eMoyo KUDUwave - Page 84

eMKW-TD0054-21- Page 83
Bone vibrator headband static force
5.4 N ±0.5 N
Air conduction calibration coupler
IEC 60318-4 (IEC 711)
Ear Simulator
RETSPL as per ISO 389-2, ISO 389-4*
Bone vibrator calibration coupler
IEC 60318-1 Ear Simulator with IEC 60318-6 Artificial Mastoid
RETSPL as per ISO 389-3
Tone presentation
Pure tone or warble tone
Warble tone waveform
Sinusoidal
Warble tone repetition rate
4 - 20 Hz, Default = 5 Hz
Warble tone frequency deviation
5 - 25 %, Default = 10 %
Masking
Narrow band noise automatically centered at the test frequency
*The default extended high frequency (9 kHz - 16 kHz) reference equivalent threshold sound pressure
levels (RETSPL) are different to those of ISO 389-5 for insert earphones.
Speech Testing Specifications
Transducer
KUDUwave ™ built-in insert earphone
Masking
Speech weighted random noise
Spectrum constant from 125 Hz to 1000 Hz, then -
12 dB/oct
from 1 kHz to 6 kHz (tolerance-3 dB to +5 dB)
Calibration
All pre-recorded words in word lists calibrated against 1 kHz
calibration signal
Additional Audiometry Specifications
Talk forward
~40 - 100 dBHL adjustable
Modes of operation
Manual
Automatic shortened ascending (Hughson and Westlake method
- ISO 8253-1)
Automatic standard ascending Shortened and standard
bracketing
Fixed frequency Békésy sweep (optional)
Pure tone Stenger (optional)
Air conduction system sound attenuation
characteristics using Ambi-dome™ technology
Combined ear-cup and ear-insert
attenuation
31.0 dB at 125 Hz
37.7 dB at 250 Hz
43.8 dB at 500 Hz
40.8 dB at 1000 Hz
38.1 dB at 2000 Hz
52.3 dB at 4000 Hz
45.8 dB at 8000 Hz
Operational background sound pressure levels to
test down to 0dBHL (ANSI S3.1, ISO 8253-
1, SANS
10182)
< 70 dB SPL at 125 Hz
< 69 dB SPL at 250 Hz
< 58 dB SPL at 500 Hz
< 53 dB SPL at 1000 Hz
< 50 dB SPL at 2000 Hz
< 59 dB SPL at 4000 Hz