Tuning method of the "尺八"
Preface
The tuning of the "尺八" is an extremely technical and empirical thing, but it is necessary to understand a principle.
It is important "indeed" I understand, and to tune.
1 resonance theory
1.1 Theory of Helmholtz
①A "尺八" has to know how the pitch and the resonance of the sound are
established.Can understand it by a flask to show in the chart below
by a theory of Helmholtz; do.
②The resonance frequency is inversely proportional to a volume and
length to show it in the chart below. In other words, a volume is
big; of the pipe.If length becomes long, a resonance frequency
lowers and thinks that I can understand that the resonance frequency
becomes higher if a volume is small, the length of the pipe is short
again and the area of the pipe grows big.
Resonator of Helmholtz
ω = resonance frequency
1.2 Principle tuning of the "尺八"
(1)Resonance theory
①In the case of a "尺八" the pipes from manner of composing"歌口"
to a hole volume V, the length to a hole L,I can think with area
of the internal hole S of the pipe
In addition, the volume of hole itself will be included in the
volume, too
②When the pitch of the applicable hole is high, lengthen length from
manner of composing "歌口" from the principle mentioned above; or
is the small in a hole
It turns out that you should deal in doing that it bloom
I adjust both balance and actually tune it
③When the pitch of the applicable hole is low, shorten length from
"歌口", or do make a hole big; a pair I deal
I adjust both balance and actually tune it
④Hole itself functions as a resonance melody
Therefore, the tuning each hole in each pitch
I delicately influence it
Comparison of a flask of Helmholtz and the "尺八"