Not only did he
1. revolutionise the
mechanism and the tone-hole system (Böhm system); he also
2. changed the conical form of the transverse flute to
a cylindrical form, whereby the head tapers to the embouchure.
While this second development is less frequently mentioned,
it is nevertheless of decisive importance for the tone of a modern flute.
Reviewing the development of the flute since Böhm’s
endeavours, it is interesting to note that little has changed with
regard to the key work, while the construction of the head has been,
and still
is, subject to fundamental alterations.
Consequently, it is fair to say today that a major
part of the flute’s tonal characteristics, such as volume,
response behaviour, and timbre, is substantially influenced by
the head.