AA222 Instructions for Use – US Page 78
DD45 (G
F
-G
C
) PTB-DTU report 2009-2010.
TDH39 (G
F
-G
C
) IEC60645-2 1997.
HDA280 (G
F
-G
C
) PTB report 2004.
HDA300 (G
F
-G
C
) PTB report 2013.
Norway Speech level IEC60645-2 1997+20dB (acoustical linear weighting)
Norway Speech Equivalent free field level (G
F
-G
C
) from IEC60645-2 1997 (acoustical equivalent sensitivity
weighting)
Norway Speech Not linear level 1 kHz RETSPL (DD45-TDH39-HDA300) and EAR3A – IP30 – CIR - B71-
B81 IEC60645-2 1997 +20dB (no weighting)