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October 2007
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A public conversation about our worlds.

  • Monday: Morgan J. Locke
  • Tuesday: Madeleine E. Robins
  • Wednesday: Maureen F. McHugh
  • Thursday: Bradley Denton
  • Friday: Steven Gould
  • Saturday: Caroline Spector
  • Sunday: Rory Harper

Brain Activity

The Quintessential EOB Pop Quiz

October 15th, 2007 by Rory Harper

She Who Is Awesome just now pointed me at a pic that she took in class today.

What is that thing she’s holding in her hand?


Extra points if you’ve ever held one yourself.

Automatic ‘A’ on the test if you’ve ever eaten one.


Posted in Daily Life, Rachael is Awesome, Zombies | 10 Comments »

The Endless Tone

October 15th, 2007 by Rory Harper

We’ve done some visual illusions here in the past. Now I’d like to offer you an auditory illusion. It’s call the Shepard Tone, and is a carefully constructed sequence of notes that makes you think you’re hearing a sound that is endlessly ascending or endlessly descending. It’s actually transitioning back to an original tone every octave. When it’s skillfully cooked up, it’s really difficult to hear the transition. Here’s the Wiki entry, which leads to some samples.

The trigger for this post is that a software developer that hangs out at KVR has posted four plug-ins that help you construct these types of tones.

They have some examples on their web page of Shepard/Risset tones. I highly recommend that you listen to Vurt’s “52” in the player on the web page. It’s the best-executed example of this illusion that I’ve heard so far. Vurt is a legend at KVR for many reasons, among them that he makes weirder sounds than any other sapient being on the planet. This is Vurtness at its best. Though not its strangest.

Here’s the link.

BTW – The Shepard Tone gets really, really annoying after awhile….


Posted in Daily Life | 4 Comments »

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