[Elecraft] PsychoAcoustics and Delay

[Jim Brown]

Hi George,

Great to hear from you.   Henry was mondo cool.  A google search will 
turn up lots of interesting stuff.  For the last couple of decades of 
his life he was the chief scientist for our country, founding director 
of the Smithsonian. The entire US government closed down the day he died 
and again for his funeral. I learned a lot about him when I did the 
research to cite him has a reference for an AES paper I was writing  on 
stereo soud reinforcement around 2000, and invited an historian who 
concentrated on his work to speak to our AES section soon after.  One of 
the things he was asked to weigh in on had to do with the physics of 
propagation of sound from foghorns. Big deal back then, there were 
multiple theories advanced, instrumentation to resolve the issue would 
not exist for at least 100 years, and he publicly put his money on the 
right horse.  His work on the perception of sound and delay that formed 
the basis of stereo was published in 1850, and it was quite solid.  
There are multiple volumes of his scientific writing. I found them in 
the Northwestern University library.

73, Jim K9YC

On 9/1/2012 9:38 PM, gdaught6 at stanford.edu wrote:
> Hi Jim,
>
>> One of the earliest scientists was
>> Joseph Henry, inventor of voltmeters and motors, whose name is on
>> the unit of inductance.
> We measure inductance in "Josephs"?  8-)
>   
> Sorry... that's one of my favorite word games.
>
> 73,
>
> George T Daughters, K6GT
> CU in the California QSO Party (CQP)
> October 6-7, 2012
>
>
>
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