AS/NZS 1270:2020
D1: Means • D2: Standard Deviation • D3: Means - Standard Deviation
Foam Eartips
Frequency, Hz
D1:
D2:
D3:
Silicone Eartips
Frequency, Hz
D1:
D2:
D3:
Relationship between sound output level and input signal.
SOK [db(A)]
Input Signal Level (dBFS) -51.4 -44.0 -41.4 -36.4 -31.4 -26.4 -21.3 -15.1
Bluetooth® (HFP)
Criterion Input Signal
Sound Output Level at Maximum Input Signal
Usage Time for Maximum Input Signal
Bluetooth® (HFP)
Maximum Sound Level
125 250 500 1000 2000 4000 8000
21.1 21.2 20.4 22.3 29.0 30.8 28.8
8.7
9.0
8.2
12.4 12.2 12.2 15.4 22.3 22.7 20.1
125 250 500 1000 2000 4000 8000
15.8 17.1 19.4 19.5 25.8 24.4 23.4
9.5
9.1
9.8
6.3
8.0
9.6 13.7 18.9 15.3 14.2
70
80.2 dB(A) at -10 dBFS
6.9
6.7
8.1
5.8
6.9
9.1
75
80
85
8.7
9.2
90
95
100
-39.4 dBFS
107.2 dB(A) at -14 dBFS
0.02H at -14 dBFS
105