Chapter published in:
Grammatical and Sociolinguistic Aspects of Ethiopian Languages
Edited by Derib Ado, Almaz Wasse Gelagay and Janne Bondi Johannessen †
[IMPACT: Studies in Language, Culture and Society 48] 2021
► pp. 345364
Aldubai, Nadhim Abdulamalek
2015The impact of geminates on the duration of the preceding and following vowels in Ta’zi dialect. Arab World English Journal (AWEJ) 6(1): 335–358. CrossrefGoogle Scholar
Al-Tamimi, Jalal & Khattab, Ghada
2015Acoustic cue weighting in the singleton vs geminate contrast in Lebanese Arabic: The case of fricative consonants. The Journal of the Acoustical Society of America 138(1): 344–360. CrossrefGoogle Scholar
Aoyama, Katsura & Reid, Lawrence A.
2006Cross-linguistic tendencies and durational contrasts in geminate consonants: An examination of Guinaang Bontok geminates. Journal of the International Phonetic Association 36(2): 146–156. CrossrefGoogle Scholar
Beckman, Mary E.
1982Effects of accent on vowel duration in Japanese. The Journal of the Acoustical Society of America 71: 23, 32.Google Scholar
Begus, Gasper
2017Effects of ejective stops on preceding vowel duration. The Journal of the Acoustical Society of America 142(4): 2168–2184. CrossrefGoogle Scholar
Behne, D., Moxness, B. & Nyland, A.
1996Acoustic-phonetic evidence acoustic-phonetic evidence in Norwegian. TMH-QPSR 37(2): 13–16.Google Scholar
Bender, M. Lionel, Mulugeta, Etefa & Stinson, D. Lloyd
1976Two Cushitic languages. In Language in Ethiopia, M. Lionel Bender, J. Donald Bowen, R. L. Cooper & Charles A. Ferguson, 130–154. London: OUP.Google Scholar
Bender, M. Lionel
1971Languages of Ethiopia. A new lexicostatistic classification and some problems of diffusion. Anthropological Linguistics 13(5): 165–288.Google Scholar
Blažek, Václav
2010Glottochronological classification of Oromo dialects. Lingua Posnaniensis 52(2): 27–42. CrossrefGoogle Scholar
Boersma, Paul & Weenink, David
2013Praat: Doing Phonetics by Computer [Computer software]. http://​www​.fon​.hum​.uva​.nl​/praat/> (13 May 2013).
Bradlow, Ann R., Torretta, Gina M. & Pisoni, David B.
1996Intelligibility of normal speech: Global and fine-grained acoustic-phonetic talker characteristics. Speech Communication 20(2): 255–272. CrossrefGoogle Scholar
Braunschweiler, Norbert
1997Integrated cues of voicing and vowel length in German: A production study. Language and Speech 4(4): 353–376. CrossrefGoogle Scholar
Catford, John C.
1977Fundamental Problems in Phonetics. Bloomington IN: Indiana University Press.Google Scholar
Clopper, Cynthia G., Pisoni, David B. & de Jong, Kenneth
2005Acoustic characteristics of the vowel systems of six regional varieties of American English. The Journal of the Acoustical Society of America 118(3): 1661–1676. CrossrefGoogle Scholar
de Jong, Kenneth
2004Stress, lexical focus, and segmental focus in English: Patterns of variation in vowel duration. Journal of Phonetics 32: 493–516. CrossrefGoogle Scholar
Dissassa Melaku
1980Some Aspects of Oromo Phonology. Lawrence KS: Kansas State University.Google Scholar
Dommergues, Jean-Yves
2007Long and short vowels in Swiss French: Their production and perception. French Language Studies 17: 1–19. CrossrefGoogle Scholar
Durisala, Naresh, Nambi, Arivudai & Batra, Ridhima
2011Intelligibility and acoustic characteristics of clear and conversational speech in Telugu. Indian Journal of Otolaryngology and Head & Neck Surgery 63(2): 165–171. CrossrefGoogle Scholar
Ericsdotter, Christine & Ericsson, Anna M.
2001Gender differences in vowel duration in read Swedish: Preliminary results. Lund University Working Papers 49: 34–37.Google Scholar
Escudero, Paola, Boersma, Paul, Schurt Rauber, Andréia & Bion, Ricardo
2008A cross-dialect acoustic description of vowels: Brazilian and European Portuguese. PACS number(s): 43.70.Fq, 43.70.Kv, 43.72.Ar 1–23. https://​www​.fon​.hum​.uva​.nl​/paul​/papers​/BPEP​_vowels64​_pic​.pdf> (19 August 2020).
