Berlin, Freedom Bell

Bill Hibbert bill at efg8q9ZRLxo3AofnJgwJMCmNYK2Q49I9yg3Zfksq34j4XH3qd7NCos7jhaDLL1tNIrsfvs8Q5mqzVF1eZHo.yahoo.invalid
Tue Jun 19 19:00:31 BST 2007


Alan, thank you so much for the prompt response and the tuning 
figures. There is a good match with those I measured from the 
recording. I have used some educated guesswork to interpret the 
figures from the G&J records and others may be able to shed some light.

I am assuming that a figure such as 199 3/8+1/10 means that a fork 
measured at 199 3/8 cycles per second beat against the relevant 
partial with one beat in 10 seconds. 429 1/2+ 1 1/3 I took to mean a 
fork with frequency 429 1/2 cycles per second beating at 1 1/3 beats 
per second (i.e. 4 beats in 3 seconds).

With this as background the figures that line up are as follows:
G&J     Recording
82.1    86.8 (hum)
165     151.9 (prime)
199.5   198.1 (tierce)
355.2   334.4 (nominal - the G&J figure should be 335.2!)
504.2   502.5 (superquint)
699.8   694.9 (octave nominal)
916.9   910.8 (I-7)
1142.3  1138.6 (I-8)
1388.5  1382.2 (I-9).

Some comments on these figures:
* the recorder used was running 0.5% slow
* the G&J figure for the nominal is in error, 355Hz is an F, not an E
* G&J struggled to measure the very low frequencies for hum and prime 
using forks and I am not surprised.

I do not know the significance of the second batch of figures, 
starting 731 LW&W.95&CR.

Thanks again for the figures, they confirm that this is definitely a 
recording of the right bell.

Regards,

Bill H



           



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