“I notice that there are different facings on fiberglass boards. What is the significance?” After checking out fiberglass boards, one may notice that boards come plain or faced. Furthermore, the facings can be different which may add to the confusion. There are two basic facings an acoustic fiberglass board may have, plain (no facing) or faced. A facing is a fiberglass fabric using the same material that is in the board, fiberglass fibers and a [...]
Acoustic fiberglass boards are a common item used and installed within buildings to help absorb sound. More specifically, when acoustic fiberglass boards are added to a room, occupants will hear less echoes than if the walls, floor and ceiling are bare. Figuring out how many acoustic boards/panels to install can be scientifically calculated with the help of an acoustic consultant or acoustician or, in a DIY type setting, boards can be put on the wall [...]
The human ear interprets sound through a complex process that involves several parts of the ear and the brain. Here's a more detailed explanation of how sound is interpreted: Sound waves enter the ear: Sound waves are collected by the outer ear, travel through the ear canal, and cause the eardrum to vibrate. Vibration of the eardrum: The vibration of the eardrum causes the three tiny bones in the middle ear (the hammer, anvil, and [...]
What are the top 10 Noisiest cities n the world? Discover what these are in this fun little blog. 1. Madrid, Spain Madrid has nightlife, which produces a tremendous amount of loud noise. 45 decibels doesn’t seem like much, but try sleeping through it at 2 am. 2. New York, New York The Big Apple has approximately eight million residents and over 50 million tourists a year so it is bound to be noisy! While [...]
With the NBA Finals taking place and fans cheering for their favorite team to win- GO Cavs! It got us thinking what the loudest sports stadiums in the world are. If you are curious how loud fans can be, take a look at the top five loudest sports stadiums in the world below! We are shocked at the decibel levels that some of the stadiums were able to reach! After reading this, you may want [...]
Jobs are an integral part of our lives; they help us to support and provide for our families. Millions of people are exposed to dangerous levels of noise pollution in the workplace and don’t even realize it. Working in an industry that has harmful noise levels above 80-90 decibels (dB) can increase the chances of noise-induced hearing loss (NIHL). Overexposure to harmful noises can also increase the chances of tinnitus, which is ringing or buzzing [...]
Heating, ventilation, and air conditioning (HVAC) systems are a crucial part of any building. Whether it’s a small house, a medium-sized office building, or a large manufacturing facility. HVAC systems often generate unpleasant noise pollution, typically in two distinct ways. Airflow is a big source of noise in HVAC systems. Generally, the noise is produced by a large volume of air generated from fans or blowers, in order to propel air throughout the system. Another [...]
Sound Part five: Our fifth acoustic technical note will discuss noise control techniques at the source, the transmission path, and protective measures at the receiver. In general, noise control measures can be classified into three categories. Noise Control at the source Noise control in the transmission path Use of protective measure against noise in the receiver The method or combination depends on the magnitude of the required noise reduction and the economic and operational considerations. [...]
Sound Part four: Part four of our technical notes will explain noise and the effects of noise pollution. You want your home to be an oasis, a place where your family can relax and disconnect from the hustle and bustle of the outside world. Would you like to hear your noisy neighbors blaring their radio for the third time of the week while in your own home? My guess is most likely not; it’s a [...]
Sound Part Three: The third part of our acoustical technical notes will discuss frequency weightings and octave bands. Frequency Weightings: Frequency weightings also known as frequency networks and frequency filters, correlate measured sound levels with the subjective human response. The human ear is frequency selective, between 500 Hz and 6 kHz, our ears are very sensitive compared with lower and higher frequencies. The frequency weightings used in sound level meters are often related to the [...]
