Parameter Estimation for Traffic Noise Models Using a Harmony Search Algorithm

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="left">Vehicle types</td><td align="center">Steady traffic flow (40 km/h to 140 km/h)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Large vehicle</td><td align="center"><span style="width: 118.35px;"><svg height="18.85" id="M14" style="vertical-align:-4.10045pt" version="1.1" viewbox="0 0 118.35 18.85" width="118.35" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td></tr><tr><td align="left">Medium vehicle</td><td align="center"><span style="width: 110.75px;"><svg height="17.3375" id="M15" style="vertical-align:-4.10045pt" version="1.1" viewbox="0 0 110.75 17.3375" width="110.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td></tr><tr><td align="left">Light truck</td><td align="center"><span style="width: 110.75px;"><svg height="17.3375" id="M16" style="vertical-align:-4.10045pt" version="1.1" viewbox="0 0 110.75 17.3375" width="110.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td></tr><tr><td align="left">Car</td><td align="center"><span style="width: 110.75px;"><svg height="17.3375" id="M17" style="vertical-align:-4.10045pt" version="1.1" viewbox="0 0 110.75 17.3375" width="110.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><svg height="13.95" id="M18" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 20.35 13.95" width="20.35" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.012,-0,0,-.012,.062,5.525)"><path d="M471 153q-22 -15 -61 -13q-25 31 -45.5 49.5t-56.5 41.5q4 -71 28 -134q-17 -33 -42 -46q-24 12 -42 46q24 63 28 134q-36 -23 -56.5 -41.5t-45.5 -49.5q-36 -2 -61 13q0 28 19 59q65 10 130 43q-65 33 -130 43q-19 31 -19 59q22 15 61 13q25 -31 45.5 -49.5t56.5 -41.5
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<g transform="matrix(.017,-0,0,-.017,7.675,13.688)"><path d="M730 650l-8 -28q-52 -4 -72 -18t-64 -77q-79 -113 -321 -539h-33l-119 541q-13 59 -29.5 73t-66.5 20l7 28h245l-8 -28l-28 -5q-33 -6 -40.5 -15.5t-0.5 -38.5l102 -450h2q191 320 246 430q21 42 15.5 56t-43.5 19l-31 4l7 28h240z" id="x1D449"></path></g>
</svg> is a velocity.<br/></td></tr></table>

A-weighted sound power levels (<svg height="15.3875" id="M13" style="vertical-align:-3.38113pt" version="1.1" viewbox="0 0 28.762501 15.3875" width="28.762501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>) in dB for a dense-graded asphalt (DGA) surface.

Journal of Applied Mathematics

tab2

Table 2

Table 2: Parameter Estimation for Traffic Noise Models Using a Harmony Search Algorithm 