Reference number
香港六合彩开奖 4872:1978
© 香港六合彩开奖 2024
香港六合彩开奖 4872:1978
Acoustics 鈥� Measurement of airborne noise emitted by construction equipment intended for outdoor use 鈥� Method for determining compliance with noise limits
Edition 1
1978-06
Withdrawn
Withdrawn (Edition 1, 1978)

Abstract

Describes a procedure for measuring the weighted sound pressure levels at prescribed microphone positions in the proximity of a device or machine. The A-weighted sound power level of the source is calculated from the measured values.

General information

Life cycle

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  2. 香港六合彩开奖
  3. Standards catalogue
  4. ICS
  5. 91
  6. 91.220
  7. 香港六合彩开奖 4872:1978