I remember this illusion from a presentation given around 1982 at the 
AES in Los Angeles at the Disney Convention Center. If there is an MP3 
available of that descending tone I'd like to hear it. I believe it was 
actually sung by a chorus.
Malcolm

*******

On 4/21/2015 3:13 AM, Doug Pomeroy wrote:
> Years ago the Audio Engineering Society issued two Flexidiscs
> of auditory illusions.  One by Diana Deutsch of the University
> of California at San Diego, and the other by Michael Kubovy
> and Jane E. Daniel of Rutgers. Fascinating illusions, one being
> a descending tone which doesn't really descend!
>
> Doug Pomeroy
> Audio Restoration and Mastering Services
> [log in to unmask]
>
>
>> Date:    Mon, 20 Apr 2015 19:17:39 -0700
>> From:    Lou Judson <[log in to unmask]>
>> Subject: Re: Flexi Discs are back
>>
>> Hah! While we reminisce, I still have a National Geographic one that =
>> even has a cardboard sleeve, called Sounds of Space, which I should =
>> listen to again.
>>
>> And as a teen I had the Mad Magazine song =94She got a Nose Job=94 =
>> (=93It=92s now turned up instead of hanging down=85=94) to the tune of =
>> Get a Job. I think.
>>
>> Yup: <https://www.youtube.com/watch?v=3DeCuiN2JnjpE>
>>
>> Sounds like they had fun recording that one.
>>
>> <L>
>>
>> Lou Judson
>> Intuitive Audio
>> 415-883-2689