Esposito, Anna and Maria Gabriella Di Benedetto
1999Acoustical and perceptual study of gemination in Italian stops. Journal of the Acoustical Society of America 106. 2051–2062. CrossrefGoogle Scholar
Feda Negesse
2015Classification of Oromo dialects: A computational approach. International Journal of Computational Linguistics 6(1): 1–10.Google Scholar
Fox, Robert A. & Jacewicz, Ewa
2009Cross-dialectal variation in fomant dynamics of American English vowels. The Journal of the Acoustical Society of America 126(5): 2603–2618. CrossrefGoogle Scholar
Gordon, Matthew
2016Phonological Typology. Oxford: OUP. CrossrefGoogle Scholar
Gordon, Matthew & Lagefoged, Peter
2001Phonation types: A cross-linguistic overview. Journal of Phonetics 29: 383–406. CrossrefGoogle Scholar
Gragg, Gen
1976Oromo of Wollega. In The Non-Semitic Language of Ethiopia, M. Lionel Bender (ed.), 166–195. Lansing MI: Michigan University Press.Google Scholar
Hajek, John & Stevens, Mary
2008Vowel duration, compression and lengthening in stressed syllables in Central and Southern varieties of standard Italian. In Interspeech, 22–26 September, 516–519. Brisbane, Australia.Google Scholar
Hansen, Benjamin B.
2004Production of Persian geminate stops: effects of varying speaking rate. In Augustine Agwuele, Willis Warren & Sang-Hoon Park (eds.) Proceedings of the 2003 Texas linguistics society conference. Somerville, Mass.: Cascadilla. 86–95.Google Scholar
Heine, Bernd
1981The Waata dialect of Oromo. Grammatical sketch and vocabulary. In Language and Dialect Atlas of Kenya, Vol. 1: Geographical and Historical Introduction: Language and Society, Selected Bibliography, Bernd Heine & Wilhelm J. G. Möhlig. Berlin: Dietrich Reimer.Google Scholar
Hertrich, I. & Ackermann, H.
1997Articulatory control of phonological vowel length contrasts: Kinematic analysis of labial gestures. Journal of the Acoustical Society of America 102: 523. CrossrefGoogle Scholar
Hillenbrand, James M., Michael J. Clark & Robert A. Houde
2000Some effects of duration on vowel recognition. J. Acoust. Soc. Am. 108(6): 3013–3022.. CrossrefGoogle Scholar
Hillenbrand, James, Getty, Laura A., Clark, Michael J. & Wheeler, Kimberlee
1995Acoustic characteristics of American English vowels. The Journal of the Acoustical Society of America 97(5), Pt. 1, 97(5): 3099–3111. CrossrefGoogle Scholar
Hirata, Yukari
2004Relational acoustic invariance in Japanese vowel length distinction. From Sound to Sense 11–13 June 2004, MIT.Google Scholar
Hoequist Jr., Charles
1983Syllable duration in stress-syllable- and mora-timed languages. Phonetica 40: 203–237. CrossrefGoogle Scholar
Holt, Yolanda F., Jacewicz, Ewa & Fox, Robert Allen
2015Variation in vowel duration among southern African American English speakers. American Journal of Speech-Language Pathology 24: 460–469. CrossrefGoogle Scholar
Homma, Yayoi
1981Durational relationship between Japanese stops and vowels. Journal of Phonetics 9: 273–281. CrossrefGoogle Scholar
Idemaru, Kaori & Guion, Susan G.
2008Acoustic covariants of length contrast in Japanese stops. Journal of the International Phonetic Association 38(2): 167–186. CrossrefGoogle Scholar
Jacewicz, Ewa, Fox, Robert Allen & Salmons, Joseph
2007Vowel duration in three American English dialects. American Speech 82(4): 367–385. CrossrefGoogle Scholar
Johnson, Keith & Martin, Jack
2001Acoustic vowel reduction in Creek: Effects of distinctive length and position in the word. Phonetica 58: 81–102. CrossrefGoogle Scholar
Kawahara, Shigeto & Braver, Aaron
2014Durational properties of emphatically lengthened consonants in Japanese. Journal of the International Phonetic Association 44(3): 138–260. CrossrefGoogle Scholar
Kaye, Alan S.
2005Gemination in English. English Today 21(2): 43–55. CrossrefGoogle Scholar
Kebede Hordofa
2009Towards the Genetic Classification of the Afaan Oromoo Dialects. PhD dissertation, University of Oslo.Google Scholar
Kong, Qing-Ming
1987Influence of tones upon vowel duration in Cantonese. Language and Speech 30(4): 387–399. CrossrefGoogle Scholar
Kukkonen, P.
1990Patterns of Phonological Disturbances in Adult Aphasia. PhD dissertation, University of Helsinki.Google Scholar
Lennes, M.
