Breaking News
Comments
Newest First | Oldest First | Threaded View
Chipmuenk
User Rank
Author
re: Analyze FIR filters using high-school algebra
Chipmuenk   2/24/2012 1:37:59 PM
NO RATINGS
Oops - my only excuse is a bad cold slowing down my brain. I mixed up nulls on the real axis with conjugate complex nulls on the unit circle ...

kendallcp
User Rank
Author
re: Analyze FIR filters using high-school algebra
kendallcp   2/23/2012 9:24:00 PM
NO RATINGS
If we didn't split hairs, how would we know what's inside them (-8b But in this instance I stand by my assertion. Check equation [4]: it has three quadratic factors that have unity z^0, and three nulls in the stopband. I'm not counting the almost-null at Nyquist, on the grounds that 1.052235 doesn't equal unity...

Chipmuenk
User Rank
Author
re: Analyze FIR filters using high-school algebra
Chipmuenk   2/23/2012 11:36:29 AM
NO RATINGS
Hi Kendall, well written & fun-to-read article as always from the filter guru! So, maybe I'm just a hair-splitter, but shouldn't it read *four* nulls and *four* first order terms in the last section? Cheers, Christian

kendallcp
User Rank
Author
re: Analyze FIR filters using high-school algebra
kendallcp   2/20/2012 6:21:59 PM
NO RATINGS
Hi Frank - wait for part 2, hope the point will be much clearer then!

old account Frank Eory
User Rank
Author
re: Analyze FIR filters using high-school algebra
old account Frank Eory   2/15/2012 10:30:46 PM
NO RATINGS
Other than academic curiosity, I fail to see the advantage of factoring the polynomial of the full FIR filter just to see a bunch of neat little sub-filters. BTW Bill, it is quite common for U.S. high school students to get through a first year of calculus in high school, not to mention factoring polynomials, manipulating complex numbers and lots of other fun stuff :)

BicycleBill
User Rank
Author
re: Analyze FIR filters using high-school algebra
BicycleBill   2/15/2012 8:20:00 PM
NO RATINGS
What high school in the US gets to this level of algebra?--you're lucky if they even go to second-order exponents or polynominals. Many stop at the y = x + N level. But besides that minor complaint, a very good article.



Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
Protecting sensitive electronic circuitry from voltage ...
09:45
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Power can be a gating factor in success or failure of ...
Get to market faster and connect your next product to the ...
00:44
See how microQSFP is setting a new standard for tomorrow’s ...
The LTC3649 step-down regulator combines key features of a ...
Once the base layer of a design has been taped out, making ...
In this short video we show an LED light demo to ...
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27