How is the Hupfeld Tri-Phonola scale structured?

A standard scale was used for the Triphonola reproduction system built from 1919 onwards, so that the standard 88 note rolls can also be played. For the reproduction, however, the special rolls Animatic T or Triphonola from Hupfeld were still needed. The special feature of the Tri-Phonola lies in its many uses. The instrument can be used as a normal hand piano, as an art piano in pedal mode, as an art piano with electric drive and as a fully automatic reproduction piano with electric drive.

Since the Triphonola was not offered until after 1919 and fewer and fewer pianolas were produced and sold in Germany in the 1920s, only a few of these rarely beautiful instruments still exist today. The Triphonola scale has 101 holes (including the large track control levers) in the note sliding block. The 88 holes in the middle control the 88 notes. On the right and left are the holes for controlling the intonation and the self-playing mechanism. 

The Hupfeld Triphonola scale has the following assignment (from left to right):

Hole 1: Track check (track lever)

Holes 2 and 3: (one above the other): Piano pedal (left pedal)

Hole 4: Dynamic control mzf-p-ff accompaniment

hole 5: dynamic control mzf-p-ff melody

Hole 6: Fortepedal (right pedal)

Hole 7: Bass Solodant (melody emphasis)

Hole 8 to 95: 88 notes A2 to c5

Hole 96: treble solodant (melody emphasis)

Holes 97 and 99: Crescendo

Hole 98: dynamic control mzf-p-ff melody

Hole 100: Dynamic control mzf-p-ff accompaniment

Hole 101: Track check (track lever)

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