HEARING AIDS.PART 6: CHARACTERISTICS OF ELECTRICAL INPUT CIRCUITS FORHEARING AIDS.
€41.00
Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
€70.00
Audiometers - Part 2: Equipment for speech audiometry
€68.00
INSTRUMENTS FOR THE MEASUREMENT OF AURAL ACOUSTIC IMPEDANCE/ADMITTANCE.
€72.00
Audiometers - Part 4: Equipment for extended high-frequency audiometry
€59.00
Electroacoustics - Octave-band and fractional-octave-band filters
€76.00
Hearing aids - Part 2: Hearing aids with automatic gain control circuits
€65.00
Electroacoustics - Instruments for measurement of aircraft noise - Performance requirements for systems to measure one-third-octave band sound pressure levels in noise certification of transport-category aeroplanes
€64.00
SOUND LEVEL METERS.
€51.00
INTEGRATING-AVERAGING SOUND LEVEL METERS.
€36.00
AUDIOMETERS. PART 3: AUDITORY TEST SIGNALS OF SHORT DURATION FOR AUDIOMETRIC AND NEURO-OTOLOGICAL PURPOSES.
€56.00
HEARING AIDS. PART 7: MEASUREMENT OF PERFORMANCE CHARACTERISTICS OF HEARING AIDS FOR QUALITY INSPECTION FOR DELIVERY PURPOSES.
€30.00
Hearing aids - Part 0: Measurement of electroacoustical characteristics
Hearing aids - Part 1: Hearing aids with induction pick-up coil input
€74.00