2017Spect–speech corpus toolkit for praat (Version 1.0.0). Retrieved from https://​github​.com​/lennes​/spect​/releases
Lippus, Partel, Asu, Eva. L., Teras, Pire & Tuisk, Tuuli
2013Quantity-related variation of duration, pitch and vowel quality in spontaneous Estonian. Journal of Phonetics 41: 17–28. CrossrefGoogle Scholar
Lloret, Maria-Rosa
1988Gemination and Vowel Length in Oromo Morphophonology. PhD dissertation, University of Indiana at Bloomington.Google Scholar
Luce, Paul A. & Charles-Luce, Jan
1985Contextual effects on vowel duration, closure duration, and the consonant/vowel ratio in speech production. The Journal of the Acoustical Society of America 78(6): 1949–1957. CrossrefGoogle Scholar
Mayr, Robert & Davies, Hannah
2011A cross-dialectal acoustic study of the monophthongs and diphthongs of Welsh. Journal of the International Phonetic Association 41(1): 1–25. CrossrefGoogle Scholar
McClure, J. Derrick
1977Vowel duration in a Scottish accent. Journal of International Phonetic Association 7(1): 10–16. CrossrefGoogle Scholar
Most, Tova, Amir, Offer & Tobin, Yishai
2000The Hebrew vowel system: Raw and normalised acoustic data. Language and Speech 43(3): 295–308. CrossrefGoogle Scholar
Oder, A. L., Clopper, C. G., and Ferguson, S. H.
(2013)  Effects of dialect on vowel acoustics and intelligibility,” J. Int. Phon. Assoc. 43, 23–35. CrossrefGoogle Scholar
Owens, Jonathan
1985A Grammar of Harar Oromo [Cushitic Language Studies 4]. Hamburg: Helmut Buske.Google Scholar
Payne, Elinor M.
2005Phonetic variation in Italian consonant gemination. Journal of the International Phonetic Association 35(2): 153–84. CrossrefGoogle Scholar
Purnell, Thomas, Salmons, Joseph, Tepeli, Dilara & Mercer, Jennifer
2005Structured heterogeneity and change in laryngeal phonetics: Upper Midwestern final obstruents. Journal of English Linguistics 33(4): 307–338. CrossrefGoogle Scholar
Raphael, L.
1972 “Preceding vowel duration as a cue to the perception of the voicing characteristic of word-final consonants in American English,” J. Acoust. Soc. Am. 51, 1296–1303. CrossrefGoogle Scholar
Ridouane, Rachid
2010Geminate at the junction of phonetics and phonology. In Cécile Fougeron, Barbara Kühnert, Mariapaola D'Imperio and Nathalie Valleé (eds.), Laboratory phonology 10, 61–90. Berlin: Mouton de Gruyter.Google Scholar
Rosner, B. S. & Pickering, John Brian
1995Vowel Perception and Production. Oxford: OUP.Google Scholar
Schoormann, Heike E., Heeringa, Wilbert J. & Peters, Jorg
2017A cross-dialectal acoustic study of Saterland Frisian vowels. The Journal of the Acoustical Society of America 141(4): 2893–2908. CrossrefGoogle Scholar
Stroomer, Harry
1995A Grammar of Borana Oromo (Kenya). Cologne: Rüdiger Köppe.Google Scholar
Tjaden, Kris, Richards, Emily, Kuo, Christina, Wilding, Greg & Sussman, Joan
2014Acoustic and perceptual consequences of clear and loud speech. Folia Phoniatr Logop 65: 214–220. CrossrefGoogle Scholar
Tserdanelis, Georgios and Amalia Arvaniti
2001The acoustic characteristics of geminate consonants in Cypriot Greek. In Aggouraki, Yoryia, Amalia Arvaniti, J. I. M. Davy, Dyonysis Goutsos, Marilena Karyolaimou, Anna Panagiotou, Andreas Papapavlou, Pavlos Pavlou and Anna Roussou (eds.), Proceedings of the Fourth International Conference on Greek Linguistics, 29–36. Thessaloniki: University Studio Press.Google Scholar
Tsukada, Kimiko
2009An acoustic comparison of vowel length contrasts in Arabic, Japanese and Thai: Durational and spectral data. International Journal on Asian Language Processing 19(4): 127–138.Google Scholar
Velayudhan, S. & Howie, John M.
1974Acoustical measurements of distinctive vowel quantity in Malayalam. Language and Speech 17(1): 95–102. CrossrefGoogle Scholar
Wako Tola
1981The Phonology of Mecha Oromo. MA thesis, Addis Ababa University.Google Scholar
Wang, Youfa & Chen, Hsin Jen
2012Use of percentile and Z-scores in anthropometry. In Handbook of Anthropometry: Physical Measures of Human Form in Health and Disease, by Victor R. Preedy (ed.), 29–48. Heidelberg: Springer. CrossrefGoogle Scholar
Wayland, Ratree
1997Non-native production of Thai: Acoustic non-native production of Thai: Acoustic. Applied Linguistics 18(3): 345–373. CrossrefGoogle Scholar
Wedekind, Klaus
1989Status and dynamics of Ethiopian vowel systems. Journal of Ethiopian Studies 22: 105–172.Google Scholar
Williams, Daniel & Escudero, Paola
2014A cross-dialectal acoustic comparison of vowels in Northern and Southern British English. The Journal of the Acoustical Society of America 13 (5): 2751–2761. CrossrefGoogle Scholar