Riverside and Wolverhampton

Bill Hibbert bill at h...
Thu Jun 17 14:56:01 BST 2004

Nigel Taylor:

> Beats between bells
I was experimenting with a peal of 12 true-harmonic bells the other 
day. I discovered that the beats between the equal-tempered tierces 
of the 11th and 12th when rung almost together were at the frequency 
of the prime or strike note of the 10th. If the 11th and 12th are 
rung together and set, then after a couple of seconds what sounds 
like the strike note of the 10th will be quietly heard even though it 
has not rung. Bizarre but true!

> did Cyril have trouble pitching very
low frequencies?

I published a brief note on the ability of the ear to determine low 
frequencies the other day (www.hibberts.co.uk/peals.htm and scroll 
down to 'ability to discriminate frequencies). I have done some more 
research since, it is documented in academic journals that untrained 
ears can't judge pitch at 60Hz to better than 70 cents. Trained ears 
can do better but still not anything like as well as at higher 

> compare C.D.'s figures with the original G & J figures.

I compared Chris' figures with David Bagley's recordings; they were 
the same to within recorder speed and normal tolerances.

Bill H

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