The Evolving World of Acoustics and Vibration TechnologiesBinaural hearing aids with a tin frame. Unfortunately, there’s no record of its exact creation date, but functionally, it represents the foundation of modern hearing aids. Placed against the ear, it offers significant amplification with remarkably natural sound quality. Before electric hearing aids, these sound collectors played a vital role in aiding hearing. Their invention spurred further technological advancements, leading to vacuum tubes, transistors, and inte-grated circuits—technologies that now form the heart of modern hearing aids.Courtesy of the Museum for the Science of Sound, Kobayasi Institute of Physical ResearchPhoto by Yuki AkabaBinaural hearing aidsOwned by the Museum for the Science of Sound, Kobayasi Institute of Physical ResearchThe World of Acoustics
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