... signal of 94dB at 1kHz (sinusoidal) * Offers 4 measurement parameters Lp (sound level), Leq (equivalent continuous A sound), Lmax (maximum sound ... Serial to USB Adapter * Function: Lp, Leq, Lmax, LN. * Parameters measured: Lp, Leq, Lmax, LN. * Measurement range: * Lp: 30~130dB (A), 35~130dB ...