Abstract
I HAVE greatly improved my gramophone, at any rate for use in rooms of moderate dimensions, by applying to it both the long tube arrangement for eliminating scraping noises–described by Mr. Ernest De la Rue in NATURE of November 14, 1912—and also the “donkey's ear” form of trumpet, devised by Mr. Sidney G. Brown, which I have the latter's permission to describe.
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SWINTON, A. Gramophone Improvements. Nature 91, 558 (1913). https://doi.org/10.1038/091558c0
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DOI: https://doi.org/10.1038/091558c0
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