D-0100778 Rev C
95
Earphones - ANSI Speech RETSPL
Transducer
DD45
DD45
TDH50
TDH50
HDA200
HDA300
Impedance
10 Ω
10 Ω
60 Ω
60 Ω
23 Ω
23 Ω
Coupler
318-3
318-1
318-3
318-1
318-1
318-1
RETSPL
RETSPL
RETSPL
RETSPL
RETSPL
RETSPL
Speech
18.5
20
20
20
19
14.5
Speech
Equ.FF.
18.5
19.5
17
18
18.5
16
Speech Non-
linear
6
7.5
7.5
7.5
5.5
2
Speech noise
18.5
20
20
20
19
14.5
Speech noise
Equ.FF.
18.5
19.5
17
18
18.5
16
Speech noise
Non-linear
6
7.5
7.5
7.5
5.5
2
White noise in
speech
21
22.5
22.5
22.5
21.5
17
DD45 (G
F
-G
C
) PTB-DTU report 2009-2010.
TDH50 (G
F
-G
C
) ANSI S3.6 2010.
HDA200 (G
F
-G
C
) ANSI S3.6 2010 and ISO 389-8 2004.
HDA300 (G
F
-G
C
) PTB report 2013.
ANSI Speech level 12.5 dB + 1 kHz RETSPL ANSI S3.6 2010 (acoustical linear weighting)
ANSI Speech Equivalent free field level 12.5 dB + 1 kHz RETSPL – (G
F
-G
C
) from ANSI S3.6
2010(acoustical equivalent sensitivity weighting)
ANSI Speech Not linear level 1 kHz RETSPL ANSI S3.6 2010 (DD45-TDH50-HDA200-HDA300)
and EAR 3A –IP30- B71-B81 12.5 dB + 1 kHz RETSPL ANSI S3.6 2010 (no weighting)
