Low Cost Acoustic Materials

Low cost aCOUSTICal mATERIALS sUBMITTED BY: aMRIT JAMES TETE ( barch/1009/06) vIVEK BANRA ( barch/1021/06) nEERAJ BAJAJ ( barch/1023/06)

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USED OF COMMON MATERIAL FOR SOUNDPROOFING

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FLETCHER INSULATION NOISE CONTROL BATTS

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QUADRAPYRAMID

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AUDIMUTE ACOUSTIC SOUND PANELS

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SELF MADE ACOUSTIC PANEL

used of common material for soundproofing Carpeting is popular for soundproofing. • It is available in different colours and it is cheap. • Usually the rougher the surface the more sound waves it will absorb. • Carpet is heavy so 24" squares are applied instead of a very heavy piece of carpet. • complimenting colors are attach to the wall with tiny nails or large pins. • Applying carpet with glue will be expensive to repair.  Heavy fabric, drapes and blanket can also be used but will not provide as much sound dampening. • Considering adding a drape on a curtain rod over doors to add extra soundproofing to doors and closet areas. • Heavy drapes can also be added to windows to minimize noise going out and coming it. 

Use washer at the nail heads to prevent the material from tearing over the nail.  Apply duct tape to the back of the material to reinforce it 

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Boards with mineral wool backing layer Walls can also be lined with boards which employ a compressed mineral wool backing layer. These are best used with 8mm render or parge coat when combined with a blockwork wall and vary in thickness (usually between 32mm and 50mm). This type of treatment performs well when installed on the residential side of a separating wall to a communal area (hallway, corridor, stairwell).

Egg crate mattress pads offer a wavy sine wave looking surface • Egg crate mattress pads are available at any discount store or store that sells bedding. • Like carpet it can be heavy and difficult to keep from falling down. It may be best to cut it into manageable pieces before you apply in sections to the wall.

Applications •Acoustic insulation for internal framed walls and upper floors in both domestic and commercial buildings Colours and Finishes •Sound absorbing glass wool insulation comes in pink Sizes •1,160 mm x 430 mm wide and 1,160 mm x 580 mm wide batts, (also available as 1,200 mm x 600 mm wide batts for metal stud framing). Thicknesses, 50 mm, 75 mm for walls and 100 mm for upper floors General Advantages •reduce airborne sound transfer between rooms and these insulation batts •act as the ultimate barrier to heat entering buildings during hot summers, or being lost to the outside during chilly winters which reduces energy bills. • Thermal Insulation batts are designed and cut to fit 99% of ceiling joist and wall stud spacings.

QuadraPyramid 

The Quadra Pyramid presents a low profile with four pyramids creating sixteen angles of reflection on the surface of a single 2’ X 2’ panel. The unit is designed for wall or ceiling grid.

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Size: 23.75” x 23.75” x 2.75” Material: Thermoplastic Mount: Direct mount (wall or ceiling) or Drop into T-Bar Grid

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The Quadra Pyramid diffuser generates a uniform polar response over a broad frequency range. There is very little sound absorption when used as a ceiling mounted device in a standard grid. When wall mounted in a specific manner, it becomes a mid-bass absorber in the range of 250 Hz with the skirt of the bell curve extending down to 125 Hz on the low end and 315 Hz at its upper limit.

Audimute acoustic sound panels

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Audimute acoustic sound panels are available in a variety of shapes, sizes and colors . Audimute acoustical panels can also be fabricated to be used as artwork. Sizes, colors and images can be mixed and matched to create a unique designer look which will not only sound great but also look spectacular.

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Audimute acoustical panels are the perfect solution for many reverberant noise problems. Adding acoustical panels to the room will reduce reflected sound thereby dampening the echo and reverberation, creating a terrific acoustic environment. Audimute acoustic sound panels reduce volume levels by as much as 60%. Made from recycled cotton materials - No Fiberglass. Audimute acoustic panels are handmade in the USA, and offer superior performance for wall and ceiling applications. Install acoustic sound panels where low and mid frequency absorption is desired. Applications include: conference rooms, home theatres, libraries, restaurants, exhibition halls, classrooms, retail, family rooms and more.

self made acoustic panel Requirements 

4 24" x 48" (x 1/8") hardboard (pegboard w/out holes) 6 1" x 4" boards, 8' lengths (cut to 8 4' and 8 2') 8 pieces fiberglass insulation (24" x 96" x 6") poultry netting (4' x 25') polyester batting (110" x 110") burlap (3' x 21') 32 1 1/2" screws

PROCEDURE Join 2 2' boards with 2 4' boards 4 times to make 4 frames.

•Insert the fiberglass insulation, then compress it with the poultry netting • wrap each panel with the polyester batting, and attach it to the side of each frame with a staple gun. •The batting serves as a barrier for the raw fiberglass, as well as an additional absorbant layer. • The burlap was wrapped around the front and sides of the panels, and stapled to the back. •Now mount these on the walls

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Used materials can be employed for acoustical treatment which can be cheap & easy to handle. Such materials should be used in a greater scale so as to overcome money factor. These should come in common use in larger scale.