Achieving Effective Acoustics in Hospitals – Block Noise and Cover Noise WITH Acoustical products and materials

Achieving Effective Acoustics in Hospitals – Block Noise and Cover Noise

Block Noise

Traditionally walls are used for blocking noise. While completely they will not prevent transfer of noise from a side to another, walls will lessen its volume when it passes through. The Sound Transmission Class (STC) rating of the wall denotes how well it lessens airborne noise. The rating of this must be “real-world” instead of lab-tested. The interior windows and doors STC rating must at least comply with the wall standard.

But, blocking includes more than walls since not only does noise travel via air; also it can pass via, over, around, and under obstructions, and through ways of penetrations. Structural elements, like ventilation ducts, should be properly located and treated for preventing cross-talk from one room to another. To the doors addition of sweeps or gasket material can be done based on the speech privacy level required while they are closed.

Also blocking of noise transmission can be done via a layout well-planned. Make sure machines (e.g. ice dispensers or medication) and areas of high-activity are alienated from areas needing quiet, like patient rooms.

Cover Noise

Majority of people know at least few factors of these initial two strategies and suppose they will attain the preferred levels of noise control and speech privacy if they just build “adequate” walls or provide “sufficient” absorption. This viewpoint is typically connected with the opinion that efficient acoustics can only be attained when in the space the general volume is low to the maximum extent possible.

But, similar to other ergonomic factors like temperature and lighting, actually there is a zone of comfort for the sound volume. This zone of comfort can be attained by regulating the noise floor. This is the level of constant background sound characterizing the space. If this floor is low it is easier to hear noises and conversations, also those that are comparatively less in volume or emerge at a significant distance from the hearer.

Providing a more consistent and higher baseline level of volume can effortlessly be attained by installing a system of sound-masking in the space. This is the least understood or known method of noise control, though extensively it has been used for decades, mainly in commercial offices.

A system of sound-masking comprises of loudspeakers in series, installed in a pattern like a grid over the ceiling, and a process of controlling their output and zoning. The sound distributed by the loudspeakers is unobtrusive and continuous, preserving the noise floor at a proper volume. When correctly implemented, it is very effective at concealing speech. Any noises lower than the masking sound level is also covered up. Besides, it lessens the impact of boisterous noises by decreasing the extent of change of volumes from baseline to peak.

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Home Recording Studio soundproofing Tips and Guidance

Home Studio Soundproofing Tips

For those who cannot afford a huge mansion with a studio, soundproofing can be the key to a happy home. A quality soundproofing done for your home studio will have a great impact on your recordings. You will be protected from undesired sound effects. This will results in lesser background distractions that you may find reflected in your recordings. Give a thought about how to soundproof the room you’re going to convert into a studio. Acoustic treatment will block distortion and reverberations that will affect your work. But realize one fact: a room in a shared accommodation will not be sufficiently isolated to eliminate all the sound leaks and the sound of a drum is going to be difficult to trap in this set up. You may not have the largest or most professional type of studio but, if you approach the issue professionally, you can solve a lot of issues and everyone will be happy.

How to Treat Walls and Floors

For the floor, install a quality acoustic foam underlay, and then add a good thick carpet on top. Wooden effect flooring though may appear chic will not absorb the sound between floors as good as the above. For walls, thick velvet curtains are good. Even old woven rugs or blankets will do. Hang them at a distance of five to ten centimeter away from the walls and you will discover that much of the sounds that bounce back into the room are dampened.

Acoustical Windows and Doors

If your home has a basement room to be used as a home studio, you’re lucky but you’ll have to soundproof windows and doors which pose serious problems for soundproofing a room. Windows are easier to be tackled effectively, by attaching large wooden shutters over the frames using fixings similar to the ones applied to sash windows. When making shutters, be sure to choose a heavy wood and use enough fastenings to ensure they stay mounted.

Doors pose more problems. The best solution is to have double doors, but you may not find sufficient space for fixing it in a home studio. But there is a way out again, select a heavy material, a fire door or solid wood instead of the standard domestic ones. Ensure that the frames sit with a very good tight fit, because it is obvious that gaps between the door and frame will allow the sound to escape. Seal the gaps if any using sealing tapes and adhesive strips.

Conclusion

It is likely that you may have to make some compromises when setting up a home studio. You may not get the same quality of sound as with dedicated room treated by a soundproofing expert, but the above simple solutions can make a perceptible difference.

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