The purpose of this paper is to provide examples of phonetic transcriptions using acoustical data and analyze the pronunciation of fricatives in running speech. Using Praat—a phonetic analysis program—and voice recordings, a (slightly modified) standardized script was accurately transcribed into IPA, the International Phonetic Alphabet. Using the same data, an in-depth analysis on fricatives of a native speaker of General American English (GAE) showed the speaker whispered during the recordings. This is supported by numerical data of several acoustic correlates, the primary correlates being intensity and voicing. The intensity of all fricatives was lower than a standard GAE speaker by an average of 14 dB and normalized within 4 dB. On average, all fricatives were produced as voiceless or devoiced.
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Wallin, Joshua and Koffi, Ettien
"The Acoustic Correlates of Fricatives in Whispered Speech: An Idiolectal Analysis,"
Linguistic Portfolios: Vol. 6
, Article 9.
Available at: http://repository.stcloudstate.edu/stcloud_ling/vol6/iss1/9