Objective:  

 The present study was undertaken to assess and compare the results of multicomponent tympanometry for 226 Hz, 678 Hz, 800Hz and 1000 Hz probe tone in detecting middle ear pathology. 

Subjects

70 ears of 70subject who are otologicallynormal, pure tone audiometry within normal, no middle ear problem, no exposure to noise were included in the present study for the investigation of differences among different probe tone frequencies .one ear is chosen for the measurements.

Key words: transient otoacoustic emission, stapedial reflex, normal hearing