ERIC Number: ED041280
Record Type: RIE
Publication Date: 1970-Mar
Reference Count: 0
Criteria for the Segmentation of Vowels on Duplex Oscillograms.
Naeser, Margaret A.
This paper develops criteria for the segmentation of vowels on duplex oscillograms. Previous vowel duration studies have primarily used sound spectrograms. The use of duplex oscillograms, rather than sound spectrograms, permits faster production (real time) at less expense (adding machine paper may be used). The speech signal can be more spread out on a duplex oscillogram than on a sound spectrogram, increasing ease of segmentation; duplex oscillograms provide equally clear displays for speech of high- or low-fundamental frequency. Segmentation criteria are developed for /p, b, s, z/ occurring in initial and final position from the sound spectrogram segmentation criteria reported by Peterson and Lehiste (1960). Vowel duration measurements segmented from 64 sound spectrograms and 64 duplex oscillograms of the same CVC utterances are compared. The two sets of measures correlate .97, indicating that the criteria for the segmentation of vowels on duplex oscillograms presented in this paper are reliable. (Author/JD)
Publication Type: N/A
Education Level: N/A
Sponsor: National Center for Educational Research and Development (DHEW/OE), Washington, DC.
Authoring Institution: Wisconsin Univ., Madison. Research and Development Center for Cognitive Learning.
Note: Report from the Project on Language Concepts and Cognitive Skills Related to the Acquisition of Literacy