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Idiomas disponibles
Idiomas disponibles
Test pressure
Stimulus
Attenuator step
Method of presentation
Frequency accuracy
Intensity accuracy
Total harmonic distortion (THD)
Compatible transducers
Type
Supra-aural headphones
Insert earphones
Available frequencies and maximum intensities
Freq.
[Hz]
125
250
500
750
1000
1500
2000
3000
4000
6000
8000
EQUIVALENT THRESHOLD LEVELS OF REFERENCE FOR PURE TONE
Ref. standard
Coupler
Freq. [Hz]
125
250
500
750
1000
1500
2000
3000
4000
6000
8000
42
Automatic
-
Tympanogram peak pressure
-
Peak pressure less gradient (width of pressure curve
at half peak height)
-
Atmospheric pressure
AUDIOMETRY –
Pure tone
5 dB
Continuous, Pulsed (cadence: 1Hz)
0.1%
±3 dB between 125Hz and 4kHz; ±5 dB over 4kHz
VA: less than 2.5%
Manufacturer
Radioear Corp.
Etymotic Research Inc.
DD45
[dB HL]
65
85
100
100
100
100
100
100
100
95
85
DD45
ISO 389-1
(ANSI S3.6)
IEC 60318-3
dB
[re 20 µPa]
47.0
27.0
13.0
6.5
6.0
8.0
8.0
8.0
9.0
20.5
12.0
SOUND ATTENUATION VALUES
audiometry license required
Model
DD45
ER-3C
ER-3C
ISO 389-2
(ANSI S3.6)
IEC 60318-5
dB
[re 20 µPa]
26.0
14.0
5.5
2.0
0.0
2.0
3.0
3.5
5.5
2.0
0.0
ER-3C
[dB HL]
80
90
100
100
100
100
100
100
100
90
75
IPSI
ISO 389-2
(ANSI S3.6)
IEC 60318-5
dB
[re 20 µPa]
-
-
11
-
5.5
-
7
-
2
-
-
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