Idea Transcript
Bkaa Dal Corti* Quarterly No. 54 January 1989
FOMRHI Quarterly BULLETIN 54
6
Bulletin Supplement
8
Course: Applied Conservation Technology, Dundee
9
New Acquisitions to the Kenneth G. Fiske Museum
11
Plans: Italian Stringed Instruments: The Shrine t o Music Museum
14
Music and Book News
15
Membership List Supplement
67
COMMUNICATIONS
894- REVIEWS: Manual or Method of Instruction for playing the Welsh 895 Harp, by E. Roberts (reprint of 1902 print of mid-19th century manuscript)} Notes on some Journals: Harpsichord & Fortepiano Magazine (Oct. '88), Larigot no. 2 (May '88), Galpin Sodety Journal XLI C88), American Musical Instrument Sodety Journal XIII C87), Early Music \-ui6/r *-•>
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Document C
9."Descriptions des Machines et Procedes specifies d'Invention", Serie 1, vol.11, Paris, ISIS, p.242. 10 id. p.246 1 I note 1, p.381.
dans
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Brevets
50
I underlined in the above French quotation what is important for us: first, "raised at present concert pitch". A proof that piano-fortes were at a lower pitch in former times in Paris! From Mr. Prony's long footnote he added to the paragraph 1256 of his "Mecanique analytique" published in Paris in 1815, we learn that the "concert pitch" was around A-440 [extreme values calculated by the scholar: A-441 - A-435. "L'ut, dont il s'agit ici, est celui du ton d'orchestre actuel, plus haut d'un demi-ton, ou environ 1/12° d'octave, que l'ut de 1'ancien ton d'eglise..."](1 2). (I shall come back onto this interesting source later). secondly, "the wire usually employed by the makers". Here we cannot decide whether Nuremberg or Berlin is meant, knowing that both were available in Paris (s. Pleyel's letter above). The calculations Since string lengths and frequencies are given there, we can use the table calculate the diameters of the strings put on by Schmidt. How can we calculate the diameter values? This is not difficult for n°3 and n°2 of iron of Schmidt's table. As regards the brass diameter (n°0), we see that it has not been used on this instrument. and
We find the following values for the diameters of the iron wire n°3