Which measurement is performed on the Acoustilyzer AL 1 that filers out low frequency sound to approximate the response of the human ear?

Which measurement is performed on the Acoustilyzer AL 1 that filers out low frequency sound to approximate the response of the human ear?

A.
A-weighted SPL

B.
C- weighted SPL

C.
RTA SPL

D.
RT-60 SPL