Kenneth N. Stevens

LeBel Professor of Electrical Engineering

Massachusetts Institute of Technology

Consultant, Sensimetrics Corporation



S.B., Electrical Engineering, UNIVERSITY OF TORONTO, Toronto, Canada, 1945

S.M., Electrical Engineering, UNIVERSITY OF TORONTO, Toronto, Canada, 1945

Sc.D., Electrical Engineering, MASSACHUSETTS INSTITUTE OF TECHNOLOGY, Cambridge, MA, 1952


Professional Experience

1945-1946               Fellow, Ontario Research Foundation

1946-1948               Instructor, University of Toronto

1951-1952               Instructor, Massachusetts Institute of Technology

1952-1954               Research Staff Member, Massachusetts Institute of Technology

1952-1988               Consultant, Bolt, Beranek and Newman, Inc.

1954-1957       Assistant Professor, Massachusetts Institute of Technology

1957-1963                      Associate Professor, Massachusetts Institute of Technology

1962-1963               Researcher, Royal Institute of Technology, Sweden

1963-1977               Professor, Massachusetts Institute of Technology

1968-1972               Member, Communicative Sciences Study Section, NIH Division of Research Grants                            

1969-1970                      Visiting Professor, University College, London, Department of Phonetics

1972                        Chairman, Communicative Sciences Study Section, NIH Division of Research Grants

1977-present         C. J. LeBel Professor, Massachusetts Institute of Technology

1983-1986               Member, National Advisory Council on Neurological and Communicative Disorders and Stroke, NIH

1988-present         Consultant, Sensimetrics Corporation

1991-present         Adjunct Professor, MGH Institute of Health Professions



Guggenheim Fellow, 1962-63; Fellow, Acoustical Society of America; Fellow, Institute of Electrical and Electronic Engineers; Fellow, United States Public Health Service, 1969-70; President, Acoustical Society of America, 1976-77; Silver Medal in Speech Communication, Acoustical Society of America, 1983; Jacob Javits Award, 1986; Member, National Academy of Engineering, 1986; Fellow, American Academy of Arts and Sciences, 1989; Quintana Voice Research Award, 1992; Gold Medal, Acoustical Society of America, 1995; Medal, European Speech Communication Association (ESCA), 1995; Frank E. Perkins Award, Massachusetts Institute of Technology, 1997; Member, National Academy of Sciences, 1999; National Medal of Science, 1999.


Selected Publications

Stevens, K.N. (1971) Airflow and turbulence noise for fricative and stop consonants:  Static considerations, J. Acoust. Soc. Am. 50: 1180-1192

Stevens, K.N. (1972)  The Quantal nature of speech; Evidence from articulatory-acoustic data.  In P.B. Denes and E.E. David Jr. (Eds.)  Human Communication:  A Unified View, New York:  McGraw-Hill, pp 51-66.

Stevens, K.N. and D.H. Klatt (1974)  The role of formant transitions in the voiced-voiceless distinction for stops, J. Acoust. Soc. Am.      55: 653-659

Stevens, K.N. (1977)  Physics of laryngeal behavior and larynx modes, Phonetica 34:  264-279

Blumstein, S.E. and K.N. Stevens (1979)  Acoustic invariance in speech production:  Evidence from measurements of the spectral characteristics of stop consonants, J. Acoust. Soc. Am. 66:  1001-1017.

Stevens, K.N. (1980)  Acoustic correlates of some phonetic categories, J. Acoust. Soc. Am.  68: 836-842.

Stevens K.N. and M. Hirano (Eds.) (1981) Vocal-Fold Physiology, Tokyo: University of Tokyo Press.

Stevens, K.N., R.S. Nickerson and A.M. Rollins (1983)  Suprasegmental and postural  aspects of speech production and their effect on   articulatory skills and intelligibility.  In I. Hochberg, H. Levitt and M.J. Osberger (Eds.)  Speech of the Hearing Impaired, Baltimore:  University Park Press, Ch. 2, pp 35-51.

Hawkins, S. and K.N. Stevens (1985) Acoustic and perceptual correlates of the nasal-nonnasal distinction for vowels, J. Acoust. Soc. Am. 77:1560-1575.

