225 pages devoted to a complete look at speech privacy and sound masking systems, covering everything from the intent, advantages, and principles behind today's audio privacy to the specific requirements, system designs, and potential problems involved in their installation and use. The often misunderstood sound masking is the technique of using electronically generated sound to mask private conversations, distracting conversations, or annoying background sounds.

"Sound masking is employed by many industries including businesses and commercial developments, houses of worship, high security and defense agencies, and many other places where communication discretion and also eliminating disruptions is vital," says the book's author. Chanaud has a doctorate in Engineering and has worked and taught in the field of acoustics with an emphasis on sound masking technology for over fifty years. "Understanding the benefits of sound masking and how to properly implement such a system can drastically increase an end user's satisfaction."