In the fight against harmful noise levels, the SoundPro SE/DL Series can analyze and detect what sound levels are dangerous to the human ear. The series includes advanced handheld sound level meters and real-time frequency analyzers. All meters include two virtual sound level meters to simultaneously measure multiple regulatory requirements. Meters equipped with 1/1 and/or 1/3 octave real-time frequency analysis allow the user to choose either real-time analyzer or broadband measurements for one of the virtual sound level meters.