Specification for ultrasonic power measurement in liquids in the frequency range 0.5 MHz to 25 MHz
€281.00
Acoustics. Audiometric test methods Sound field audiometry with pure tone and narrow-band signals
€201.00
Hearing aids Magnetic field strength in audio-frequency induction loops for hearing aid purposes
€172.00
Hearing aids Characteristics of electrical input circuits for hearing
€85.00
Specification for a reference zero the calibration of pure-tone audiometers Data earphone coupler combinations maintained at certain standardizing laboratories
Specification for a reference zero the calibration of pure-tone audiometers Data certain earphones used in commercial practice
Specification for a reference zero the calibration of pure-tone audiometers Data wide-band artificial ear complying with BS 4669
Specification for a reference zero the calibration of pure-tone audiometers Normal threshold hearing pure tones by bone conduction
Pure-tone audiometers
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Sound level meters (industrial grade)
Marking of control settings on hearing aids
Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers
Specification for sound level meters
Hearing aids Methods for measurement of electroacoustical characteristics hearing aid equipment not entirely worn on the listener
Specification for personal sound exposure meters
