BS 5944-1:1992-Measurement of airborne noise from hydraulic fluid power systems and components Part 1: Method of test for pumps - London : British Standards Institution, 1992. - 26 p. ISBN: 0580213951 Subjects--Topical Terms: Hydraulic transmission systems, Hydraulic equipment, Pumps, Noise (environmental), Sound intensity, Acoustic measurement, Testing conditions, Acoustic testing, Measurement characteristics, Test equipment, Errors, Standard deviation, Grades (quality), Position.