School Classroom Acoustics, Sound reflection and reverberation time, Acoustical Contractors and Acoustical Products dealers imported from USA

School Classroom Acoustics and ANSI Standard 

  ANSI Standard S 12.60 on Classroom Acoustics

On any given day, several thousand students throughout the country do not comprehend even 25 to 30 percent of the subjects that are being taught in classrooms. What happens is that too much reverberation and noise in a classroom affects a student’s capacity to listen to what is being said by their teacher.

Before we review the standard under discussion, it’s imperative to know the characteristics of sound encountered in the classroom that influences a student’s capability to listen and learn.

Direct Sound Control

The sound carrying the teacher’s voice traveling from the teacher directly to the student is known as direct sound. This is most beneficial as far as speech intelligibility is concerned because it is not hindered by any object inside the space, making it distinct and clear.

Reflected Sound

A sound that is reflected takes more time to arrive at the listener’s station compared to direct sound for the reason that its route to the listener is lengthier. Reflected sound is beneficial or otherwise depending on the delay in time.

Reverberation Time

The general effect of sound when it gets reflected in a room is known as reverberation, and the actual time taken by the reflected sound to fade out and become inaudible is termed as reverberation time. The shorter the reverberation time the better is speech intelligibility.

Background Noise

Any kind of sound produced outside the school building, like playground activity, planes and traffic can be said to be background noise. It usually enters the classroom through the windows. Inside the building, a system like H V A C and corridor noise can also produce background noise.

New ANSI Standard

ANSI Standard S12.60 is meant for classroom acoustics and deals with the issues of both background noise and reverberation time and the consequence on intelligibility of speech and specifies the maximum allowable levels on them.

As per the standard, the maximum permissible reverberation time in a furnished, unoccupied classroom having a volume below 10,000 cubic feet should be 0.6 seconds, and for a room having volume from 10,000 to 20,000 cubic feet it should be 0.7 seconds. For background noise the permissible level of sound allowed for the same classroom should not be more than 35 decibels (dBA).

The acoustical performance norms and design conditions specified by the standard is applicable right from the design and construction stages to all new learning spaces and classrooms of small and medium sizes, and, also to reconstruction and design of renovation and if practical, to the design and reconstruction of refurbished spaces as well.

Presently, the ANSI standard is not compulsory unless enforced by a regulation, code or ordinance. But, the school administration may require that the standard be complied with as per their building documents for newly constructed schools. The ANSI S 12.60 Standard is freely downloadable online.

If you want to soundproof your home or workplace you can contact Interior Game.

Our Products and services

sound absorbing wall tiles, polyester acoustic panels, acoustic hanging panels, studio sound absorbing panels, hanging acoustical baffles, what does acoustic panels do, recording studio in Chennai, where to place sound absorbing panels, ceiling baffles sound absorption, decorative sound absorbing panels, home theater essentials, sonex, how to place sound absorbing panels, sound isolation enclosures, acoustic panel fabric, noise reducing carpet, modular kitchen in kochi, suspended sound absorbing panels, where to place acoustic panels in home theater, textile design studios in Bangalore, inter-techno, noise reduction window inserts, window inserts for noise reduction, decorative sound absorbing wall panels, outdoor sound absorbing panels, interior designers in Trivandrum, thick foam underlay, acoustic sound absorbing panels, how to fix acoustic panels to wall, studio acoustic panels, apartments interior designers in Bangalore, sound absorbing panels for ceilings, hanging acoustic panels,  roof windows with integral blinds, sound absorbing foam, how do sound absorbing panels work, acoustic panels for studio, absorbing sound with acoustic panels, sound absorbing acoustic panels, low cost interior designers in Hyderabad, hanging sound baffles, how many acoustic panels do i need, auditorium acoustic panels, acoustic isolation panels, residential interior designers in Bangalore, large sound absorbing panels, sound absorbent, how to make acoustic sound panels, sound absorption panels, sound absorption panels for home, Interior design kochi, sound deadening wall covering, modern sound absorbing panels, foam soundproofing, acoustic consultants dubai, commercial interiors in Chennai, best material for acoustic panels, acoustic sound panels for walls, sound absorbing panels for home, acoustic sound absorbing wall panels, sound absorbing ceiling panels, acoustic sound baffles, sound level meter, do sound absorbing panels work, sound absorbing ceiling, buy sound absorbing panels, where to buy sound absorbing panels, best interior designers in Hyderabad, interior designs in Hyderabad, soundproofing foam, sound absorbing fabric, fabric for acoustic panels, best interior designers in Coimbatore, what do acoustic panels do, fabric for sound absorption panels, sound absorbing acoustic panel, does acoustic foam block sound, sound deadening wall coverings, industrial sound absorbing panels, sound dampening wall panels, office sound absorbing panels, sound dampening panels, soundproofing walls UK, fiber cement tiles, interior decorator in Chennai, interior designers in kochi, top 10 interior designers in Bangalore, conference acoustics, fabric acoustic panels, acoustic panels for apartment, home interior designers in Kerala, industrial noise control products, sound absorbing wall panels, what are acoustic panels used for, acoustic foam UK, acoustic foam, acoustic board suppliers, wooden flooring underlays and moisture barriers,