SimpleEQ

A 3-band equalizer VST/AU audio plugin built with JUCE, featuring customizable filters and real-time FFT-based frequency visualization.

Overview

SimpleEQ is a cross-platform audio plugin for digital audio workstations (DAWs), developed using C++ and the JUCE framework. It offers a 3-band equalizer with low-cut, peak, and high-cut filters, adjustable slopes (12–48 dB/octave), and a real-time frequency response curve powered by FFT analysis. The plugin features a custom-designed GUI with intuitive rotary sliders and bypass controls, showcasing skills in digital signal processing (DSP), GUI development, and modern C++ programming.

Features

• 3-Band Equalization:
  • Low-cut and high-cut filters: 20 Hz–20 kHz, 12–48 dB/octave slopes.
  • Peak filter: 20 Hz–20 kHz, ±24 dB gain, 0.1–10 Q.
• Real-Time FFT Analysis:
  • 2048-sample FFT with Blackman-Harris window for accurate frequency visualization.
  • Displays left (skyblue) and right (lightyellow) channel responses.
• Custom GUI:
  • Rotary sliders with dynamic labels (Hz, dB, dB/Oct) and custom styling.
  • Bypass buttons for each filter, disabling associated sliders when active.
• Robust DSP:
  • Butterworth filters for smooth frequency response.
  • Thread-safe parameter handling via AudioProcessorValueTreeState.
• Compatibility:
  • VST/AU formats, tested in FL Studio 21+, Ableton Live, etc.

Technical Details

• Language: C++17
• Framework: JUCE 7.0+
• Key Components:
  • PluginProcessor: Manages audio processing and FIFO-based FFT data transfer.
  • PluginEditor: Implements custom sliders, buttons, and response curve visualization.
  • FFTDataGenerator: Processes audio for FFT analysis.
  • LookAndFeel: Customizes GUI aesthetics.
• Dependencies: JUCE (included via Projucer)
• License: GNU GPL v3.0

Installation

Clone Repository:

git clone https://github.com/joshualopez7776/SimpleEQ.git
cd SimpleEQ