subject
Engineering, 25.04.2020 01:47 jefarmjefarm9659

01. O tempo de reverberação (TR) é um indicador de excelência acústica, e cada ambiente deve ser avaliado segundo a sua necessidade. O tempo de reverberação (TR) é o tempo que o som permanece audível depois de cessada a fonte e está relacionado à capacidade de absorção dos materiais das superfícies expostas. Analise as afirmativas a seguir:

I – A indicação do TR ótimo de um ambiente, segundo a NBR 12179 (1992), é obtida através do cruzamento de dados como área e volume dele.

II – Se um ambiente tem um valor de TR alto e preciso baixar, a aplicação de materiais absorventes nas superfícies pode resolver.

III – O TR somente pode ser calculado para ambientes prontos, nunca projetos.

IV – Para fazer o cálculo do TR através da fórmula de Sabine, é essencial conhecer o volume total do ambiente.

V – O conforto acústico nas grandes cidades é extremamente importante, e avaliar o TR de praças e espaços aberto é uma forma de garantir que esses sejam confortáveis e adequados.

Considerando a avaliação do TR de um ambiente, verifique quais asserções são verdadeiras e assinale a alternativa correta:

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
question
Engineering, 04.07.2019 19:10
How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?
Answers: 2
question
Engineering, 04.07.2019 19:20
Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.
Answers: 3
question
Engineering, 06.07.2019 03:10
Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg. a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?
Answers: 1
You know the right answer?
01. O tempo de reverberação (TR) é um indicador de excelência acústica, e cada ambiente deve ser ava...
Questions
question
Geography, 24.10.2019 03:10
question
English, 24.10.2019 03:10
question
Mathematics, 24.10.2019 03:10
Questions on the website: 13722361