Housing and Noise 2017

Question 1

What are the elements of a housing inspection?

Answer 1

habitat must meet adequate psychological and physiological needs as well as protect against diseases and accidents
ceiling must be at least 7’6 inches
kitchen and bathroom must be 7’
avoid overcrowding

Question 2

Define sociocusis

Answer 2

becoming deaf from noise as you get older

Question 3

What is pressbycusis?

Answer 3

age deafness - old age

Question 4

What is noise measured in?

Answer 4

frequency of sounds expressed as Hertz

Question 5

What is the frequency range of audible sounds?

Answer 5

20-20,000 Hz

Question 6

What is a period in regards to sound wave?

Answer 6

time of one cycle (wavelength)

Question 7

What is frequency defined as in terms of sound waves?

Answer 7

number of cycles/second

Question 8

What does doubling of sound pressure result in?
x3?
x4?
x8?

Answer 8

sound does not have additive effect
doubling = +3 dB
so 100 dB + 100 dB = 103 dB

triple = +4.8
x4 = +6 dB
x8 = +9 dB

Question 9

How does a sound level meter work?

Answer 9

measures sound pressure in decibels of the actual sound level emitted from a source
ultimately measures loudness
frequency does not play a role

Question 10

How does an octave level/waveband analyzer work?

Answer 10

used in measurement of hearing - audiometric test
sound pressure is not important
device emits diffrerency frequency sound waves and tests hearing acuity

Question 11

What are noise dosimeters?

Answer 11

used to measure occupational noise during work day to meet noise exposure laws

Question 12

What are the Federal noise standard limits

Answer 12

7am-10 pm
rural - 60 dBA
suburban - 65 dBA
urban 65 dBA

10pm-7am
rural - 50 dBA
suburban - 55 dBA
urban - 60 dBA