Many people find the world of acoustical treatments to be confusing and overwhelming. Here on the Acoustical Solutions Sound Advice Blog, we will concentrate on presenting solutions to typical acoustical problems and discuss relevant topics on the subject.
The posts here will be related general sound and noise control topics like blocking sound, absorbing sound, or diffusing sound. We will also provide information on how acoustical materials can be used or applied to specific applications.
In schools, adequate acoustics are essential.
Classrooms are the most important place in a school to have proper sound quality and speech intelligibility, but there are a number of other places in which schools needacoustical treatment.
From cafeterias and gymnasiums to band rooms and auditoriums, we’ve treated every space in a school. We even stamp out classroom noise by treating school parking lots and courtyards where large chillers or generators are often far too loud.
We’ve all seen soundbarriers or sound walls along highways, neighborhoods, construction sites and many other noisy areas. They’re normally concrete, wood, plastic or even vinyl blankets. Read about our various outdoor soundproofing products here.
Most are quite effective at reducing highway noise, construction noise and many other forms of noise pollution, but depending on their properties, they could be causing more problems than they’re fixing.
This article will discuss the properties that should be considered when shopping for one of these sound barriers, specifically reflective vs. absorptive properties.
The 1% Rule: A 1% opening will allow up to 50% of sound to pass through a wall, door, sound barrier, etc.
This rule comes into play most often when it comes to doors. Whether a regular door or a soundproof door, small openings almost always exist at the bottom, top and sides.
It is because of the 1% Rule that these openings around doors effectively cancel out any acoustic functionality.
For example, a 1/8″ opening around all four sides of an acoustic door(STC rating of 56) can significantly reduce the door’s STC rating (to as low as 21), which means the door is close to useless acoustically.