Middle-ear deafness, also known as conductive hearing loss, is a condition where sound waves are hindered from reaching the inner ear due to a blockage in the middle ear. Alternative terms for this condition include conduction deafness or conductive hearing impairment. Other synonyms include mechanical hearing loss, which refers to the mechanical blockage of sound that occurs in the middle ear. Some may also use the term tympanic hearing loss, which comes from the tympanic membrane, or eardrum, which can be involved in the blockage. Regardless of the term, individuals with middle-ear deafness may experience difficulty hearing sounds at a normal volume or may have trouble differentiating between sounds.