phonophotographyn.
/ˌfəʊnə(ʊ)fəˈtɒɡrəfi/, U.S. /ˌfoʊnoʊfəˈtɑɡrəfi/ Now chiefly historical.
The photographic recording of sound waves (esp. those produced by speech or singing), by means of an apparatus which responds to sound vibration whilst simultaneously projecting a ray of light on to a moving photographic film.
ΘΚΠ
the mind > language > linguistics > study of speech sound > [noun] > methods
palatography1902
phonophotography1927
voiceprinting1932
phonometry1936
phonometrics1957
1927 Science 28 Jan. 112 Professor Carl E. Seashore..gave the retiring vice-presidential address on ‘Phonophotography in Measurement of Expression of Emotion in Music and Speech’, in which he presented interesting results from his laboratory studies on this topic.
1928 M. Metfessel Phonophotogr. in Folk Music 22 All the twists, quavers, trills, breaks in the voice, quick slurs, erratic tempi and other similar features..are..what phonophotography will reveal.
1935 Amer. Speech 10 312/2 By means of phonophotography the readings of several distinguished poets were analyzed for pitch, loudness and duration in an effort to solve some of the fundamental problems of verse.
1968 P. Oliver Screening Blues 10 Phonophotography and voice-prints may give an accurate translation of certain characteristics of the voice in graphic form.
2000 J. Tick Ruth Crawford Seeger 278 She followed his advice in quoting mechanical transcriptions of ‘Swing Low, Sweet Chariot’ on graph from Metfessel's early work on phonophotography.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1927