(West Lafayette Indiana )National Conference on Noise Control Engineering (wash )International Conference on Noise Control Engineering (Amsterdam )International Conference on Noise Control Enginneering (Wash )International Conference on Noise Control Engineering (Hawaii )International Conference on Noise Control Enginneering (Cambride,USA)National Conference on Noise Control Engineering (Miami Florida)International Conference on Noise Control Engineering (Miami Florida)International Conference on Noise Control engineerong (Zurich)International Conference on Noise Control Engineering International Conference on Noise Control Engineering