Duplex Scaling

Some articles on duplex scaling, duplex:

Aliquot Stringing - History
... vibration, but use a different method known as duplex scaling (see piano) ... Aliquot stringing and the duplex scale, even if they use "aliquots", are not equivalent ... Duplex scaling, which typically is tuned a double octave or more above the speaking length, does not ...
Innovations In The Piano - Acoustic and Mechanical Innovations - Tunable Duplex Scaling
... (of Haverhill, Massachusetts) employ tunable duplex scaling ... The idea behind duplex scaling, invented by Theodore Steinway in 1872, is that the non-speaking portion of the string, located between the non-speaking bridge pin and the hitch pin (formerly ... Steinway Sons' earliest employment of the duplex scale made use of aliquots, individually positionable (hence tunable) contact points, where each note of the duplex scale bears a perfect harmonic, intervallic ...