🎵 Audio Signal Plotter

A comprehensive MATLAB-based audio analysis application built with App Designer for visualizing and analyzing audio signals in multiple domains.

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📋 Overview

Audio Signal Plotter is an intuitive graphical application that enables users to load audio files and instantly visualize various signal characteristics. The app provides multi-channel analysis, frequency domain representation, and time-frequency analysis through an easy-to-use interface.

✨ Features

Core Visualizations

• 🎧 Dual Channel Display - Separate visualization of left and right audio channels
• 📊 Amplitude vs Frequency Analysis - Frequency spectrum representation of the audio signal
• 🌈 Spectrogram Generation - Time-frequency analysis showing how frequency content evolves over time
• 📁 Audio File Import - Support for common audio formats (WAV, MP3, etc.)

Key Capabilities

• Real-time signal processing and visualization
• Multi-panel layout for comprehensive analysis
• Clean, professional user interface
• Built entirely with MATLAB App Designer

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🚀 Getting Started

Prerequisites

• MATLAB R2020a or later (recommended)
• Signal Processing Toolbox
• Audio Toolbox
• Access to MATLAB Online or local MATLAB installation

Installation

1. Clone or download this repository to your local machine
2. Open MATLAB or MATLAB Online
3. Navigate to the project directory
4. Open the .mlapp file in MATLAB App Designer

Running the Application

% Option 1: Run from App Designer
% Open the .mlapp file and click "Run"

% Option 2: Run from Command Window
% Navigate to the app directory and execute:
AudioSignalPlotter

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💡 How to Use

1. Launch the Application - Open the app from MATLAB App Designer or command window
2. Load Audio File - Click the import/load button and select your audio file
3. View Analysis - The app automatically generates and displays:
   • Left channel waveform
   • Right channel waveform
   • Frequency spectrum (Amplitude vs Frequency)
   • Spectrogram (Time-Frequency representation)

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📊 Visualization Details

Left & Right Channel Plots

Displays the amplitude variation over time for each stereo channel, allowing you to identify channel-specific characteristics and stereo separation.

Amplitude vs Frequency

Shows the frequency distribution of the audio signal using Fast Fourier Transform (FFT), revealing the dominant frequencies present in the audio.

Spectrogram

Provides a three-dimensional view (time, frequency, and intensity) of the audio signal, ideal for analyzing how the frequency content changes throughout the recording.

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🛠️ Technical Stack

• Platform: MATLAB Online App Designer
• Language: MATLAB
• Required Toolboxes:
  • Signal Processing Toolbox
  • Audio Toolbox (optional, for extended format support)

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📂 Project Structure

AudioSignalPlotter/
│
├──Final project.zip           # Main application file
├── README.md                  # Project documentation
├── Working Demonstration.png  #photos of project
├── UI preview.png             #UI looks 

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🎯 Use Cases

• Audio Engineering - Analyze recorded tracks and identify frequency content
• Music Production - Examine stereo separation and frequency balance
• Educational Purposes - Learn about signal processing and audio analysis
• Research - Conduct acoustic studies and audio signal research
• Quality Control - Verify audio file characteristics and identify anomalies

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🔮 Future Enhancements

• Real-time audio input analysis
• Additional filters and effects
• Export visualization options
• Batch processing capabilities
• Customizable plot settings
• Audio playback controls

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📝 License

This project is available for educational and personal use.

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👤 Author

Created as a MATLAB audio analysis project using App Designer.

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🤝 Contributing

Suggestions and improvements are welcome! Feel free to fork this project and submit pull requests.

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📧 Contact

For questions or feedback regarding this project, please open an issue in the repository.

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Built with ❤️ using MATLAB App Designer