Amplitude and Intensity

Question 1

Amplitude

Answer 1

Is the maximum degree of change in a atmospheric pressure

Question 2

In a pure sine wave, what is the true average pressure of a sound wave?

Answer 2

Zero

Question 3

Root mean square (RMS)

Answer 3

Measures informative index of average pressure of a wave

Question 4

Decibel scale

Answer 4

Relates amplitude/intensity to our perception of loudness

Question 5

Give one reason why it is preferable to represent loudness with a scale that is logarithmic rather than linear.

Answer 5

It accommodates the wide range of human hearing

Question 6

Does the value 0 dB indicate the absence of any sound? If not, what does it indicate?

Answer 6

No. Does not mean ‘no sound’.

0 dB means that the sound in question has the same intensity and amplitude as the standard reference sound.

Question 7

Dynamic range

Answer 7

Measure that the amplitude/intensity is equivalent of MPF

Question 8

Voice range profile (phonetogram)

Answer 8

Plots dynamic range across frequencies

Question 8

Explain how dynamic range measure differs at different points in an individual’s frequency range.

Answer 8

Dynamic range is greatest in the middle of the F0 range, smaller at speaker’s highest and lowest F0.

Question 9

Describe the characteristic shape of a typical VRP.

Answer 9

Dynamic range is greatest in the middle of the F0 range

Smaller at speaker’s highest and lowest F0

Question 10

Why is there a notch in a typical speaker’s VRP?

Answer 10

Represents point of change to a different vocal register

Question 11

Identify one clinical diagnosis that you would expect to be associated with an atypical VRP.

Answer 11

Intervention for vocal pathology