Acoustics. Reference zero for the calibration of audiometric equipment equivalent threshold force levels pure tones and bone vibrators
€201.00
Acoustics. Reference zero for the calibration of audiometric equipment equivalent threshold sound pressure levels pure tones and supra-aural earphones
Acoustics. Statistical distribution of hearing thresholds as a function of age
Acoustics. Reference zero for the calibration of audiometric equipment equivalent threshold sound pressure levels pure tones in frequency range 8 kHz to 16
€172.00
Forestry machinery. Noise test code for portable hand-held machines with internal combustion engine. Engineering method (grade 2 accuracy)
€281.00
€329.00
Acoustics. Hearing protectors Estimation of effective A-weighted sound pressure levels when hearing are worn
Forestry machinery. Noise test code for portable hand-held machines with internal combustion engine. Engineering method (Grade 2 accuracy)
The normal threshold of hearing for pure tones by earphone listening
Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers
Electroacoustics. Audiometric equipment Equipment for pure-tone audiometry
Audiometers Auditory test signals of short duration for audiometric and neuro-otological purposes
Audiometers Pure-tone audiometers
Audiometers Equipment for extended high-frequency audiometry
Ergonomic assessment of speech communication Speech interference level and distances for persons with normal hearing capacity in direct (SIL method)
