Vocabulaire électrotechnique - Groupe 85 : électroacoustique - Acoustique physiologique et psychoacoustique
€70.50
Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers
€269.00
Specification for a reference zero the calibration of pure-tone audiometers Normal threshold hearing pure tones by bone conduction
€165.00
Specification for a reference zero the calibration of pure-tone audiometers Data wide-band artificial ear complying with BS 4669
Normal equal-loudness contours for pure tones and normal threshold of hearing under free-field listening conditions
Electric hearing aids; connecting cords for earphones
€24.39
The normal threshold of hearing for pure tones by earphone listening
