The operating characteristics of double-in and double-out steel ball mill are analyzed, and research on control of optimal ball mill load is conducted, electric ear is adopted to detect sound signal, wavelet transform is presented and utilized to process mill sound, which can reflect the state of mill load effectively and correctly.

The Analysis of Electrocochleogram in Patients with Sudden Deafness;

Effects of hyperthermia on electrocochleogram-brainstem auditory evoked potentials synthetic wave in guinea pigs;

Aim: To study the effects of hyperthermia on electrocochleogram (ECochG) and its wave origin.

Cochlear implant(CI) is a neural prosthetic device used to provide the sensation of sound to those who are profoundly deaf by delivering electrical stimulus to auditory nerve directly.

Alternating clicks-evoked ECochG in auditory neuropathy/auditory desynchronization;

Method:Fifteen patients with delayed endolymphatic hydrops were tested with pure tone threshold, ECochG,bithermal caloric test and vestibular evoked myogenic potentials test to detect the lesioned side and the extent of hydrops.

Methods Cases of MD in children seen at the Dizziness Center between January 2004 and July 2007 were reviewed for their clinical manifestations,electrocochleography(ECochG),vestibular evoked myogenic potential(VEMP),caloric test and pure tone audiometric results.

The harmonic complex tones and the study of the cochlear potentials;