Standard reference zero for the calibration of pure tone air conduction audiometers Specification a standard at frequencies intermediate between those given in Parts 5 and 6 BS 2497
€172.00
High-pass and low-pass filters for electro-acoustical measurements
€24.39
Measurement of the R. M. S. value in sound system equipment; test methode for measuring devices
Sound carrier for the hearing test using speech in accordance with DIN 45621 (recording 1969)
Dimensions of plugs for hearing aids
Sound level meters
€77.20
Acoustic, electroacoustic; standard frequencies for measurements
€34.30
Hearing aids; hearing aids with induction pick-up coil input; identical with IEC 60118-1, edition 1983
Hearing aids; hearing aids with automatic gain control circuits; identical with IEC 60118-2, edition 1983
€41.78
Sclaes and sizes for plotting frequency characteristics and polar diagrams; identical with IEC 60263:1982
Audiometers - Part 2: Equipment for speech audiometry
€69.00
ELECTROACUSTICS. INSTRUMENTS FOR THE MEASUREMENT OF SOUND INTENSITY. MEASUREMENT WITH PAIRS OF PRESSURE SENSING MICROPHONES.
€81.00
ELECTROACOUSTICS. RANDOM-INCIDENCE AND DIFFUSE-FIELD CALIBRATION OF SOUND LEVEL METERS.
SOUND SYSTEM EQUIPMENT. METHODS OF MEASURING AND SPECIFYING THE PERFORMANCE OF SOUNDERS (ELECTROACOUSTIC TRANSDUCERS FOR TONE PRODUCTION).
Measurement microphones -- Part 1: Specifications for laboratory standard microphones.
€61.00
