D1 Digital Delay

A fully custom-built digital delay plugin developed with JUCE 8 (C++).

D1 Digital Delay is a stereo delay featuring BPM-synced timing, millisecond mode, ping-pong routing, high/low-pass filtering, stereo width control, and a complete preset system (factory + user presets). The GUI is custom rendered (knobs, switches, and visualizations) to resemble a rack-style hardware unit.

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Screenshots

Delay View

EQ View

Presets Menu

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Features

• Stereo Digital Delay
• BPM Sync (incl. musical subdivisions / time signature display)
• Millisecond Mode for manual delay time
• Ping-Pong Mode
• Feedback control
• Mix / Level control
• High-pass / Low-pass filtering
• Stereo width control and visualization
• Independent Left / Right blend controls
• Preset system
  • Built-in factory presets
  • Save and load user presets
  • Real-time preset switching
• Custom-rendered GUI
  • Custom knobs and toggle switches
  • Custom delay visualization
  • Custom EQ curve visualization
  • Real-time parameter display readout

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DSP Overview

The DSP engine is implemented in C++ and designed for responsive, real-time parameter control. The plugin includes:

• Delay buffer management with feedback routing
• Ping-pong routing across stereo channels
• Real-time high-pass / low-pass filtering
• Width manipulation and visualization
• Smooth UI interaction with custom parameter displays

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UI Architecture

The user interface is rendered using JUCE Graphics primitives and custom components:

• Filmstrip-based knob rendering
• Custom button / toggle styling
• Graph-based delay visualization (tap “bell” representation)
• EQ curve visualization view
• Preset dropdown/menu and save system integration

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Preset System

D1 Delay supports:

• Factory presets (included)
• User presets (save current settings)
• Loading and switching presets while running

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Build Instructions

1. Install JUCE 8 (tested with JUCE 8.0.1).
2. Open D1Delay.jucer in Projucer.
3. Set your global modules path (or update modules paths as needed).
4. Select your exporter (Xcode / Visual Studio).
5. Export and build the VST3 target.

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Notes

The production version includes a commercial licensing/authentication system. This public repository uses a local stub so the demo project builds and runs without network dependencies.

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Author

Nate Parish
Parish Audio

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License

This project is provided for demonstration/portfolio purposes.