Interacoustics Titan - Page 102

Titan Instructions for Use - EN Page 98
Reflex Calibration Standards and Spectral Properties:
General
Specifications for stimulus and audiometer signals are made to follow IEC 60645-5
Contralateral
Earphone
Pure tone:
ISO 389-1 for TDH39 and ISO 389-2 for CIR 55.
Wide Band noise (WB):
− Spectral properties:
Interacoustics Standard
As “Broad band noise” specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Low Pass noise (LP):
− Spectral properties:
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, ±5 dB re. 1000 Hz
level
High Pass noise (HP):
− Spectral properties:
Interacoustics Standard
Uniform from 1600 Hz to 10KHz, ±5 dB re. 1000 Hz
level
Ipsilateral Earphone
Pure tone:
Interacoustics Standard.
Wide Band noise (WB):
− Spectral properties:
Interacoustics Standard
As “Broad band noise” specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Low Pass noise (LP):
− Spectral properties:
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, ±10 dB re. 1000 Hz
level
High Pass noise (HP):
− Spectral properties:
Interacoustics Standard
Uniform from 1600 Hz to 4000 Hz, ±10 dB re. 1000
Hz level
General about levels:
The actual sound pressure level at the eardrum will
depend on the volume of the ear. See Table 2 for
details.
The risk of artifacts at higher stimulus levels in reflex measurements are minor and will not activate the
reflex detection system