Appendices to NCHRP Research Report 842 (2017) / Chapter Skim
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Pages 71-105
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From page 72... ...
MAXIM The prof the main for the l between average c Figure E using the Although the louds is essenti the sourc different through 2 Northern regions: similar h the regio equal to may tend Hz, the s higher th UM PROF iles using th report as th oudspeaker the profile orrection fa 1: Correcte average of the adjustm peaker, the ally a point es are not n sources at 6 of the m California one toward eight and ar ns are some each other a to underest ource regio an the front ILE LEVEL e 3.3ft (1m e optimal co profiles me corrections ctors supply d vertical pr the 0 and 3. ent factors application t source limit ecessarily th the same h ain report f demonstrate the front at e relatively what circul nd as a res imate the co ns begin to .
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From page 73... ...
in the ho source fa shows th discussed -2.7 dBA Figure E based on For truck source tru at the up (Figure E Above 8 Above 1 that the d profiles overall p these ba agreemen frequenc considere rizontal dir ctors may e profiles in the main . 2: Corrected the point so s with high cks.
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From page 74... ...
Fig Figure E point sou ure E3: Un 4: Correcte rce with a corrected ve d vertical pr 2.7 dB adjus rtical profi ofiles meas tment E4 les measured ured for Run for Run 19 19 at the u at the uphi phill NC5 s ll NC5 site ite, based on the
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From page 75... ...
Probably summatio micropho levels me of the lan adjusted the corre while th differenc levels ar differenc maximum Figure E compared more imp n is match ne location asured by th e of vehicl maximum l cted profile e unadjuste es between e shown in es shown in comes clo 5: Unadjus to measure ortant than ing the freq . This is don e Larson D e travel.
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From page 76... ...
Figure E maximum Similar d The aver in Figure at each f show co constant For the a dB. This results in 6: Differen profile leve ifferences w age differen E7.
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From page 77... ...
Figure E unadjuste sites Once the cases, all summatio which is dBA. For the next of these Carolina trucks.
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From page 78... ...
Figure E with the s for 21 tru Applying summing directly matched. about 1ft profile, t than thos under the pressure the energ example mean tha with a ran 8: Offsets r ummation p ck pass-by the frequen them to p measured, u This can be (0.3m)
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From page 79... ...
Figure E levels an profiles f ADDITI LEVEL The follo the maxim 9: Differenc d the levels or 21 truck p ONAL HE METHOD wing examp um profile e between th of the summ ass-by even AVY TRU les show th level metho e energy su ation profil ts CK EXAM e uncorrecte d, which wa E9 mmation of e produced f PLES U d and corre s described the measure rom the adj SING THE cted one-thi in the main d overall A usted one-t MAXIM rd octave ba report. -weighted p hird octave UM PROF nd profiles u rofile band ILE sing
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From page 80... ...
Figure E source w Figure E1 11: Correct ith a -3 dB a 0: Uncorrec ed vertical p djustment ted vertical rofiles mea E10 profiles mea sured for R sured for R un 115 at 5 un 115 at 50 05 SB2, ba 5 SB2 sed on the point
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From page 81... ...
Figure E source w Figure E12 13: Correct ith a -3.4 dB : Uncorrec ed vertical p adjustment ted vertical rofiles mea E11 profiles mea sured for R sured for R un 119 at 5 un 119 at 50 05 SB2, ba 5 SB2 sed on the point
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From page 82... ...
Figure E source w Figure E1 15: Correct ith a -3.7 dB 4: Uncorrec ed vertical p adjustment ted vertical rofiles mea E12 profiles mea sured for R sured for R un 128 at 5 un 128 at 50 05 SB2, ba 5 SB2 sed on the point
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From page 83... ...
Figure E source w Figure E1 17: Correct ith a -2.7 dB 6: Uncorrec ed vertical p adjustment ted vertical rofiles mea E13 profiles mea sured for R sured for R un 131 at 5 un 131 at 50 05 SB2, ba 5 SB2 sed on the point
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From page 84... ...
Figure E source w Figure E1 19: Correct ith a -2.8 dB 8: Uncorrec ed vertical p adjustment ted vertical rofiles mea E14 profiles mea sured for R sured for R un 133 at 5 un 133 at 50 05 SB2, ba 5 SB2 sed on the point
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From page 85... ...
Figure E source w Figure E2 21: Correct ith a -3.3 dB 0: Uncorrec ed vertical adjustment ted vertical profiles me E15 profiles me asured for R asured for R un 62 at 5 un 62 at 50 05 NB1, ba 5 NB1 sed on the point
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From page 86... ...
Figure E source w Figure E2 23: Correct ith a -3.5 dB 2: Uncorrec ed vertical adjustment ted vertical profiles me E16 profiles me asured for R asured for R un 65 at 5 un 65 at 50 05 NB1, ba 5 NB1 sed on the point
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From page 87... ...
Figure E source w Figure E2 25: Correct ith a -2.95 d 4: Uncorrec ed vertical B adjustmen ted vertical profiles me t E17 profiles me asured for R asured for R un 79 at 5 un 79 at 50 05 NB1, ba 5 NB1 sed on the point
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From page 88... ...
