HAMPPEP B13 - Acoustic parameters
HAMPPEP
DL
α
absorbence capacity
DL
R
sound transmission loss by air
B13/O
-
B3-28 dB
B13/JP
A3-8 dB, A4-from15 to 20 dB (2 variants)
B3-from 29 to 30 dB
B13/OP
A3-8dB, A4-from 15 to 20 dB (2 variants)
B3-from 29 to 30 dB