An acoustic StarrBoard
StarrBoard is a chromatic matrix of strings and frets, whose string
spacing is such that thirteen strings spans the same distance as an
octave on a standard keyboard. The StarrBoard pictured has frets spaced
for 12 tone equal temperament, but the frets may of course be placed
according to any tuning scheme.
By tuning the strings to a particular non 12tet scheme, say a
just scale of ratios
1/1 16/15 9/8 6/5
64/45 3/2 8/5 5/3 16/9
the StarrBoard can play justly in 12 equally spaced key centers, as
modulation is easily accomplished by playing within higher or lower
of strings, frets and position markers.
the left, playing a 32 string MIDI StarrBoard. Center, 24 string
StarrBoard and Matrix. Right: 6 string contrabass.
picture is a bass and treble pair of 27 string fanned fret StarrBoards.
StarrBoard has an heir! Marcodi Instruments is producing a StarrBoard
-like instrument called the harpejji. The main difference is that the
harpejji is tuned in whole steps stringwise, and of course, it is
actually in production. You can see the harpejji here:
Marcodi Musical Products
to John Starrett's Musical Instrument page