دانلود استاندارد ANSI ASA S12.9

خرید استاندارد ANSI/ASA S12.9 PART 5

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The purpose of the Acoustical Society of America is to increase the knowledge of acoustics and to promote its practical applications. Established in 1929, the present membership includes leaders in acoustics worldwide. Diverse fields of interest in acoustics include physics, engineering, architecture, noise, oceanography, biology, speech and hearing, psychology and music. For more infomation, visit the ASA Home Page.

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American National Standard Quantities and Procedures for Description and Measurement of Environmental Sound – Part 5: Sound Level Descriptors for Determination of Compatible Land Use

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دانلود رایگان استاندارد ASA – ANSI/ASA S12.9 PART 5

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ASA – ANSI/ASA S12.9 PART 5
American National Standard Quantities and Procedures for Description and Measurement of Environmental Sound – Part 5: Sound Level Descriptors for Determination of Compatible Land Use

درباره استاندارد ASA S12.9

This standard provides a method to predict sleep disturbance in terms of percent awakenings associated with the noise level of events in terms of sound exposure level (SEL). This standard was developed using field studies of behavioral awakening primarily in homes near areas of routine aircraft takeoff and landing operations. The database used in derivation of the dose-response relationship consists of more than 5,000 subject-nights of observations in a variety of communities in the United States.

خرید استاندارد ASA S12.9

 The American National Standards Institute, Inc. (ANSI) is the national coordinator of
voluntary standards development and the clearinghouse in the U.S.A. for
information on national and international standards.
The Acoustical Society of America (ASA) is an organization of scientists and
engineers formed in 1929 to increase and diffuse the knowledge of acoustics and
to promote its practical applications.

دانلود استاندارد ANSI/ASA S12.9 PART 5

 This Standard provides guidance on the compatibility of various human uses of land with the acoustical environment. This Standard uses the annual average of the total day-night adjusted sound exposure or the annual average of the adjusted day-night average sound level to characterize the acoustical environment. The annual average of the total day-night adjusted sound exposure and annual average of
the adjusted day-night average sound level are explained in Part 4 of ANSI S12.9. An informative annex
provides guidance for designation of land uses compatible with existing or predicted annual averages of
the total day-night adjusted sound exposure or annual average of the adjusted day-night average sound
level. Ranges of the annual average of the total day-night adjusted sound exposure or annual average of
the adjusted day-night average sound level are outlined within which a specific region of compatibility may
be drawn. These ranges take into consideration the transmission loss in sound level from outside to inside
buildings as commonly constructed in that locality and living habits there.