Electromyographic and Acoustical Study of the Production of Certain Final Clusters
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The possibility that speech may be perceived with reference to articulation prompted this preliminary study of muscle action during speech production. The question investigated was: what is the difference, if any, in the acoustic and articulatory characteristics of /f/ in utterance final position and /f/ embedded in final consonant clusters. The acoustic duration of /f/ friction, measured spectographically, was about twice as great in final position as in any other position. On the other hand, electromyograms were similar for all positions of /f/. The change in /f/ friction duration from final to prefinal position is therefore a contextual effect on acoustical properties of production alone. The motor gesture is more independent of context.