LOUD NOISES HELP THE DEAF (Sep, 1933)
LOUD NOISES HELP THE DEAF
Based on the theory that exercise of the eardrums aids certain cases of defective hearing, Dr. J. B. Prager, of New York City, has devised a phonograph that subjects patients, through earphones, to loud noises. His records include dynamite explosions, the shrieking and clanging of fire engines, thunderstorms, and waves beating on rocks. Knobs on a panel resembling a giant radio set regulate the volume. The full blast of a fire siren may at first produce only a pleasant tingling in the ears, Dr. Prager reports.