Specification for a reference zero for the calibration of pure-tone audiometers. Data for a wide-band artificial ear complying with BS 4669.

UNGÜLTIG herausgegeben am 28.6.1972

Specification for a reference zero for the calibration of pure-tone audiometers. Normal threshold of hearing for pure tones by bone conduction.

UNGÜLTIG herausgegeben am 25.7.1972

Standard reference zero for the calibration of pure tone air conduction audiometers. Specification for a standard reference zero using an acoustic coupler complying with BS 4668.

UNGÜLTIG herausgegeben am 29.2.1988

Acoustics. Reference zero for the calibration of audiometric equipment. Specification for a standard reference zero using an artificial ear complying with BS 4669.

UNGÜLTIG herausgegeben am 29.2.1988

Standard reference zero for the calibration of pure tone air conduction audiometers. Specification for a standard reference zero at frequencies intermediate between those given in Parts 5 and 6 of BS 2497.

UNGÜLTIG herausgegeben am 29.2.1988

The normal threshold of hearing for pure tones by earphone listening.

UNGÜLTIG herausgegeben am 30.7.1954

Recommendations for ascertaining and expressing the performance of loudspeakers by objective measurements.

UNGÜLTIG herausgegeben am 1.1.1954

Hot-applied joint sealant systems for concrete pavements. Specification for joint sealants.

UNGÜLTIG herausgegeben am 15.8.1993

Hot-applied joint sealant systems for concrete pavements. Code of practice for the application and use of joint sealants.

UNGÜLTIG herausgegeben am 1.4.1992

Hot-applied joint sealant systems for concrete pavements. Methods of test.

UNGÜLTIG herausgegeben am 15.8.1993