Realtime Digital Filter Design Application

This desktop application enables users to design custom digital filters by placing zeros and poles on the z-plane. It provides tools for visualizing the filter's frequency response and applying it to real-time signals.

Features :

1) Interactive Z-Plane Plotting:

• Users can place zeros and poles on the z-plane.
• Modify the position of zeros/poles by dragging them.
• Delete individual zeros or poles by clicking on them.
• Clear all zeros, all poles, or reset the entire plot.
• Option to add complex conjugates for complex elements.

2) Frequency Response Visualization:

• Magnitude and phase response graphs for the designed filter.

3) Real-Time Filtering:

• Apply the designed filter to a lengthy signal in real-time.
• Control the speed/temporal-resolution of the filtering process via a slider.
• Input an arbitrary real-time signal via mouse movement.

4) Phase Correction with All-Pass Filters:

• Choose from a library of all-pass filters to correct phase.
• Visualize zero-pole combinations and phase response of all-pass filters.
• Option to add custom-built all-pass filters.
• Enable/disable added all-pass elements drop-menu.

Screenshots :

Team members:

• Aya Eyad
• Aya salah
• Habiba Salama
• Luna Eyad
• Nouran Khattab

Submitted to:

Dr. Tamer Basha & Eng. Abdullah Darwish - Systems & Biomedical Engineering, Cairo University 2025