Dr. Xiang Ning of Rensselaer Polytechnic Institute visited our institute on Jan.18, 2007 at the invitation of the Communication Acoustics Laboratory. At the seminar, he gave a lecture on communication acoustics in Room 218 of Dezhao Building. Director Li Xiaodong of Communication Acoustics Laboratory, Director Liu Ke of Noise and Vibration Laboratory, as well as the postgraduate students interested in this area attended the lecture.

Dr. Xiang Ning is a well-known expert on communication acoustics specializing in architectural acoustics, binaural technology, ultrasonic NDE/NDT, M-sequence measurement technology, acoustic landmine detection, Bayesian signal processing and automatic target recognition. Now he is making his great effort as a professor in the Graduate Program of Architectural Acoustics at School of Architecture, Rensselaer Polytechnic Institute. He is the Fellow of the Institute of Acoustics (IoA), United Kingdom and Acoustical Society of America. Besides his practical researches, he attaches importance to the theoretical studies and published many articles and works on the research area he engaged in. His recent publications are: On diffusion equation models for room-acoustic prediction (2007), An algorithm for acoustical multiple input and multiple output systems identification (2007), A pseudo-inverse algorithm for simultaneous measurements using multiple acoustical sources (2007) and so on.

Dr. Xiang Ning gave us the lecture titled "Communication Acoustics". In the lecture, He generally introduced the history and development of communication acoustics, and famous experts in this area. Moreover, he mentioned his own experiences in Inter-noise conference and funny stories in his daily research work. Following, Dr. Xiang Ning extended his lecture by a warm discussion with the audience and clearly answered the questions the audience concerned.