This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
To the Editor:—
There has been some correspondence in The Journal in recent weeks about phonographic recording of heart sounds.For historical interest, I would add that Dr. Richard Cabot made such recordings from Oct. 31, 1925 to Jan. 6, 1926 in New York City with the Columbia Phonograph Company, now the Columbia Recording Corporation. I have some of his old records, which are interesting rather because of their excellent reproduction of Dr. Cabot's voice than for their value in phonocardiography, a characteristic still true of many other such records, though improvements are in progress in the effort to develop this procedure into a practical method of teaching and of recording.
White PD. PHONOGRAPHIC RECORDING OF HEART SOUNDS. JAMA. 1942;118(16):1389. doi:10.1001/jama.1942.02830160049024