Recorder Design
A miscellaneous collection complied in 2006.
SupercorderDesignIssues.txt
RecorderCharistics-fromKung.txt
Window length (supercorder 4mm; width at window ~16mm)
Short and Long bore in Alto Recorders:
- Long bore is accousticly "correct" and allows well over two
octaves playing range. As with Supercorder, keys are often used for
the lowest holes, especially low F & F#. In Supercorder,
separating the G & G# holes via a key for the G hole improves
strength of G# and A, at the arguable expense of needing left 4 to
play only lowest G and below. This key isn't pressed for any
notes above low G as second octave is different. (Transverse flute
is similar but done oppositely: 4th left is held down to open
this position for all notes above "D" (equivalent to "G" on
F recorder), and in both octaves.)
- Short bore is so the 3rd & 4th right fingers can reach the
lowest holes, at the expense of musical characteristics, especially
weak low notes.
Here is a typical curved windway, undercut at edges but less than
for a straight windway. But it is less curved than Supercorder,
where window & labium simply follow the bore: the cuts are
entirely above (outside) with no undercuts.
Windway & Labium alignment
Recrdr-CmpltGuid-LeeCollins.txt
SpdOfSoundAtVarTemps&Humids.txt
Voicing.txt
WoodsRoleInRecorderSound.html