Digital Filter Analysis
Magnitude, phase, impulse, and step responses, phase
and group delays, pole-zero analysis
Analyze frequency- and time-domain responses of filters. Visualize filter poles and zeros in the complex plane.
Apps
Filter Analyzer | View, analyze, and compare filters (Since R2024a) |
Filter Designer | Design filters starting with algorithm selection |
Functions
Topics
- Frequency Response
Compute and display frequency responses of IIR and FIR lowpass, highpass, and bandpass filters.
- Phase Response
Extract the phase response of a filter.
- Group Delay and Phase Delay
Measure the average time delay of a filter as a function of frequency.
- Zero-Pole Analysis
Find and visualize poles and zeros of a linear system.
- Impulse Response
Generate and display the impulse response of a simple filter.
- Compensate for the Delay Introduced by an FIR Filter
Use indexing to counteract the time shifts introduced by filtering.
- Compensate for the Delay Introduced by an IIR Filter
Remove delays and distortion introduced by filtering, when it is critical to keep phase information intact.