Acoustics Experts / Noise, Sound & Acoustics Environmental Analyses - Various ways to measure whatever sound levels, evaluate characteristics of sounds or sound sources at issue. / Y&J's Sound Level Meters / "digital" "analog" "digital signal" "analog signal" "process" "processing" "digital signal processing" "audible" "intelligible" "sound" "noise" "wiretap" "clarify" "measure" "SPL" "meter" "hearing" "level" "sound level" "enviroment" "environmental" "building" "aircraft" "engine" "traffic" "noise-induced hearing loss" "hearing loss" "noise-induced" "NIHL" "OSHA" "compliance" "OSHA-compliance" "industrial" "industrial noise" "ANSI" "sound level meter" "sound level" "American National Standards Institute"