Design Con 2015
Breaking News
Newest First | Oldest First | Threaded View
User Rank
re: Buenos notches - the Filter Wizard vs. the vuvuzela
WKetel   7/22/2010 5:19:28 PM
THe adaptive cancellation approach does sound like a much more effective, and probably much simpler to implement approach. Of course, it would require using two identical microphones, but that should not be very difficult. Back in the 1960's I did use an manually controlled cancellation system to reduce background noise a whole lot, probably about 40dB,m although I could not measure it at that time.

nickname goes here
User Rank
re: Buenos notches - the Filter Wizard vs. the vuvuzela
nickname goes here   7/19/2010 7:33:00 PM
Why not take out all stadium noise with an adaptive noise canceller and then add back zuzu-free generic stadium roar when the real roar peaks or whenever you think it's appropriate, like a laugh track on a sitcom. Soccer fans won't mind. They're probably mostly that same sitcom demographic

old account Frank Eory
User Rank
re: Buenos notches - the Filter Wizard vs. the vuvuzela
old account Frank Eory   7/15/2010 7:59:05 PM
Excellent article Kendall! I'm always delighted to see practical DSP problems and solutions presented in an easy to understand manner. You described a real-world problem involving an imperfectly known signal, followed by a methodical approach to solving it beginning with the simplest possible solution and then progressing to more complex solutions, subject to real-world implementation limitations of your chosen hardware platform. Since the signal of interest was audio, it was great that you discussed psychoacoustics and how your ultimate solution to the problem took advantage of that. This is the kind of article that can get young engineers interested in DSP and in a very non-intimidating manner. Thanks again for writing this.

Top Comments of the Week
Flash Poll
Like Us on Facebook Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Max Maxfield

Recommended Reads From the Engineer's Bookshelf
Max Maxfield
I'm not sure if I read more than most folks or not, but I do I know that I spend quite a lot of time reading. I hate to be idle, so I always have a book or two somewhere about my person -- ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...