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Acoustinet - - - Ii, 1 l:l.',"i:~~i'~'2rctll..i~\::d30';f.!:;bcs. nD Ls!~, ~j j b~".;rb Qll and '.:iILl~::lkJ~ ~1'~StJd'J :1J!:l:3 ADDENDUM... GLOSSARY For analysis of data collected, the following glossary of terms apply: Meas. Meaninl! Scientific definition Relevance (Explanation) OvL OverLoad The percentage of measurement time I no: indicates if the measure has been when the sound meter was overloaded. I corrupted by erroneous (over- I loaded) values. I MaxP Maximum The maximum C-weighted Peak sound yes: indicates the maximum instanta- Peak sound level perceived during the measurement neous peak pressure of the loud- pressure period. est single event, considering its rC-weightedllow-fq. content. MaxI. Maximum The maximum A-weighted sound level yes: indicates the maximum A- sound Level perceived during the measurement period. weighted instantaneous value of any single sound event. MinI. I Minimum The minimum A-weighted sound level I no: indicates the minimum A- I sound lLevel perceived during the measurement period. weighted instantaneous value of anv single sound event. lLeq Equivalent The steady sound that, over a stated time yes: Shows the time averaged level of sound Level period (8hrs.) and geographical location, the noisy item. Directly relates to would have the same energy content as HUDI OSHA recommendations the time varying sound (noise). and is the sound quantifier peo- ple use when speaking about noise. SEL Sound Expo- The constant sound level that, if main- no: used mostly in Court cases, for sure Level tained over 1 second, would have the OSHA-relevant matters (noise same energy content as the measured Leq exposure In the work envi- extended over the measurement time. ronment). LEPd Daily Personal The constant sound level that, if main- no: used mostly in Court cases for noise Exposure tained over 8 hours, would have the same OSHA-relevant matters (noise Level sound energy content as the measured Leq fatigue in the work environment) extended over the exposure time. LIO lO-percentile The time-averaged sound level that is ex- yes: indicates the foreground [pre- sound Level ceeded for 10% of the measurement pe- dominant] nOise level present riod. 10% of the time). LSO 50-percentile The time-averaged sound level that is ex- yes: approximates Leq, and com- sound Level ceeded for 50% of the measurement pe- mands a statistical average noise riod. value for comparison pumoses. L90 90-percentile The time-averaged sound level that is ex- yes: indicates the background noise sound Level ceeded for 90% of the measurement pe- level (that is present 90% of the riod. time). :J::']..=:; :3 -:J 3 ;"\',:O;,;3~jn-~( .,~~' ~5::=: h",\, ~ ~~.~ ';:::32'. :V.3'-1~i :;:"';It? ) t 2 1\.,1:3:-''':, .;-=(_ 33! =-~ ..,' 3-\ ;o,;! J3l 251),) =Cl( ();J;))7J 3133'::,,'- (>)5, 92).2.),:.\:: --3i~ acous!icenqineers@holmail.com