Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 645
n the PhysicalReview, Nov. 1902, and shows curves for the five vowels 624 SOUND CHAP. XI in question, at two pitches for each. The vowels areindicated by a special notation at the left margin, thenumbers near, 1, 4, 6, and 7, refer to the voice by whichthe vowel was sung, while the numbers 272,… … /\/Wy^ 6 512 256 7 AmJV\aJWJI/v^^I 7 ^A^/v^N/N/\/w\/vw\A^~v\/^/\A^ 512 Fig. 104.—Beviers Vowel Curves. Boston, patented in the United States the speakingtelephone. The invention was favourably reported on byLord Kelvin at the British Association in 1876, and thetelephone itself was exhibited at the…
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