The performance of octave band-pass filters
€269.00
The normal threshold of hearing for pure tones by earphone listening
€165.00
Acoustic - Preferred frequencies; identical with ISO/DIS 266:1994
€34.30
Measurement microphones - Part 1: Specifications for laboratory standard microphones (IEC 61094-1:1992 + Corrigendum 1993); German version EN 61094-1:1994
€56.17
Measurement of the lowest resonance frequency of loudspeaker cones (IEC 84(Sec)379:1994)
€41.78
The absolute calibration of hydrophones using the planar scanning technique in the frequency range 0,5 MHz to 15 MHz (IEC 61101:1991); German version EN 61101:1993.
€77.20
Measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0,5 MHz to 15 MHz (IEC 61102:1991 + A1:1993); German version EN 61102:1993 + A1:1994.
€105.42
Filters for the measurement of audible sound in the presence of ultrasound; identical with IEC 61012:1990
Hearing instruments - Digital interface (IEC 29/293/CD:1995)
€48.79
Electroacoustics - Specifications for personal sound exposure meters (IEC 61252:1993); German version EN 61252:1995
Requirements for the declaration of the acoustic output of medical diagnostic ultrasonic equipment (IEC 61157:1992); German version EN 61157:1994.
€84.58
Ultrasonic power measurement in liquids in the frequency range 0,5 MHz to 25 MHz (IEC 61161:1992); German version EN 61161:1994
€63.27
Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes (IEC 29/301/CD:1995)
Hearing aids - Part 6: Characteristics of electrical input circuits for hearing aids (IEC 29/302/CD:1995)
Hearing aids - Part 1: Hearing aids with induction pick-up coil input (IEC 60118-1:1995); German version EN 60118-1:1995
