Frequency and Impulse Response of Linear Filters
Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
This Demonstration shows the relationship between the impulse response and the frequency response for ideal lowpass, bandpass, and highpass filters.
Contributed by: Vincent Tjeng (November 2015)
Open content licensed under CC BY-NC-SA
Snapshots
Details
Snapshot 1: lowpass filter, with the cutoff frequency
Snapshot 2: highpass filter, with the cutoff frequency
Snapshot 3: bandpass filter, centered at frequency and with width
For the lowpass and highpass filters, you specify the cutoff frequency ; for the bandpass filter, you specify the frequency that the passband is centered about and the width of the passband . Changing for the lowpass or highpass filters has no effect on the system, so the slider is disabled in those cases.
Permanent Citation