As an established international journal, the Journal of Sound and Vibration is devoted to the prompt publication of original papers on experimental and theoretical work concerning all aspects of sound and vibration. Articles of current interest that transcend the usual specialization boundaries are particularly encouraged as well as introduction to, or reviews of, new fields of research. The journal includes announcements of meetings, book reviews, and comments of either a specific or general nature on previously published work. Now with 50 issues per year, the journal provides an invaluable tool for gaining up-to-date information on the rapidly developing field of sound and vibration.