摘要
NOISE CONTROL:TWENTY YEARS OF PROGRESS AND FUTURETRENDS was the theme of NOISE-CON 91,the 1991 National Conference onNoise Control Engineering.NOISE-CON 91,sponsored by the Institute of NoiseControl Engineering in cooperation with the Stevens Institute of Technology,washeld in Tarrytown,New York on 1991 July 14-16.NOISE-CON 91 was theoccasion for the celebration of the 20th anniversary of the founding of the Instituteof Noise Control Engineering.The Proceedings of NOISE-CON 91 are now avail-
