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AMERICA’S TOTAL NOISE CONTROL COMPANY PowerPoint Presentation
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AMERICA’S TOTAL NOISE CONTROL COMPANY

AMERICA’S TOTAL NOISE CONTROL COMPANY

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AMERICA’S TOTAL NOISE CONTROL COMPANY

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  1. AMERICA’S TOTAL NOISE CONTROL COMPANY

  2. Sound pressure is measured in a unit called decibels and is often abbreviated dB. Zero decibels is the lowest sound a person can hear. • A pin drop is • 10 dB • A shower is • 70 dB • A squeeze toy is • 90 dB Each ten decibel increment means the harm to you is amplified ten times. Noise of 85 dB is considered harmful to a person's ears, and protection is recommended to prevent damage to the eardrum, according to OSHA Standards. A person may not realize this since the ear begins to hurt at about 120 decibels.

  3. PLANNING CHECKLIST ENGINEERING CONTROLS • How much noise reduction is required? • What frequency needs to be attenuated? • What are the operational considerations? • What are the transmission paths? • What is the physical environment? • What are the aesthetic requirements?

  4. NOISE CONTROL OPTIONS ENGINEERING CONTROLS • Absorbers • Barriers • Composites • Enclosures • Lag Treatment

  5. Sound absorbers are soft, porous, open-celled materials such as Baffles or Quilted Fiberglass blankets that reduce the reflection of sound waves by allowing them to soak in and dissipate. ABSORBERS

  6. Noise Barriers combine mass, flexibility and limpness to block noise from transmitting from one area to another. Barriers are available either non-reinforced or reinforced. BARRIERS Barriers are available in various densities

  7. Acoustical curtain panels combine both Noise Barrier & Sound Absorber materials. Typically, they offer the maximum Noise Reduction per dollar spent…up to a 22 dB(A) noise reduction There are typically two common types of acoustical curtain panels: COMPOSITES

  8. A reinforced loaded vinyl noise barrier with a quilted fiberglass absorber on one side. Superior acoustical performance and maximum durability. Curtain panels are constructed with grommets across the top and Velcro along the vertical edges. BARRIER BACKED COMPOSITE

  9. A non-reinforced loaded vinyl noise barrier sandwiched between two layers of quilted fiberglass. Use for sound absorption on both sides of product, or as a decoupled/barrier/absorber acoustical liner. Curtain panels are constructed with grommets across the top and Velcro along the vertical edges. BARRIER SEPTUM COMPOSITE

  10. Unlimited size, design and features Multiple panel types to meet your specific requirements Interior or exterior use Electric posts available for outlets and switches Single leafand double leafdoors Sliding doors, pocket doorsand bi-folddoorsavailable Hinged and removable access plugs Removable panels Single glazed or double glazed windows Modular panels with grommets at top and velcro seals along each edge allow for any configuration required A variety of mounting hardware allows for floor, wall, ceiling, or suspended acoustical curtain framing options Open topped enclosures and portable enclosures Complete enclosures with roofs and ventilation packages ENCLOSURES

  11. Used to wrap noisy pipes and ducts to block the noise that transmits through the walls of the pipe or duct as air or other contents move through it. LAG TREATMENT

  12. METHODS ENGINEERING CONTROLS • Source Treatment • Transmission Path Treatment • Receiver Treatment

  13. ACOUSTICAL ENCLOSURE - METAL SOURCE TREATMENT When to use: radiated machine noise Estimated Noise Reduction: 15-25 dba

  14. ACOUSTICAL ENCLOSURE - CURTAIN SOURCE TREATMENT When to use: radiated machine noise Estimated Noise Reduction: 8-12 dba

  15. VIBRATION ISOLATORS SOURCE TREATMENT When to use: structural vibration noise Estimated Noise Reduction: 3-10 dba

  16. DUCT LAGGING SOURCE TREATMENT When to use: radiated HVAC noise Estimated Noise Reduction: 5-15 dba

  17. BARRIER WALL PATH TREATMENT When to use: directional radiated machine noise Estimated Noise Reduction: 10-15 dba

  18. SILENCERS/LOUVERS PATH TREATMENT When to use: HVAC intake/exhaust noise and air blowoff Estimated Noise Reduction: 5-25 dba

  19. ABSORPTION PANELS PATH TREATMENT When to use: reverberation noise Estimated Noise Reduction: 2-5 dba

  20. BAFFLES PATH TREATMENT When to use: reverberation noise Estimated Noise Reduction: 2-5 dba

  21. ISOLATION ROOM RECEIVER TREATMENT When to use: radiated machine noise Estimated Noise Reduction: 15-25 dba

  22. www.ies2000.com