Author Question: A combination of two sounds with equal SPL values always results in a. a 2-dB increase over the ... (Read 27 times)

NguyenJ · **on:** Jul 26, 2018

A combination of two sounds with equal SPL values always results in

a. a 2-dB increase over the SPL of one source alone
b. a l0-dB increase over the SPL of one source alone
c. a doubling of the SPL value of one source alone
d. not enough information given
e. none of the above

Question 2

Sampling for ambient particulate measurements is done primarily by

a. dustfall buckets
b. hi-vol samplers
c. PM10 samplers
d. Ringlemann samplers e. cascade impactors