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Live Q&A with fred harris - The DSP Biquadratic Recursive Filter: A Fox in the Hen House

Fredric J Harris - Watch Now - Duration: 29:01

Live Q&A with fred harris following his talk titled "The DSP Biquadratic Recursive Filter: A Fox in the Hen House"
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Score: 0 | 3 years ago | no reply

I helped design the spectrum analyzer for spectral dynamics as well as much of the signal processing they did in the two channel version that permitted all kinds of neat measurements... One you must recall is the coherency... (how much of what we see in the cross correlation came from different time intervals) i wrote a DSP application note for spectral DSP-005 (as I recall)... I'll send you a refresher copy!

Score: 0 | 3 years ago | no reply

Some time in uni about 20 years ago I scored a used Spectral Dynamics SD375 (http://www.itsonlyaudio.com/ultranalog/sd375/).
It came with its own weight in documentation, amongst which several of your papers. It hooked me on signal processing and may even have been the reason I decided to finish my degree and thus, the foundation of my career.
Your presentation style is as elegant as the papers you write. Many, many thanks for the work you do to teach.

Score: 0 | 3 years ago | 1 reply

Wonderful presentation! Where can I view the non-recursive presentation? Thanks.

Score: 0 | 3 years ago | no reply
Score: 1 | 3 years ago | no reply

As usual you are absolutely amazing in putting things into perspective.

Score: 1 | 3 years ago | no reply

Hi fred,
Sorry I couldn't attend your talk live but family called.
I just wanted to add a quick note to say thanks so much for the great presentation.
I came across the coefficient quantization problem many years ago. We solved the problem by changing the filter spec to still meet the application requirements but if I'd known your trick (slides 72 to 74) it would have saved a lot of time. This should be required study for all DSP students.
Its always a pleasure, my friend.

Score: 0 | 3 years ago | no reply

i know,,, as they say, time goes by very quickly when you are having a good time....
thanks for the feedback!

Score: 1 | 3 years ago | no reply

Great talk. The time flew by. It didn't feel like it was over an hour.

15:43:36	 From  Michael Kirkhart : From what I remember from my own DSP work as well as from my graduate DSP course, the reasons for using IIR filters are: lower latency for a given attenuation, but the bigger reason is you can use analog filter design tools to create IIR filters.
15:46:47	 From  mnapier : Can you share a matlab script showing a design example of that last IIR filter?
15:49:12	 From  Radu Pralea : The second edition of Sklar had a CD with companion software in SystemView (Elanix). What kind of companion software (demonstrations) does the 3rd ed come with, since I guess SystemView is kind of outdated?
15:59:35	 From  Radu Pralea : please share both, of course, and if you could also point to the corresponding papers you mentioned, it would be great! :)
16:00:53	 From  Michael Kirkhart : Sorry - unknown technical difficulties
16:01:03	 From  Ibrahim Khalife : So good to see you Professor!!
16:01:04	 From  cblo : thank you
16:01:08	 From  Jessica Kedziora : thank you!