Raymond Carhart

Raymond Theodore Carhart ( born March 28, 1912 in Mexico City; † October 2, 1975 ) was an audiologist at Northwestern University, Evanston (Illinois ).

Carhart was known by his namesake Carhart Valley (English Carhart notch) of tonaudiometrischen bone conduction in otosclerosis. It is noteworthy that this sink disappears through successful stapes plastic. Carhart described this finding in 1950 at the first international Audiology Congress in Stockholm. His name also carries the Threshold Tone Decay test, which was described by him in 1957.