Breaking News
Design How-To

Buenos notches - the Filter Wizard vs. the vuvuzela

7/14/2010 08:21 PM EDT
3 comments
NO RATINGS
Page 1 / 2 Next >
More Related Links
View Comments: Newest First | Oldest First | Threaded View
WKetel
User Rank
Rookie
re: Buenos notches - the Filter Wizard vs. the vuvuzela
WKetel   7/22/2010 5:19:28 PM
NO RATINGS
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
Rookie
re: Buenos notches - the Filter Wizard vs. the vuvuzela
nickname goes here   7/19/2010 7:33:00 PM
NO RATINGS
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
Rookie
re: Buenos notches - the Filter Wizard vs. the vuvuzela
old account Frank Eory   7/15/2010 7:59:05 PM
NO RATINGS
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.

August Cartoon Caption Winner!
August Cartoon Caption Winner!
"All the King's horses and all the KIng's men gave up on Humpty, so they handed the problem off to Engineering."
5 comments
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Flash Poll
Radio
LATEST ARCHIVED BROADCAST
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.