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Sound Masking

June 1, 1994   
Whether you call it white noise, pink noise or NC systems, sound masking is probably the only time that an acoustical consultant will admit that some noise is good.  The shift to open plan offices and demountable partitions from the
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Residential Sound Isolation

June 1, 1994   
We frequently get calls from owners and tenants who wish to improve the sound isolation between apartments and condominiums, particularly in older units.  The call often begins with, “I want something I can spray on to the wall to soundproof
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Peach Piracy?

April 1, 1994   
Speech privacy (peach piracy) exists when a conversation cannot be understood even if it can be heard. There are 4 levels of speech privacy; normal, confidential, inaudibility and none. Normal speech privacy exists when someone can only partially understand the
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Front Vs. Rear Projection – Questions and Answers

April 1, 1994   
From an entertainment point of view there is probably nothing more impressive than going to a first run cinema (front projection) and being enveloped by the large screen and catchy plot. That’s great if the purpose is for entertainment or
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Tech Notes: Hydraulic Pile Drivers Work Out of a Tight Spot, Quietly

September 1, 1993   
Driving piles is typically considered one of the noisiest, most disruptive activities at a construction job site.  The increased noise and vibration levels can disrupt ongoing client activity as well as adjacent neighbors.  However, new hydraulic pile-driving equipment may change
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Tech Notes: Ceiling Mounted Microphones – A Solution or a Problem?

June 1, 1993   
With hopes of eliminating tabletop or podium microphones, End Users, Designers and Architects frequently ask, “What about sticking them on the ceiling?”  Usually, what seems like an easy solution is not the best solution. Ceiling mounted microphones are not recommended
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Acoustical Terms – What Are They/What Do They Mean?

June 1, 1993   
Recently we were asked “What is the difference between STC, NRC, and NC and are they interrelated?” STC or Sound Transmission Class, describes how much sound a wall or a floor/ceiling construction will block from one room to the next.
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Office Acoustics

March 1, 1993   
A question we are frequently asked by Project Managers is how can we improve the acoustical privacy between offices and work stations? The level of acoustical privacy is defined as the amount of conversation that can be heard and understood
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New Acoustical Product at AIA National Convention ’92!

June 1, 1992   
While attending the recent AIA ’92 National Convention in Boston we took the opportunity to search the trade floor for new building materials with acoustical benefits.  The following summarizes our finds: Among the more promising displays were acoustical wall and
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Acoustics and ADA

June 1, 1992   
The Americans with Disabilities Act (ADA) has stirred up much controversy over the past year. This article will provide some practical guidelines for the public accommodations portion of these requirements. The new ADA hearing assistance requirements are not really new