BS 6111:1981

Заменен

Specification for reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts — 12 стр.

Описание Изменения Ссылки Версии

Ссылочные документы

BS EN 60318-5:2006

Действует

Electroacoustics. Simulators of human head and ear. 2 cm$u3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts — 18 стр.