Five-Band Audio Equalizer

Overview

The Five-Band Audio Equalizer project focuses on the development and implementation of a graphic equalization circuit that can manipulate audio signals across five specific frequency bands. Designed as part of the Laboratory Practice module in semester 3, this project aims to enhance hands-on skills in electronics by creating a fully functional audio equalizer using operational amplifier (op-amp) based active filters, enabling the adjustment of gains across the low, mid, and high-frequency ranges.

Features

• Adjustable Frequency Bands: Control over five specific frequency ranges for detailed audio customization.
  • Low: 20-300Hz
  • Low Mid: 300-1kHz
  • Mid: 1kHz-4kHz
  • High Mid: 4kHz-10kHz
  • High: 10kHz-20kHz
• Active Filtering: Utilization of low-pass, high-pass, and band-pass filters to isolate and adjust specific frequency bands.
• Op-Amp Circuits: Employment of operational amplifiers for the filter circuits, ensuring high-quality signal processing.

Tools Used

• Circuit Design & Simulation: Filter Pro for filter calculations and NI Multisim for circuit simulation.
• PCB Design: Altium Designer for creating the printed circuit board layout.
• Enclosure Design: SolidWorks for designing the custom enclosure.

Circuit Design

Equilizer Circuit

Schematic Diagram

PCB Layout

PCB 3D View

LED Display Circuit

Schematic Diagram

PCB Layout

PCB 3D View

Enclosure Design

The enclosure design was developed using SolidWorks, focusing on aesthetics, functionality, and durability.

Enclosure

Team Members - ElectroMavericks Team

This project is proudly developed by the ElectroMavericks Team:

• Prabodha K.P.K.A
• Vidmal H.V.P
• Nayanthara J.N.P
• Surendra S.A.J.E