Exam 1 Part 5

Question 1

Scale that is based upon a logarithmic scale and is suited for scaling the range of human hearing

Answer 1

Decibel scale

Question 2

What is the standard reference sound/threshold of hearing?

Answer 2

2 x 10^ -5 Pa

Question 3

What are the advantages of the decibel scale?

Answer 3

Easier to manage compared to a linear scale, pressure and intensity is easier to be managed

Question 4

An object is forced to vibrate in response to the vibration of another object

Answer 4

Resonance (forced vibration)

Question 5

What is an example of resonance?

Answer 5

Loud stereo of a car vibrates a picture from and wall in a house

Question 6

Carry impulses from CNS to periphery

Answer 6

Efferent

Question 7

Carry information from periphery to CNS

Answer 7

Afferent

Question 8

Bundle of neuron fibers

Answer 8

Nerve

Question 9

How the frequency is traveling to point A to point B; shifts in ambient pressure

Answer 9

Standing wave

Question 10

What is an example of a standing wave?

Answer 10

Slinky

Question 11

Points of the standing wave where it is not moving

Answer 11

Node

Question 12

Points of the standing wave where it is moving

Answer 12

Anti-node

Question 13

Wave that is going out from the sound source

Answer 13

Incident wave

Question 14

What 2 things make up a resulted wave?

Answer 14

Incident and reflected wave

Question 15

Wave that is going back to the sound source

Answer 15

Reflected wave

Question 16

Where does resonance occur?

Answer 16

Within any tube or pipe that contains air

Question 17

What factors might effect the resonance of a tube?

Answer 17

Length of tube, geometry (are there differences in diameter in the tube), open and closed ends

Question 18

Open ended or close ended on both sides of the tube

Answer 18

Half wave resonator

Question 19

Only has one open end on tube

Answer 19

Quarter wave resonator

Question 20

How could length affect the resonance of a tube?

Answer 20

• Shorter distance = faster/higher frequency

- Longer distance = slower/lower frequency

Question 21

How could geometry affect the resonance of a tube?

Answer 21

Regular shaped tube will be narrowly tuned and lightly dampened, irregular shape tube will be broadly tuned and heavily dampened

Question 22

What is happening in the larynx, if it is vibrating or not. What happens above the laryngeal system to filter the sound

Answer 22

Source filter theory

Question 23

Acoustic properties resulting from the vibration of the sound source

Answer 23

Pitch

Question 24

What is happening with the sound source

Answer 24

Fundamental frequency

Question 25

The fundamental frequency is also known as the first _____

Answer 25

Harmonic

Question 26

Displays the sequences of glottal pulses as a series of peaks

Answer 26

Spectrum

Question 27

Higher frequency harmonics have lower ______ than lower frequency harmonics

Answer 27

Amplitude