Stress groups and rhythm in American Spanish. Toledo, G. A. The Journal of the Acoustical Society of America, 78(S1):S19.
doi  abstract   bibtex   
This paper reports a description of rhythm in several discourses both in spontaneous speech and in the oral reading of narrative prose, essay, poetry in free verse, and sonnets in American Spanish. These speech materials were digitized and an acoustic study of the duration of stress groups---a word with primary stress plus unstressed words in proclitic and enclitic positions---was undertaken. A variance analysis of percentage deviations of these stress groups showed values in an ample range: a lower degree of variability in poetry reading and a higher degree in prose reading and spontaneous speech. Also, there was a certain tendency to temporal equalization in stress groups of different sizes and, inversely, a tendency to proportionality between the increment in size and the increased duration. This would appear to suggest that each discourse would be rhythmically supported by a twofold tendency, syllable- and stress-timing, combined in a free scheme. This claim agrees with previous research providing evidence on interstress interval patterns of similar oral discourses in American Spanish [G. Toledo, J. Acoust. Soc. Am. Suppl. 1 77, S53 (1985)].
@article{toledo_stress_1985,
	Author = {Toledo, Guillermo Andrés},
	Date = {1985},
	Date-Modified = {2017-04-19 08:04:09 +0000},
	Doi = {10.1121/1.2022682},
	Journal = {The Journal of the Acoustical Society of America},
	Keywords = {acoustic phonetics, América, geographical variation, lexical stress, phonetics, phonology, prosody, rhythm, Spanish, stress group, temporal factors},
	Number = {S1},
	Pages = {S19},
	Title = {Stress groups and rhythm in American Spanish},
	Volume = {78},
	Abstract = {This paper reports a description of rhythm in several discourses both in spontaneous speech and in the oral reading of narrative prose, essay, poetry in free verse, and sonnets in American Spanish. These speech materials were digitized and an acoustic study of the duration of stress groups---a word with primary stress plus unstressed words in proclitic and enclitic positions---was undertaken. A variance analysis of percentage deviations of these stress groups showed values in an ample range: a lower degree of variability in poetry reading and a higher degree in prose reading and spontaneous speech. Also, there was a certain tendency to temporal equalization in stress groups of different sizes and, inversely, a tendency to proportionality between the increment in size and the increased duration. This would appear to suggest that each discourse would be rhythmically supported by a twofold tendency, syllable- and stress-timing, combined in a free scheme. This claim agrees with previous research providing evidence on interstress interval patterns of similar oral discourses in American Spanish [G. Toledo, J. Acoust. Soc. Am. Suppl. 1 77, S53 (1985)].},
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