I won't cover every last line of code, every intermediate step, or every detail of hardware; that would take a book and would be obsolete by the time you read it.

Bottom line: we need the intermediate layer between the browser and the RIA; the browser technologies will never get it right.

Based on the theory of acoustics, this paper analyzes the character of geometrical spreading loss of finite line sound source on three types of directivity-monopole, intermediate pole and dipole.