[CAUT] set of C forks

[Ed Sutton]

Fred-
These are "medical" tuning forks, used to test hearing. Some doctors still use them for a quick assessment of hearing. There were several interesting techniques for hearing tests, such as "Hold the fork to the top of the skull and have the patient report if it sounds louder in one ear."
Ed S.


----- Original Message ----- 
  From: Fred Sturm 
  To: caut University Technicians 
  Sent: Tuesday, October 28, 2008 11:25 PM
  Subject: [CAUT] set of C forks


  Hi all,
  I found this set of C forks next to the piano in a customer's house today. Rather a curiosity. C3, C4, C5, C6 and C7. The big one in the middle is C7, the thin one on the bottom is C3. They are not quite standard pitch (either 435 or 440), but rather that "powers of 2" series of frequencies: 128, 256, 512, 1024, and 2048 (numbers stamped on each fork). The owner knew nothing about them. I suspect they might have been intended for other than tuning (hearing tests?), but really have no idea. Maybe someone on the list knows something. Anyhow, something curious.






  100_0998.JPG








  Regards,
  Fred Sturm
  University of New Mexico
  fssturm at unm.edu





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