• 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)
Insert Earphones - IEC Speech RETSPL
• IEC Speech level IEC60645-2 1993 (acoustical linear weighting)
• IEC Speech Equivalent free field level (G
F
-G
C
) from IEC60645-2 1993 (acoustical equivalent
sensitivity weighting)
• IEC Speech Not linear level 1 kHz RETSPL (DD45-TDH50-HDA200-HDA300) and EAR 3A – IP30
- B71- B81 IEC60645-2 1993 (no weighting)