Sound

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  • 1908 Vintage Magnetic Audio Recording Instrument T-shirt

    $34.00

    J.C. Sherman in 1908, a patent for Instruments for Magnetically Recording Sound Vibrations. This invention relates to instruments by which articulate speech and other sounds are recorded by producing in a-record element varying degrees of magnetization corresponding to the sound vibrations.

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  • 1949 Magnetic Recorder Vintage T-Shirt

    $34.00

    In 1949, C. N. Hickman invented a magnetic recorder. The present invention relates to electromagnetic apparatus, and more particularly to an apparatus for either recording or reading data across an elongated magnetizable element instead of lengthwise thereof.

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