Stevens, K.N., S.J. Keyser and H. Kawasaki (1986)  Toward a phonetic and phonological investigation of redundant features.  In J. Perkell and D.H.Klatt (Eds.)  Symposium on Invariance and Variability of Speech Processes, Hillsdale, NJ:  Lawrence Erlbaum, Ch. 20, pp 426-463.

Stevens K.N. (1989) On the quantal nature of speech, J. of Phonetics 17, 3-46.

Stevens, K.N. and C.A.Bickley (1991)  Constraints among parameters simplify control of Klatt formant synthesizer, J. of Phonetics 19, 161-174.

Stevens, K.N. (1991)  Vocal-fold vibration for obstruent consonants.  In J. Gauffin and B. Hammarberg (Eds.)  Vocal Fold Physiology, San Diego:  Singular, 29-36.

Halle, M. and K.N. Stevens (1991) Knowledge of language and the sounds of speech.  In J. Sundberg, L. Nord, and R. Carlson (Eds.),      Music, Language, Speech and Brain, Basingstoke, Hampshire: Macmillan Press, 1-19.

Stevens, K.N. (1993) Models for the production and acoustics of stop consonants.  In Speech Communication, 13, 367-375.

Stevens, K.N. (1994)  Scientific substrates of speech production.  In F.D. Minife (Ed.)  Introduction to Communication Sciences and Disorders, San Diego:  Singular, 399-437.

Keyser, S.J. and K.N. Stevens (1994) Feature geometry and the vocal tract.   Phonology 11, No 2, 207-236.

Bickley, C.A., K.N. Stevens, D.R. Williams (1997) A framework for synthesis of segments based on pseudoarticulatory parameters.   In J.P.H. Van Santen, R.W. Sproat, J.P. Olive and J. Hirschberg (eds.), Progress in Speech Synthesis, Springer-Verlag: New York, 211-220.

Stevens, K.N. (1997) Articulatory-acoustic-auditory relationships.   In W.J. Hardcastle and J. Laver (eds.), The Handbook of Phonetic Sciences , Blackwell: Oxford, 462-506.

Stevens, K.N. (1997) Models of speech production.   In M. Crocker (ed.) Encyclopedia of Acoustics, Vol. 4, Chapter 125, New York: Wiley & Sons, Inc., 1565-1578.

Halle, M. and K.N. Stevens (1997) The postalveolar fricatives of Polish.  In S. Kiritani, H. Hirose and H. Fujisaki (eds.), Speech Production and Language: In Honor of Osamu Fujimura, Mouton de Gruyter: Berlin, 177-193.

Stevens, K.N. (2000).  Diverse acoustic cues at consonantal landmarks.  In a Special Issue of Phonetica 57, 139-151.

Chen, M.Y., K.N. Stevens, H.-K. Kuo and H. Chen (2000).  Contributions of the study of disordered speech to speech production models.  J. Phonetics 28, 303-312.

Keyser, S.J. and K.N. Stevens (2001) Enhancement revisited.  In M. Kenstowic (ed.), Ken Hale: A Life in Language.   Cambridge MA: MIT Press, 271-291.

Stevens, K.N. (2001) The properties of the vocal-tract walls help to shape several phonetic distinctions in language.  In Travaux du Cercle Linguistique de Copenhague,Vol. XXXI, 285-297.

Chen, H. and K.N. Stevens (2001) An acoustical study of the fricative /s/ in the speech of individuals with dysarthria.  J. Speech, Language, and Hearing Research 44, 1300-1314.

Hanson, H.M., K.N. Stevens, H.-K. Kuo, M.Y. Chen and J. Slifka (2001)  Towards models of phonation.  J. Phonetics 29, 451-480.

Stevens, K.N. (2002) Toward a model for lexical access based on acoustic landmarks and distinctive features.  J. Acoust. Soc. Am. 111, 1872-1891.

Hanson, H.M. and K.N. Stevens (2002) A quasiarticulatory approach to controlling acoustic source parameters in a Klatt-type formant synthesizer using Hlsyn.  J. Acoust. Soc. Am. 112, 1158-1182.