Acoustic Sound Control

Acoustic Sound Control – Trying to Absorb or Block Sound?

When considering materials for acoustic sound control in offices, meeting rooms, recording studios home theatres and others interior environments, it needs to be understood that porous materials do not block sound.  A porous material, by definition, has many tiny interconnected voids that sound travels through.  Fiberglass insulation and open cell foam are examples of sound absorbing materials, The sound wave loses its energy through friction between the fibers of the material as it is passing through, thus promotingsound and allowing acoustic absorption

When a sound wave can be absorbed into a material, then it can pass through a material, and therefore cannot effectively blocking sound or noise.  Heavy solid materials, such as concrete block and gypsum board, are used for blocking sound from one space to another.

Fiberglass insulation, when it is used inside the gypsum board wall partition, will improve sound blocking capabilities of a wall.  You may ask why?  This is because some of the sound that gets through the first layer of gypsum board is then absorbed by the batt insulation before a diminished amount of sound contacts the second layer of

gypsum board.  Thus when fiberglass batt insulation is installed in the interior of gypsum board partition, this assembly will effectively control the sound transmission through the wall.

In commercial office spaces, suspended T-bar ceiling usually are continuous throughout the office spaces with the partitions are butting against the ceiling.  It is common to lay a layer of batt fiberglass in the ceiling space above the wall, around the perimeter of each private office.  There is no real benefit from this as the sound can still pass above in the open space, providing little or no Acoustic Sound Control.  If you were to use batt insulation in the ceiling space, you would need to stack a 4 foot width of fiberglass above the wall from the top of the wall to the underside of the roof deck to reduce enough of the sound transmission in order for it to have some effect.  It would be more efficient to just carry the sound blocking gypsum board wall partition directly up to the structure above.

When trying to control sound reflections and reverberation in commercial spaces like lobbies, board rooms, offices, music rooms, community halls and today’s residential spaces and home theatres, sound absorbing products, such as acoustic wall and ceiling panels and baffles, are used to reduce noise level and control sound within the space.  The appropriate quantity and location of acoustic treatment will reduce the reverberation time and echoes in spaces with hard reflective surfaces.  Rigid fiberglass insulation used in the manufacture of fabric acoustic panels or in stretch fabric acoustic systems effectively absorbs and control of sound reverberation.

Many factors need to be taken into consideration for proper Acoustic Sound Control and to effectively reduce interior noise levels while still being cost efficient.  Please contact us to discuss your specific circumstance and concerns to control sound and noise level within your interior environment.

For Acoustic Sound Control Solutions call us today

Leave a Reply

Your email address will not be published. Required fields are marked *