eMoyo KUDUwave - Page 87

eMKW-TD0054-21- Page 86
Maximum Permissible Ambient Noise Levels for the KUDUwave™
According to BS EN ISO 8253-1:2010
Hz
Average
attenuation
provided
by industry
standards
headsets
Average
attenuation
provided by
KUDUwave
Difference
between the
average
attenuation
provided by
the two
earphones
MPANL in one-third-octave
bands, for air conduction
audiometry for hearing
threshold level measurements
down to 0 dB when typical
current supra-aural earphones
are used.
Difference in attenuation +
MPANL for typical supra-
aural earphones for hearing
threshold level
measurements down to 0 dB.
(MPANL when a KUDUwave
is used)
125 3 31.0 28.0 28
1
39
2
51
3
56.0
1
67.0
2
79.0
3
250 5 37.7 32.7 19
2
37
3
51.7
2
69.7
3
500 7 43.8 36.8 18 54.8
1000 15 40.8 25.8 23 48.8
2000 26 38.1 12.1 30 42.1
4000 32 52.3 20.3 36 56.3
8000 24 45.8 21.8 33 54.8
According to ANSI S3.1-1999
Hz
Average
attenuatio
n provided
by
industry
standards
headsets
Average
attenuatio
n provided
by
KUDUwav
e
Difference
between
the average
attenuation
provided
by the two
earphones
Maximum
permissible ambient
noise levels dB SPL
for a typical Supra-
aural headset
Testing to a
minimum threshold
of 0dB HL, Test
Frequency Range
125 - 8000Hz.
Maximum permissible
ambi
ent noise levels dB
SPL for the
KUDUwave insert
earphones with
forehead bone
conductor
Testing to a minimum
threshold of 0dB HL,
Test Frequency Range
125 - 8000Hz.
Maximum
permissible ambient
noise levels dB SPL,
KUDUwave insert
earphones.
Testing to a
minimum threshold
of 25dB HL, Test
Frequency Range
500 - 8000Hz.
125 3 31.0 28.0 35 63.0 -
250 5 37.7 32.7 25 57.7 -
500 7 43.8 36.8 21 57.8 82.8
1
Test Tone Range: 125Hz - 8000Hz
2
Test Tone Range: 250Hz - 8000Hz
3
Test Tone Range: 500Hz - 8000Hz