Raymond Carhart

Raymond Theodore Carhart (March 28, 1912 - October 2, 1975) was a Speech-Language Pathologist (SLP). As a founder and pioneer of the science, he is frequently referred to as the "Father of Audiology."

Early life and education
Carhart was born on March 28, 1912, in Mexico City to Raymond Albert and Edith (Noble) Carhart. Raymond Albert was a Methodist missionary whose own father, Albert Elijah Carhart, was a temperance preacher.

Carhart studied at Dakota Wesleyan University (BA in Speech and Psychology, 1932) and at Northwestern University (MA, 1934, and PhD, 1936, in Speech Pathology, Experimental Phonetics and Psychology).

Research and career
Carhart remained at Northwestern until 1944, first as instructor in Speech Re-education and later as Assistant (1940) and Associate (1943) Professor. He joined the US Army Medical Administrative Corps in 1944, working in Butler, Pennsylvania until 1946. He returned to Northwestern in 1947, where he remained until his death in 1975.

Carhart notch
Carhart notch effect is a decrease in the bone-conduction hearing at the 2000 Hz region of patients with otosclerosis first reported by and therefore named after Raymond Carhart.