Exam 2

Question 1

Amplification

Answer 1

Increase in sound

Question 2

Attenuation

Answer 2

Filtration of sounds

Question 3

Resonant Frequency

Answer 3

An object’s natural vibrating frequency

Question 4

Half-open tube

Answer 4

Vocal tract (half open tube) is coupled with larynx (forced vibration) and amplifies sounds that are near its resonant frequencies and attentuates sounds that are not near its resonant frequencies

Question 5

Resonator

Answer 5

Filter

Question 6

Low Pass Filter

Answer 6

Below some cut off pass through

Question 7

High Pass Filter

Answer 7

Above some cut off

Question 8

Bandpass FIlter

Answer 8

Lets through frequencies between a low and high cut off frequency

Question 9

Broad-band

Answer 9

Filter attenuates all frequencies

Question 10

Bandwidth

Answer 10

Range of frequencies that a band pass filter responds to.

Max (upper cutoff) - Min (lower cutoff)

Center Frequency = Min + ½ * BW

*Responds to = create some amplification or pass through with little or no attenuation

Question 11

Narrowly Tuned Resonator

Answer 11

Acoustic resonator that responds only to a relatively small range of frequencies

Question 12

Broadly Tuned Resonator

Answer 12

Acoustic resonator that responds to a broader range of frequencies

Question 13

Which tends to be more damped, narrowly or broadly tuned resonators?

Answer 13

Broadly tuned

Question 14

Damping

Answer 14

How fast it comes down in amplitude

Question 15

On average, a person whose vocal folds have greater mass will have _____________, compared to a person whose vocal folds have smaller mass

Answer 15

lower fundamental frequency

Question 16

A person who has a shorter vocal tract will have _______, compared to a person with a longer vocal tract

Answer 16

higher forman frequency

Question 17

Increasing the F₀ will cause_______

Answer 17

harmonics to be spaced farther apart

Question 18

Changing F₀ causes a change in _____

1. input spectrum only
2. transfer function only
3. output spectrum only
4. transfer function and output spectrum
5. both input and output spectra

Answer 18

both the input and output spectra

Question 19

Decreasing the length of the vocal tract would cause a change in __________

1. input spectrum only
2. transfer function only
3. output spectrum only
4. transfer function and output spectrum
5. both input and output spectra

Answer 19

The transfer function and the output spectrum

Question 20

Decreasing the length of the vocal tract would cause _____________

1. harmonics to be spaced closer together
2. harmonics to be spaced farther apart
3. formants to be spaced closer together
4. formants to be spaced farther apart