Interactive Smart Audio Visualizer with Real-Time Equalization and 3D Visualization

This paper discusses about an advanced smart audio visualizer with equalizer, by assembling Arduino, DFPlayer mini, Metal Oxide Semiconductor Field Effect Transistor (MOSFET), an arrangement of Light Emitting Diodes (LED), and a Liquid Crystal Display (LCD) to create an audio visualization and equalization system. As audio plays through the speaker, it is visualized in both real-time and plot representation. In plot representation there are 2D (time-domain and frequency-domain) and in 3D plot (time vs intensity vs frequency) formats are displayed using real-time data processing through python and in real-time visualization can be realized through LEDs synchronization. These visual representations provide the users with a deep knowledge about the audio signal’s dynamics. By changing the audio equalizer settings such as volume, bass, treble via potentiometers, these changes are not only audible but also visualized in real-time LEDs synchronization and on 2D and 3D graphs. This system is contributing to sustainability, such as reducing power consumption and enhancing educational tools. This system improves the auditory experience by providing an interactive platform that combines audio, light, and graphical representation, making it an essential tool for both educational and entertainment purposes and this is aligning with SDG 4 (Quality Education) and SDG 7 (Affordable and clean energy). The model is implemented through an experimental set up and results are obtained to validate the proposed technique and this system encourages innovative approaches to learning and entertainment while fostering SDG 12 (responsible energy consumption).