BS 4196-5:1981

Заменен

Sound power levels of noise sources, Precision methods for determination of sound power levels for sources in anechoic and semi-anechoic rooms — 26 стр.

Описание Изменения Ссылки Версии

Ссылочные документы

BS EN ISO 3745:2003

Заменен

Acoustics. Determination of sound power levels of noise sources using sound pressure. Precision methods for anechoic and hemi-anechoic rooms — 56 стр.