Tuning method of the "Ϊͺ"
Preface
The tuning of the "Ϊͺ" 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
@ @A "Ϊͺ" 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.
AThe 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
Φ = resonance frequency
1.2@Principle tuning of the "Ϊͺ"
(1)Resonance theory
@In the case of a "Ϊͺ" the pipes from manner of composing"Μϋ"
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
AWhen the pitch of the applicable hole is high, lengthen length from
manner of composing "Μϋ" 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
BWhen the pitch of the applicable hole is low, shorten length from
"Μϋ", or do make a hole big; a pair I deal
I adjust both balance and actually tune it
CHole 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 "Ϊͺ"