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December 1955

Speech Audiometry by Bone Conduction

Author Affiliations

Kansas City, Kan.
From the Department of Otorhinolaryngology of the University of Kansas School of Medicine.

AMA Arch Otolaryngol. 1955;62(6):632-635. doi:10.1001/archotol.1955.03830060064015

The importance of the use of speech audiometry by air conduction in conjunction with pure tone tests in the diagnosis and evaluation of hypacusis is unquestioned in the field of otology. Each method contributes uniquely to a fuller understanding of a particular case of hearing impairment. In addition, past research has clearly indicated that a high degree of relationship exists between the binaural speech reception threshold as determined with Harvard spondees and the better ear average threshold value for pure tones 500, 1000, and 2000 cps when both measures are obtained by air conduction. Carhart,* in a series of clinical studies, reported a coefficient of correlation of about 0.75 between the two types of tests for both normalhearing and deaf subjects. The correlation between the average pure tone threshold and the speech reception threshold is of the same order of magnitude as the test-retest reliability of either method.

Pure tone

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