ASTM-E2638 2008

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E2638-08 Standard Test Method for Objective Measurement of the Speech Privacy Provided by a Closed Room

Published By	Publication Date	Number of Pages
ASTM	2008	8

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Categories: 91.120.20 - Acoustics in building. Sound insulation, ASTM

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Description

1.1 This test method describes a test procedure for measuring the degree of speech privacy provided by a closed room, for conversations occurring within the room, and with potential eavesdroppers located outside the room.

1.2 The degree of speech privacy measured by this method is that due to the sound insulation of the room structure the walls, floor, ceiling and any other elements of the room boundaries and to the background noise at listening positions outside the closed the room.

1.3 Potential eavesdroppers are assumed to be unaided by electronic or electroacoustic equipment, and not touching the room boundaries. Determined efforts to eavesdrop are not addressed.

1.4 The method may be applied to any enclosed room, whether specifically intended to be protected against eavesdropping or not.

1.5 The method does not set criteria for adequate speech privacy. A non-mandatory appendix provides guidance on how the results of this test method may be used to estimate the probability of an eavesdropper being able to understand speech outside a closed room, and how to set criteria for such rooms.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Sound Sources Frequency Range Measurement of Sound Pressure Levels
3	Calculations
4	Report Precision and Bias
5	Keywords X1. DETERMINATION OF CONFIDENCE INTERVALS X1.1 Source Room Levels X1.2 Received Levels X1.3 Level Differences X1.4 Background Noise Levels X1.5 Speech Privacy Class
6	X2. APPLICATION OF SPC X2.1 Background X2.2 Setting Criteria for SPC
7	X2.3 Design Stage Specification REFERENCES TABLE X2.1

Additional information

Standard Title	E2638-08 Standard Test Method for Objective Measurement of the Speech Privacy Provided by a Closed Room
Published Code	ASTM
Publication Date	2008
Pages Count	8
ICS Codes	91.120.20 - Acoustics in building. Sound insulation

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ASTM-E2638 2008

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