Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes (IEC 60118-4:1981 + A1); German version EN 60118-4:1998 + A1:1998.
€56.17
Hearing aids - Part 6: Characteristics of electrical input circuits for hearing aids
€22.00
Vocabulaire électrotechnique - Chapitre 801 : acoustique et électroacoustique
€221.50
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
Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index (IEC 60268-16:1998); German version EN 60268-16:1998.
€98.32
Ultrasonic power measurement in liquids in the frequency range 0,5 MHz to 25 MHz (IEC 61161:1992 + A1:1998); German version EN 61161:1994 + A1:1998.
€84.58
Electroacoustics - Equipment for the measurement of real-ear characteristics of hearing aids (IEC 29/410/CD:1998)
Electroacoustics. Simulators of human head and ear. Part 2 : an interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range. - Électroacoustique
€77.67
Électroacoustique - Simulateurs de tête et d'oreille humaines - Partie 3 : coupleur acoustique pour l'étalonnage des écouteurs supra-auraux utilisés en audiométrie.
Hearing aids - Part 1: Hearing aids with induction pick-up coil input
€55.00
Électroacoustique - Simulateurs de tête et d'oreille humaines - Partie 1 : simulateur d'oreille pour l'étalonnage des écouteurs supra-auraux
Hearing aids Magnetic field strength in audio-frequency induction loops for hearing aid purposes
€165.00
Amendment to IEC 60942:1997: Sound calibrators - Electromagnetic and electrostatic compatibility requirements and test procedures (IEC 29/417/CDV:1998)
Ultrasonics - Surgical systems - Measurement and declaration of the basic output characteristics (IEC 61847:1998); German version EN 61847:1998.
€105.42
