Normal bone conduction with poor air conduction localizes damage outside the inner ear

Evidence

The lower part of Figure 7.36 shows example audiograms for two hearing-loss conditions. The audiogram in the lower-left position shows a conductive hearing loss in the left ear because the bone-conduction plot is normal, but the air-conduction plot shows a significant hearing loss that would be termed a “moderate hearing loss” (see Table 7.1). This indicates a problem between the outside world and the inner ear, and a hearing aid, tailored to the audiogram, could be used to correct for the air-conduction loss. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2362

Categorization

• DEFINE: Explains what a conductive hearing loss is and how the two plots jointly name the lesion site.