Academic Resources for Acousticians

CCR ASSOCIATES is pleased to be able to provide academic resources for acousticians from leaders in the field.

Tools for Analyzing Sound Sources, by Robert Chanaud, Ph.D. is available to view or download at www.ccrllc.com.

Robert C. Chanaud, Ph.D. is a world-renowned acoustician who specializes in advanced sound masking solutions, and has been instrumental in educating our clients on the benefits of an integrated acoustical plan for noise control. Dr. Chanaud’s background in Acoustics and Fluid Mechanics assists our team in recommending solutions that are technically efficient and cost effective. Over the past 25 years, his expertise has been sought after by such organizations as IBM and the EPA, the University of Michigan, as well as the Acoustical Society of America. In addition to numerous patents and publications, Dr. Chanaud received a Doctorate Degree from Purdue University and a M.S. from U.C.L.A.

Setting the Stage for Speech Privacy

It pays to keep a common sense approach to office acoustics. There are numerous practical and economical ways to cut down on unwanted noise transmission that are not only highly effective, but necessary first steps towards building a desirable acoustic environment. Remediation strategies such as electronic sound masking can only be effective if the underlying structural environment is relatively sound.

As acoustical consultants, CCR ASSOCIATES is frequently called in to assess ongoing acoustical problems in currently occupied office space. Once on site, it often becomes apparent that many acoustical problems are due to structural/design problems in the office, and that these design problems must be resolved before one can accurately assess the potential effectiveness of sound masking. Wall and ceiling voids, open air grills, low/no cubicle walls, poorly sealing doors and windows, poorly designed workstations, etc. are all very common. Common sense dictates that sound will transmit through openings, and that these openings should be sealed, if possible.


The chart above demonstrates how important it is to fix any underlying structural acoustical problems before attempting further remediation. Until an office reaches a Privacy Index of 60 or above, little acoustical benefit can be gained from sound masking or other electronic acoustical remediation. Above 60, increases in PI through sound masking or other means are considerably more effective.

With office acoustics, avoid the "quick fix"

It is tempting, when presented with a problem, to turn to the quickest solution. However, when it comes to acoustics in office environments, a "quick fix" often isn't quick or a fix.

The truth is, acoustics can be complicated. Typical office environments have numerous factors which can effect acoustical outcomes:

• Multiple sound sources which fluctuate in volume throughout the day
  
• Multiple surfaces with differing acoustical qualities, including carpeting, ceiling tiles, walls, cubicle partitions, and office furniture
  
• Varying construction methods, including use of demising and partition walls, ventilation and duct work, ceiling type, and lighting
  
• Office size, shape, and layout of work space
  
• Intended use of space (reception area, team work environment, quiet "heads down" work environment, private discussion area, large meeting area, audiovisual area, etc.)
  

Without careful planning it is very easy to add more noise to the situation, without effectively treating the problem. Watch out for "quick fix" remediation strategies, such as plug-and-play "white noise" speakers or other stand-alone products. These strategies are rarely effective, and can often create further acoustical distraction, as without careful calibration it is unlikely the sounds generated would coordinate with the particular set of acoustical factors within your office environment. To accurately measure, assess the effect, and plan for successful acoustics in your office, turn to an acoustical consultant.