The Antonio Torres guitar called "La Leona" became an archetype of the Spanish guitar.
One of the particular features of this guitar is its "Tornavoz," a metal cylinder encircling the soundhole internally and focussing the sound projection towards the auditory. It, however, also blocks the access to the instrument's internal structures. Therefore new technical procedures had to be developed for any investigations of the interior of the instrument.
The instrument was documented in our institute using boriscopes, additional data were acquired in cooperation with the Fraunhofer Institute Fuerth.
A x-ray tomography directed by Dr. Theobald Fuchs (Fraunhofer Entwicklungszentrum Röntgentechnik Fürth) gave this film of the interior of the instrument, previously unknown since the Tornavoz blocks conventional access.
More see also:
Theobald Fuchs, Guido Brennhäuser, Helga Haritz: Perspektiven der Röntgen-Computertomographie zur Untersuchung historischer Musikinstrumente, in: Franz Körndle und Gert-Dieter Ulferts, Konservierung und Restaurierung historischer Tasteninstrumente in den Sammlungen der Klassik-Stiftung Weimar, Augsburg 2011, S. 69-79.
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