pipo6242 pipo6242

22-01-2024
Engineering

contestada

A room that has an average ambient sound pressure level of 62 dBA and a maximum sound pressure level lasting more than a minute at 68 dBA must have a public mode signal that is at least ?
a. 73 dBA
b. 75 dBA
c. 77 dBA
d. 79 dBA

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