BS 6840-5(1990) : 1990被替代
SOUND SYSTEM EQUIPMENT - METHODS FOR SPECIFYING AND MEASURING THE CHARACTERISTICS OF LOUDSPEAKERS
出版：British Standards Institution
专家解读视频
Describes sound system loudspeakers, treated as entirely passive elements. Loudspeakers with built in amplifiers are excluded. Covers conditions, test signals, acoustical environment, unwanted acoustical and electrical noise, positioning of loudspeaker and measuring microphone, measuring equipment, accuracy of acoustical measurement, mounting of loudspeakers, standard baffle, preconditioning, type description, marking of terminals and controls, reference plane, reference point and reference axis, impedance and derivative characteristics, input voltage, input electrical power, frequency characteristics, sound pressure under free field and half space free field conditions, response under free field and half space free field conditions, output power, directional characteristics and amplitude nonlinearity.
