... -automatic appliance Summary : HS5618A Integrating Sound Level Meter is an intelligent and portable meter which is integrated with A & C frequency ... weighting and can automatically meter equivalent sequent Leq, sound ... 5kHz4. Frequency Weighting: A, C5.Time Weighting: F(Fast), S(Slow)6.Auto- Measuring: Leq,LAE,DL,Lmax,Ldn,Ld ...