BS 5679 78th Edition, December 29, 1978
Method (precision) for free-field calibration of one-inch standard condenser microphones by the reciprocity technique
Includes all amendments and changes through Reaffirmation Notice , July 15, 1988
Additional Comments: SAME AS IEC 60486 * W/D S/S BY BS EN 61094-3
Published By:British Standards Institution (BSI)
Method for calibration of microphones used as laboratory standards.