The article summerizes the development of magnetoellurics in data processing,model research and inversion problem presently in western countries and points out that the data noise analysis,inversion and interpretation, especially the multi-dimensional inversion are of the greatest interests.

This paper discussed the aspects of the box wave method such as the parameter design and acquisition operation of the method, noise analysis and array analysis on the acquired data, as well as estimation of signaltonoise ratio for seismic records data and data interp.

Clinical signification of voice analysis in evaluation of laryngostenosis;

Objective:To evaluate the curative efficiency on vocal function of 56 laryngeal palsy patients underwent arytenoid adduction operationMethod:Voice analysis and laryngeal aerodynamical measurement were performed for the 56 laryngeal palsy patients to compare maximum phonation time(MPT),mean flow rate (MFR),voice intensity(SPL), and expiratory pressure(EP)before and after operation.

Based on the characters of speech analysis and by using mainstream virtual instrument a general speech analysis platform is developed.

A Waveform Transformation Coding(WTC)speech analysis-synthesissystem adapted to a microcomputer is developed.