Abstract
THE compound resonators exhibited at the conversazione of the Royal Society in June last have proved useful for obtaining photographic records of music and speech which clearly exhibit their constituent frequencies. Fig. 1 is a record of a scale played on an ordinary tin whistle, which, contrary to popular opinion, is known to produce nearly pure notes free from overtones. It will be noticed (1) that there is no overlapping of the notes, each note, when sounding, leaving all the resonators undisturbed except the particular resonator tuned to it. This applies even where the interval is only a semitone; (2) the sounding of a note does not affect the resonator an octave below or above. This observation settles a point in resonance concerning which, I believe, there has been some doubt hitherto.
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D'ALBE, E. Analytical Sound Records. Nature 114, 537 (1924). https://doi.org/10.1038/114537a0
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DOI: https://doi.org/10.1038/114537a0
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