Happy/Sad BMLD cartoon ("Daniel E. Shub" )

Subject: Happy/Sad BMLD cartoon
From:    "Daniel E. Shub"  <dshub@xxxxxxxx>
Date:    Mon, 25 Aug 2008 10:52:25 -0400

I am curious about the history of the cartoon which denotes the different stimulus configurations and the corresponding performance used in studies of binaural masking level differences. I did a quick web search for an example: http://drgeorgethomas.com/images/successpicture2.jpg This one looks like the version in Moore's book. My guess is Moore's artwork was original, but that he did not come up with the concept. I am curious as to who first conceptualize the BMLD with happy and sad faces. Thank you Dan

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DAn Ellis <dpwe@ee.columbia.edu>
Electrical Engineering Dept., Columbia University