Tech Ramblings…

By Dr. T

Does a Ducks quack, quack back…

I get tons of forwarded emails and messages about such facts. Infact, theres a new term for this. Its called internet-folklore. One of the interesting facts (or myths) that I recently came across was

“Does a ducks quack echo back”.

I was watching Myth Busters on Discovery Channel and they recently busted the myth. Ducks quack DO echo back. But the reason why its made it into internet-folklore is that the reverberations of the quack and the echo are so similar, that people (including compturs and wave form softare) confuse it as a regular quack.

Recent research on echos reveals that humans voice and echo is represented as a big spike (voice) followed by a lull and a smaller spike (echo) in the spectrum. Instead of this phenomena, in the ducks case, there is a gradual decrease in the waveform that forms after a ducks quack and its echo back. Which is hard to distinguish for both humans and computers alike since the gradual decrease gets confused for a duck quacking on and on when its quite and its echo is being thrown all over. Giving the wrong impression that a ducks quack, dont quack back after hitting a wall.

Hence, another myth busted…Good job Adam and Jammie…



September 27, 2006 - Posted by | Uncategorized


  1. I was researching the ducks echo and saw your website and your skill with technolgy made me take a chance and write you.I’m 65, my wife a little older but sadly she is going blind.She still has some sight in one eye but being a lifelong reader is finding life harder. I’ve looked at all the tech aids for the blind and find them lacking. At the moment I am experimenting with “handheld” minature surviellance “TV” cameras that she can wave over a page and read the large print on her screen.Have you any ideas?

    Comment by Blaine Bethune | October 8, 2006 | Reply

  2. Thanks for your comment Blaine. I’ve emailed you a detail response with some things that could help you in your search of such a device. I hope your wife’s vision gets better soon.


    Comment by tashfeen | October 10, 2006 | Reply

  3. very interesting, but I don’t agree with you

    Comment by Idetrorce | December 16, 2007 | Reply

  4. […] doesn’t echo and no one knows why – anyone on WAB know if thats true. Have a gander here Ron! Does a Ducks quack, quack back… « Tech Ramblings… __________________ The seeds of today are the flowers of […]

    Pingback by quiz do you know - Page 2 - Wildlife and Environment Forums | April 19, 2008 | Reply

  5. […] Posted by Jez Have a gander here Ron! Does a Ducks quack, quack back… « Tech Ramblings… Thanks for that Jez. We have a pair that come into our garden daily for food and if we are not […]

    Pingback by quiz do you know - Page 3 - Wildlife and Environment Forums | April 23, 2008 | Reply

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