This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A classification of assemblies (based on lab testing) in their ability to dampen sound in airborne ... (Read 292 times)

Collmarie

  • Hero Member
  • *****
  • Posts: 569
on: Aug 28, 2018
A classification of assemblies (based on lab testing) in their ability to dampen sound in airborne transmission is referred to as:
 
   NRC ratings
   STC ratings
   NC ratings
   All of above

Question 2

Uniform background sound can be achieved by:
 
   Installing a sound masking system (sometimes
  called white noise) into the plenum space of a
  building or room
   Allowing the HVAC system to continually blow air
   Manipulating the placement of materials that can redirect sound waves
   Using an audio system tuned into soft music


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Reply #1 on: Aug 28, 2018
Answer to Question 1

STC ratings

Answer to Question 2

Installing a sound masking system
(sometimes called white noise) into the plenum
space of a building or room


Collmarie

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Aug 28, 2018
Thanks


joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Reply #3 on: Aug 28, 2018
Welcome :)


« previous next »
 

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

A recombination-based map of one of the chromosomes of Drosophila A recombination-based map of one of the chromosomes of Drosophila
Primary School Attendance in World Regions Attending primary school is common but not universal, wo Primary School Attendance in World Regions Attending primary school is common but not universal, wo
International Television Viewing Rates in Childhood In most developed countries, children watch TV International Television Viewing Rates in Childhood In most developed countries, children watch TV
Performing Transmission-Based Precaution: Isolation Techniques Performing Transmission-Based Precaution: Isolation Techniques
The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets. The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets.
All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ... All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ...
Video: Green alga life cycle Animation

For a complete list of videos, visit our video library