CCSG Inc - Voice Arrest - Achieving Speech Privacy

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		Achieving Speech Privacy
		To achieve speech Privacy in any environment, whether to comply with the new privacy laws, or to simply improve worker productivity, engineers and consultants use a method called the "A B C's". This acronym describes the three factors needed to achieve "speech privacy".



		Absorption - of sound waves (such as by using high-NRC rated ceiling tiles) Blocking - of sound waves (such as by using high-STC rated panels, partitions, walls, windows, etc.) Covering - of sound waves ( such as adding a source of unstructured, continuous, low-level background sound)
How it Works
Speech Privacy
Indirect
Direct
HIPAA
CA-SB1 - GLBA
FACTA		We feel this acronym should be the "C A B's" as past and recent studies have proven that "Covering" or "Masking" will obtain the most gain over the other two, with less expenses, interruptions, downtime and cost. To understand the levels of speech privacy, we must first understand the 2 elements used to determine the levels of speech privacy. These 2 Elements are:
Specs
Features




		AI - Articulation Index, is the measure of intelligibility of speech that is overheard by a listener. Measurement is expressed as a percentage between 0 and 1. PI - Privacy Index, is the measure of privacy of speech, or the lack of intelligibility by a listener. AI = (1 - AI) x 100% The ASTM (American Society for Testing and Materials, clearly defines the 4 levels of speech privacy in document E1130-90.








		Confidential Privacy. This would consist of an area with an AI less than 0.05, or a PI greater than 95%. Normal Privacy. This would consist of an area with an AI of 0.05 to 0.20, or a PI of 80% to 95%. Unacceptable Privacy. This would consist of an area with an AI of 0.20 to 0.40, or a PI of 60% to 80%. No Privacy. This would consist of an area with an AI greater than 0.40, or a PI less than 60%.








		Ever heard the staying: "It's so quiet in here, I could hear a pin drop"?



		It is not that the pin is extremely loud, but that the area is extremely quiet, making ALL sounds appear to be much louder, including voices.

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(904)626-9854 \| (904)641-9854 \| Jacksonville \| Florida \| 32246 Last updated November 16, 2008