A friend said about my clavichord that "it has a EMT plate built in". What he meant is that the bridge intersects the strings so there is a good
length of inactive string to the right, while the portion on the left is played on. These "inactive" string lengths vibrate sympathetically and create
a reverb effect. If a piece of felt is placed on those string sections, the instrument sounds completely different. That effect likely contributes
something to the timbre of the floating bridge oud. BTW, the soundhole on the clavichord is hidden, it faces UNDER the keys. And a closer cousin is
the Lautenwerk, a sort of harpsichord that uses lute/oud strings.
On the oud the unplayed strings are themselves excited by the played notes and contribute to the richness of the sound. The tuning in ascending
fourths seems to accentuate the effect. It's also very noticeable on the viola da gamba, which is also light and resonant, and has 6 strings tuned
similarly, so that letting a note "ring out" and excite all the strings and the "case" is part of "its sound". A "tuned reverb" effect could be tried
by mounting a speaker on a soundhole to excite the oud with the source, and mic'ing at another soundhole. I don't know how strong it would be.
|