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Digital Filter Designer

Python Version License PyQt5 Matplotlib SciPy

Digital Filter Designer Digital Filter Designer Digital Filter Designer

Overview

The Digital Filter Designer is a powerful application built using PyQt5 and Matplotlib. It allows users to design and visualize digital filters, including standard filters and all-pass filters, and generate corresponding C code. This tool is ideal for students, researchers, and engineers working in the field of digital signal processing.

Demo video

https://drive.google.com/file/d/1P7x8AQ1tuT9XlT_HM9brPxJPCl7oTAro/view?usp=sharing

Main Features

  • Z-Plane Plotting: Visualize zeros and poles on the Z-plane.
  • Standard Filter Design: Design Butterworth, Chebyshev, Bessel, and Elliptic filters.
  • All-Pass Filter Design: Create custom all-pass filters and predefined all-pass filters.
  • Real-Time Signal Plotting: Load signals from CSV files or draw signals using the mouse.
  • Transfer Function Visualization: View the magnitude and phase response of the designed filter.
  • C Code Generation: Generate C code for the designed filter for easy integration into other projects.

Getting Started

Prerequisites

Ensure you have the following installed:

  • Python 3.x
  • PyQt5
  • Matplotlib
  • NumPy
  • SciPy
  • Pandas
  • Jinja2
  • PyQtGraph

Installation

  1. Clone the repository: 
    git clone https://github.com/HarmoniCode/Digital-filter.git
  2. Navigate to the project directory: 
    cd Digital-filter
  3. Install the required packages: 
    pip install -r requirements.txt

Running the Application

  1. Navigate to the project directory: 
    cd Digital-filter
  2. Run the main application: 
    python main.py

Usage

Z-Plane Plotting

  • Add zeros and poles to the Z-plane by entering their coordinates and clicking the "Add Zero" or "Add Pole" buttons.
  • Visualize the effect of the zeros and poles on the filter's transfer function in real-time.

Standard Filter Design

  • Select a standard filter type (e.g., Butterworth, Chebyshev) from the dropdown menu.
  • The application will automatically plot the zeros and poles for the selected filter.

All-Pass Filter Design

  • Create custom all-pass filters by adjusting the parameter a using the spinbox.
  • Select predefined all-pass filters from the list of checkboxes.

Real-Time Signal Plotting

  • Load a signal from a CSV file by clicking the "Load Signal" button.
  • Draw a signal using the mouse by selecting the "Draw using Mouse" option.

Transfer Function Visualization

  • View the magnitude and phase response of the designed filter in the transfer function plot.

C Code Generation

  • Generate C code for the designed filter by clicking the "C Code" button.
  • The generated code will be displayed in a pop-up window and saved and .c file .

License

This project is licensed under the MIT License.

Contributing

Contributions are welcome! Please fork the repository and submit a pull request with your changes. For major changes, please open an issue first to discuss what you would like to change.

Contact

For any questions or feedback, please contact HarmoniCode.