Next |
Prev |
Top
|
JOS Index |
JOS Pubs |
JOS Home |
Search
Basic Idea:
For the Ideal Lowpass Filter:
- Start with the ideal impulse response (e.g., sinc function):
- Window the infinite duration sinc to get a finite-duration (FIR) filter:
- Shift the noncausal (zero centered) filter to get a causal
(linear-phase) filter
- The linear-phase slope equals half the filter length
- Other types of filters (highpass, bandpass, bandstop) are designed
by first designing a low pass, and applying transformations
Subsections
Next |
Prev |
Top
|
JOS Index |
JOS Pubs |
JOS Home |
Search
[Comment on this page via email]