Quiz 4

Question 1

What is the Bernoulli Principle?

Answer 1

The creation of a lift force from fast moving air over a surface

Question 2

What is the purpose of a drone?

Answer 2

to provide a sustained tone at a low pitch with harmonics in that match tones of the instrument

Question 3

A flute and clarinet are both about 0.6m long. What are the wavelengths of the lowest note on each?

Answer 3

Flute: 1.2m, Clarinet: 2.4m

Question 4

Why do church organs often play several pipes simultaneously on the same note?

Answer 4

to add in extra tones to mimic the harmonics of other instruments

Question 5

which instrument does not change note by changing the effective length of the pipe?

Answer 5

bugle

Question 6

what is the purpose of a reed?

Answer 6

to convert steady (DC) flow of air into an oscillating flow (AC)

Question 7

Why does a trumpet only need three buttons?

Answer 7

a wide range of notes can be reached by pressing the buttons with different strenghs

Question 8

what are the reed types for the flute, clarinet, bassoon and french horn?

Answer 8

flute: no reed, clarinet: single reed, bassoon: double reed, french horn: lip reed

Question 9

In a simple open-close tube the even harmonics are missing. However, in brass instruments, like the trumpet, this is not the case because the combination of mouthpiece, flare and bell….

Answer 9

modify the pitches of the harmonics to make a complete series

Question 10

what is the fipple?

Answer 10

the sharp edge in a whistle which creates an oscillating air flow due to vortex shredding

Question 11

What does playing in a higher register mean?

Answer 11

selecting a set of notes with a higher number of nodes in the wave

Question 12

What is ‘overblowing’ in wind instruments?

Answer 12

selecting notes with are higher harmonics, as opposed to the fundamental, of the pipe