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Resilient Channels – How Metal Absorbs Sound Waves

April 1, 1996   
Anyone who’s ever shared a wall with someone else has probably wondered if the walls were intentionally thin, or the neighbors intentionally loud. Often the assumption is that the walls between dwellings simply need to be thicker to muffle sound.
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Audio Considerations in Teleconferencing – “Can You Hear Me?”

June 1, 1995   
Teleconferencing, holding meetings by an electronic means, is one of the fastest growing industries in the world. The word “teleconferencing” means different things to different people. Teleconferencing can range from a conference call with speaker phones to a system with
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Binauralization™ — Now You Can HEAR How it Will Sound BEFORE Construction Starts!

April 1, 1995   
How often have you wondered what a room was going to sound like before it was built? How would it sound if the walls were parallel and not canted? Are all of the acoustical room finishes really required? Will there
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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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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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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