Figure E with a -2 Figure E 27: Correct .6 dB adjust 26: Uncorr ed vertical p ment ected vertic rofiles mea E18 al profiles m sured for Ru easured for n 21 at NC Run 21 at N 1, based on C1 the point source
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From page 89... ...
Figure E with a -2 Figure E 29: Correct .6 dB adjust 28: Uncorr ed vertical p ment ected vertic rofiles mea E19 al profiles m sured for Ru easured for n 65 at NC Run 65 at N 2, based on C2 the point source
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From page 90... ...
Figure E with a -2 Figure E 31: Correct .7 dB adjust 30: Uncorr ed vertical p ment ected vertic rofiles mea E20 al profiles m sured for Ru easured for n 27 at NC Run 27 at N 3, based on C3 the point source
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From page 91... ...
Figure E with a -2 Figure E 33: Correct .7 dB adjust 32: Uncorr ed vertical p ment ected vertic rofiles mea E21 al profiles m sured for Ru easured for n 46 at NC Run 46 at N 4, based on C4 the point source
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From page 92... ...
Figure E with a -2 Figure E 35: Correct .5 dB adjust 34: Uncorr ed vertical p ment ected vertic rofiles mea E22 al profiles m sured for Ru easured for n 74 at NC Run 74 at N 5, based on C5 the point source
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From page 93... ...
Figure E with a -3 Figure E 37: Correct .5 dB adjust 36: Uncorr ed vertical p ment ected vertic rofiles mea E23 al profiles m sured for Ru easured for n 16 at NC Run 16 at N 7, based on C7 the point so urce
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From page 94... ...
Figure E with a -3 Figure E 39: Correct dB adjustm 38: Uncorr ed vertical p ent ected vertic rofiles mea E24 al profiles m sured for Ru easured for n 34 at NC Run 34 at N 7, based on C7 the point source
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From page 95... ...
Figure E with a -2 Figure E 41: Correct .45 dB adjus 40: Uncorr ed vertical p tment ected vertic rofiles mea E25 al profiles m sured for Ru easured for n 38 at NC Run 38 at N 7, based on C7 the point source
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From page 96... ...
Figure E with a -4 Figure E 43: Correct .2 dB adjust 42: Uncorr ed vertical p ment ected vertic rofiles mea E26 al profiles m sured for Ru easured for n 50 at NC Run 50 at N 8, based on C8 the point source
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From page 97... ...
Figure E with a -3 Figure E 45: Correct .1 dB adjust 44: Uncorr ed vertical p ment ected vertic rofiles mea E27 al profiles m sured for Ru easured for n 56 at NC Run 56 at N 8, based on C8 the point source
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From page 98... ...
Figure E with a -4 Figure E 47: Correct .3 dB adjust 46: Uncorr ed vertical p ment ected vertica rofiles meas E28 l profiles m ured for Ru easured for n 24 at NC1 Run 24 at N 6, based on C16 the point source
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From page 99... ...
Figure E with a -2 Figure E 49: Correct .8 dB adjust 48: Uncorr ed vertical p ment ected vertica rofiles meas E29 l profiles m ured for Ru easured for n 38 at NC1 Run 38 at N 6, based on C16 the point source
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From page 100... ...
Figure E with a -4 Figure E 51: Correct .23 dB adjus 50: Uncorr ed vertical p tment ected vertica rofiles meas E30 l profiles m ured for Ru easured for n 61 at NC1 Run 61 at N 6, based on C16 the point source
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From page 101... ...
ENERG In additi positione profiles f the profi Compare spot leve The diffe Similar t between well as th The resu lower fre reduction profile le overall o maximum measured Figure E pavemen the profil Y SUMMA on to comp d 3.3ft (1m or the louds le, as show d to Figure l is even a g rences show o the maxim the spot lev e difference lting profile quency ban at the low vel method r the summ profile lev overall pro 52: One-th t, determine e TION ADJ aring the sp ) above the peaker)
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From page 102... ...
Figure E pavemen summatio The ener for the gr shown in loudspea steeper th correctio report for lower fre influence using the Using th locations measured 53: Corre t, using the a n method gy summati ound level Figure E5 ker and the an those fo n factors at the maxim quency ban of the low energy sum e average c , the result overall pro cted vertica verage of th on method loudspeaker 4, as well average of und using th the higher f um profile l ds are highe er frequency mation meth orrection f ant summat file. l profiles e 3.3ft (1m)
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From page 103... ...
Figure E loudspea The corre 38 at Lak differenc 4.1 dBA profiles w the lowe Figure 59 approxim levels at the curva 54: One-th ker data, wi ction factor eville. Simi e between th .
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From page 104... ...
Figure E site, base Figure E summatio vehicles above in uncorrect energy, t profile m versus he from the frequency adjustme and the a 55: Correct d on the poi 56 shows th ns to the ov at 19 additi Figure E7 ed is indica he 315 and aximums o ight are mo profile ma bands. Be nts on match djusted sum ed vertical p nt source w e average erall level m onal test sit , the impro ted by the 400 Hz band f Figure E7 re gradual ximum con cause of thi ing the pro mation of th rofiles mea ith a -4.1 dB difference b easured at es.
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From page 105... ...
Figure E unadjuste measurem 56: Averag d and adj ent sites e sound le usted profi vel differen le energy s E35 ce between ummations the meas for severa ured pass-b l heavy tru y data and ck runs o the n all
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