Subiya Fatima et al JMSCR Volume 03 Issue 09 September Page 7570 JMSCR Vol||3||Issue||9||Page 7570-7574||September 2015 Study and Analysis of Audiometer Signal Authors Subiya Fatima 1 , Dr. Channappa Bhyri 2 , Prof. Kalpana Vanjerkhede 3 1 PG Student PDA Engineering College Kalaburagi Email: 1 subiya29@yahoo.com 2 Asso. Professor Department of Instrumentation Technology, PDACEG Email: 2 channubhyri@yahoo.com 3 HOD IT PDA College of Engineering, Kalaburagi Email: 3 hodit@pdaengg.com Abstract The objective of the work is to determine the type of hearing loss of an individual and plot the frequency and intensity recording and construct the audiogram. In this work microprocessor controlled clinical diagnostic Audiometer has been used for measuring hearing loss. The audiogram is a chart of hearing sensitivity with frequency charted on the X- axis and intensity on the Y-axis. The audiogram is a graph which gives a detailed description of your hearing ability. Two different processes are used in pure tone audiometer, one is air conduction and the other is bone conduction to identify hearing loss. Subjects were tested by varying the frequency and intensity with the proposed system and test results were analyzed using statistical method. Keywords—Air conduction, Bone Conduction, Frequency, Hearing loss, Intensity. I. INTRODUCTION Anatomy of the Ear The ear is made up of three parts: the outer, middle, and inner ear. All three parts of the ear are important for detecting sound by working together to move sound from the outer part through the middle and into the inner part of the ear. Ears also help to maintain balance. The anatomy of ear is shown in figure 1. The Outer Ear The outer ear includes, auricle (cartilage covered by skin placed on opposite sides of the head), auditory canal (also called the ear canal), and eardrum outer layer (also called the tympanic membrane). The outer part of the ear collects sound. Sound travels through the auricle and the auditory canal, a short tube that ends at the eardrum. The middle Ear The middle ear includes, eardrum, cavity (also called the tympanic cavity), ossicles (3 tiny bones that are attached).the 3bones are malleus (or hammer) long handle attached to the eardrum, incus (or anvil) – the bridge bone between the malleus and the stapes, stapes (or stirrup) – the footplate; the smallest bone in the body. Sound entering the outer ear travels through the middle ear and causes the www.jmscr.igmpublication.org Impact Factor 3.79 ISSN (e)-2347-176x DOI: http://dx.doi.org/10.18535/jmscr/v3i9.44