|Acoustics of baroque, classical and modern flutes|
to acoustic impedance
This may be compared with the fingering for A4, but with a register hole to play E6. It may also be considered as the trill fingering for D#5 (C#5 to D#5) with enough cross fingering to flatten it approximately a semitone. The 3rd and 1st minima, respectively, correspond to these pitches.
For this situation to apply, the frequencies of the notes have to be such that the effect of the inertia of the air in the open tone hole is large enough to allow some transmission past the hole, but small enough to produce some reflection. For low-pitched notes, the tone hole is usually small.
You can hear the multiphonic D5 & E6 played by Geoffrey Collins.
|Acoustic measurements are available for these flutes -
modern B, modern C, classical C, classical D, classical flared, baroque
Sound clips are available for modern B, classical flared and baroque
|To compare flutes, it is easiest to open a separate browser window for each instrument.|