Integrating Sound DataloggerSper Scientifics Integrating Sound Datalogger measures and records sound pressure level (SPL) over time to calculate cumulative sound exposure (LEQ). Sper Scientifics Integrating Sound Datalogger measures sound pressure level (SPL) according to A or C weighting and integrates the weighted SPL over an established length of time (such as an 8 hour workday) to calculate cumulative sound exposure (LEQ). Test parameters are simultaneously displayed on a