OUT meter + wheel: Left IN meter = input gain, right OUT meter = output gain. Scroll over either meter handle to adjust in 0.5 dB steps (hold Shift for 0.1 dB). Drag works the same on both sides.

Left ruler + wheel: Between the IN meter and left labels — snap EQ gain scale through 30, 12, 6, and 3 dB.

Right ruler + wheel: Between the right dBFS labels and OUT meter — adjust spectrum Y-axis zoom in 2 dB steps.

Double-Click Ruler Reset

Quick reset: Double-click a ruler area to restore its default scale instantly.

• Left ruler: EQ gain scale → 30 dB
• Right ruler: Spectrum Y-axis zoom → 100 dB
• Meter areas excluded: Double-clicking the IN/OUT level bars does not trigger reset

Use 6–12 dB zoom to inspect the noise floor and subtle level changes; use 70–100 dB for a full-session overview. Double-click the right dBFS ruler to return to the 100 dB default.

Concept: Interactive band buttons on the EQ graph provide direct access to individual band controls and visual feedback for your EQ curve adjustments.

Band Button Features

Visual Controls: Each EQ band has a corresponding button on the frequency response graph.

• Click: Select and highlight the band for parameter adjustment
• Drag: Directly manipulate frequency and gain by dragging the button
• Color Coding: Different colors for different filter types (Peak, Shelf, Cut)
• Active State: Visual indication when band is enabled and processing

Filter Type Indicators

Shape Recognition: Button appearance indicates the current filter type.

• Peak Filter: Circular button for bell-shaped EQ curves
• Shelf Filter: Square button for high/low shelf responses
• Cut Filter: Triangular button for high-pass/low-pass filters

Workflow Integration

Efficient Control: Graph buttons enable fast, visual EQ adjustment workflows.

• Quick Selection: Click any button to instantly access that band's controls
• Visual Feedback: See the exact frequency and gain response in real-time
• Precise Control: Drag buttons for immediate, accurate adjustments
• Curve Overview: See all active bands and their interactions simultaneously

Professional Advantage: Graph band buttons combine the speed of visual control with the precision of numerical input, providing the most efficient EQ workflow available.

Setup

• Mode: Parametric
• Frequency: 5-8 kHz (find the sibilant frequency)
• Q: 2-4 (narrow enough to target sibilance)
• Gain: 0 dB (no static EQ)
• Threshold: -20 to -30 dB
• Ratio: 4:1 to 8:1
• Attack: 0.5-2 ms (fast to catch sibilants)
• Release: 50-100 ms

Why EQOMP excels: The threshold curve means only the sibilant frequencies trigger reduction, and the reduction is proportional to the frequency content — not a blanket cut.

Setup

• Mode: Parametric
• Frequency: Find the resonant frequency (often 80-200 Hz)
• Q: 4-8 (narrow to target the resonance)
• Gain: 0 dB
• Threshold: -15 to -25 dB
• Ratio: 3:1 to 6:1
• Attack: 10-30 ms
• Release: 100-200 ms

Why EQOMP excels: Tames only the resonant frequency when it becomes excessive, leaving the rest of the bass intact.

Setup

• Mode: Shelf-Hi
• Frequency: 8-12 kHz
• Gain: +2 to +4 dB (static boost)
• Threshold: -25 to -35 dB
• Ratio: 2:1 to 3:1 (gentle)
• Attack: 20-50 ms
• Release: 200-400 ms

Result: High frequencies are boosted, but excessive brightness is automatically controlled. You get air without harshness.

Setup

• Mode: Parametric
• Frequency: 2-5 kHz (attack frequencies)
• Q: 1-2 (moderate width)
• Gain: 0 dB
• Threshold: -20 to -30 dB
• Ratio: 2:1 to 4:1
• Attack: 30-50 ms (let transients through)
• Release: 50-100 ms

Result: The attack of drums punches through while the sustain/ring is controlled in the target frequency range.

Setup

• Multiple bands with very gentle settings
• Q: 0.5-1 (wide, gentle curves)
• Threshold: -30 to -40 dB
• Ratio: 1.5:1 to 2:1 (very gentle)
• Attack: 20-50 ms
• Release: 200-500 ms

Result: Transparent frequency balance that responds to the music. Problem frequencies are gently controlled without obvious processing. For mastering applications, you can use the Single Band or Multiband presets for more effective frequency control. Tip: It's recommended to use single-band compressors that apply different gain reduction for different frequencies, rather than uniform gain reduction across all frequencies.

Concept

With EQOMP, each band reacts only in its own frequency range. A loud snare won’t pull down the whole bass or piano — only the frequencies that overlap. So you can tame problem peaks without changing the rest of the mix.

Setup

• Mode: Parametric or Multiband
• Use multiple bands for different frequency ranges
• Set thresholds per band independently
• Ratio: 2:1-6:1
• Attack/Release: Adjust per instrument characteristics

Result: Each band is independent. You control only the frequencies that need it; the rest stays natural.

Concept

You can reduce the level of unwanted resonances outside of the essential resonances of the audio source by adjusting the attack time. A huge advantage is that you can use a multiband compressor without worrying about phase.

Setup

• Mode: Parametric
• Frequency: Target the unwanted resonance
• Q: 4-10 (precise targeting)
• Threshold: -15 to -30 dB
• Attack: 0.5-5 ms (fast reduction)
• Ratio: 3:1-8:1

Result: Unwanted resonances are quickly reduced while preserving the essential character of the source. The phase-coherent processing ensures transparent results.

Concept: The A/B Compare feature allows you to store and instantly switch between two different EQOMP settings for real-time comparison and fine-tuning.

A/B Buttons

Instant Switching: Two dedicated buttons (A and B) for storing and recalling different plugin states.

• A Button: Store current settings as Preset A
• B Button: Store current settings as Preset B
• Copy Button (->): Copy settings from A to B or B to A
• Undo Button: Revert to previous state

Workflow Applications

Professional Comparison: Essential for critical listening and decision making in mixing and mastering.

• Mixing Decisions: Compare subtle vs. aggressive EQ settings
• Mastering Choices: Evaluate different compression approaches
• Before/After: Instant comparison of your processing
• Fine Tuning: Make small adjustments while comparing results

Technical Implementation

Complete State Capture: A/B slots store the complete plugin state including all band parameters, global settings, and processing modes.

• All Parameters: EQ bands, dynamics, global settings
• Instant Switching: Zero-latency switching between A and B
• Persistent Storage: Settings maintained across sessions
• Independent Operation: Each plugin instance has its own A/B slots

Mixing Essential: A/B Compare is fundamental to professional audio production, enabling confident decision-making through direct, real-time comparison of different processing approaches.

© 2026 Modou DSP. All rights reserved.

You draw tone and dynamics on the same graph. Static EQ defines the shape, dynamic bands turn that shape into a live threshold curve, and Q or filter type defines how far the action spreads. The result can be surgical, broad, or smoothly blended across several bands.