GSi 18 - Appendix B Reference Threshold Values

Reference Threshold Values
Frequency
125 250 500 750 1000 1500 2000 3000 4000 6000 8000
(Hz)
R/L
47.5 27 13 6.5 6.0 8.0 8.0 8.0 9.0 20.5 12.0
(dB)
Table 1: DD45 RETSPL Values for IEC 318-3 (NBS 9A) Coupler
Frequency 125 250 500 750 1000 1500 2000 3000 4000 6000 8000
(Hz)
R/L 26 14.0 5.5 2.0
0 2 3 3.5 5.5 2.0 0
(dB)
Table 2: ANSI S3.6 and ISO 389.2 Reference Thresholds
for ER3A Insert Earphones
HA-2 with Rigid Tube
1718-0100 Rev. E B-1
Appendix - B