Acoustics of the saxophone

Bb tenor saxophone

B6

Music Acoustics UNSW

Conventional Fingering

Impedance

Fingering
a key depressed
a key not depressed
a hole covered
a hole uncovered
a part of the mechanism that is not normally touched
Details in fingering legend.

Acoustic schematic
a closed tone hole
an open tone hole

Non-specialist introduction to acoustic impedance
Non-specialist introduction to saxophone acoustics

Notes are the written pitch.
Frequencies are the sounding frequency, for Bb saxophone.
Unless otherwise stated, the impedance spectrum is for a Bb saxophone.


Impedance spectrum of a Bb saxophone measured using fingering for B6.

We can think of this as the fingering for F3 with three register holes: the speaker key and the third finger holes on each hand. It plays somewhere near the eleventh harmonic (compare with the eleventh harmonic in the sound spectrum of F3). The register holes diminish and shift the five lower peaks (which, for F3, correspond to the 1st, 3rd, 5th, 7th and 9th harmonics) so that the desired peak (the sixth) is the strongest. However, we are now so far above the cut-off frequency that such discussions are rather simplistic and approximate. With this and all high notes, there is always the danger of the reed operating at one of the lower peaks. A hard reed has a higher natural frequency and one can help it with the embouchure.

Sound


Sound spectrum of a Bb saxophone played using fingering for B6.
For more explanation, see Introduction to saxophone acoustics

Sound Clip

You can hear B6 played.

Alternative Fingering

Bb saxophone

Impedance

Fingering
a key depressed
a key not depressed
a hole covered
a hole uncovered
a part of the mechanism that is not normally touched
Details in fingering legend.

Acoustic schematic
a closed tone hole
an open tone hole

Non-specialist introduction to acoustic impedance
Non-specialist introduction to saxophone acoustics

Notes are the written pitch.
Frequencies are the sounding frequency, for Bb saxophone.
Unless otherwise stated, the impedance spectrum is for a Bb saxophone.


Impedance spectrum of a Bb saxophone measured using alternative fingering for XX.

Sound


Sound spectrum of a Bb saxophone played using alternative fingering for XX.
For more explanation, see Introduction to saxophone acoustics

Sound Clip

You can hear XX played with alternative fingering.
Fingering legend
How were these results obtained?

Contact: Joe Wolfe / J.Wolfe@unsw.edu.au
phone 61-2-9385-4954 (UT +10, +11 Oct-Mar)
© 1997-2007 Music Acoustics UNSW