Speakers change the level of their voice when they listen to noise or hear their own speech amplified: When noise level is increased the voice becomes louder, whilst the response to speech amplification is a reduction of voice level. The question posed here is whether, when the level of various sounds concurrent with vocalisation is raised, the direction of the vocal level response is like that to the speaker's speech or like that to noise. Voice level was measured in response to speech, white noise, delayed auditory feedback, frequency-shifted speech, and noise created by an “Edinburgh masker”. Selection of these sounds was governed by the role they have played in the explanation and treatment of stuttering. Fluent speakers and stutterers increased voice level when played delayed auditory feedback, the Edinburgh masker, or white noise; they reduced the level slightly in the remaining conditions. These results are used to assess auditory feedback monitoring accounts of the speech behavior of fluent speakers and stutterers, and some implications for the treatment of stuttering are pointed out.
Black, J.W. (1951). The effect of delayed sidetone upon vocal rate and intensity. Journal of Speech and Hearing Disorders, 16, 56–60.
2.
Brown, G.S., and Campbell, D.P. (1948). Principles of Servomechanisms.New York: Wiley.
3.
CCITT (1989a). Interactions between sidetone and echo. CCITT — International Telegraph and Telephone Consultative Committee, Contribution, Com XII No. BB.
4.
CCITT (1989b). Experiments on short-term delay and echo in conversation. CCITT — International Telegraph and Telephone Consultative Committee, Contribution, Com XII No. AA.
5.
Cherry, C., and Sayers, B.McA. (1956). Experiments upon the total inhibition of stammering by external control and some clinical results. Journal of Psychosomatic Research, 1, 233–246.
6.
Dewar, A., Dewar, A.W., Austin, W.T.S., and Brash, H.M. (1979). The long-term use of an automatically triggered auditory feedback masking device in the treatment of stammering. British Journal of Disorders of Communication, 14, 219–229.
7.
Dreher, J.J., and O'Neill, J.J. (1958). Effects of ambient noise on speaker intelligibility of words and phrases. Laryngoscope, 68, 539–548.
8.
Fairbanks, G. (1955). Selected vocal effects of delayed auditory feedback. Journal of Speech and Hearing Disorders, 20, 333–345.
9.
Fletcher, H., Raff, G.M., and Parmley, F. (1918). Study of the effects of different sidetones in the telephone set. Western Electrical Company, Report No. 19412, Case No. 120622.
10.
Fowler, C.A., Rubin, P., Remez, R.E., and Turvey, M.T. (1980). Implications for speech production of a general theory of action. In B. Butterworth (ed.), Language Production (pp. 373–420). New York: Academic Press.
11.
Gibney, N.J. (1973). Delayed auditory feedback: Changes in the volume intensity and the delay interval as variables affecting the fluency of stutterers' speech. British Journal of Psychology, 64, 55–63.
12.
Harrington, J. (1988). Stuttering, delayed auditory feedback, and linguistic rhythm. Journal of Speech and Hearing Research, 31, 36–47.
13.
Hayden, P.A., Scott, D.A., and Addicott, J. (1977). The effects of delayed auditory feedback on the overt behaviors of stutterers. Journal of Fluency Disorders, 2, 235–246.
14.
Howell, P., and Archer, A. (1984). Susceptibility to the effects of delayed auditory feedback. Perception & Psychophysics, 36, 296–302.
15.
Howell, P., El-Yaniv, N., and Powell, D.J. (1987). Factors affecting fluency in stutterers when speaking under altered auditory feedback. In H.F.M. Peters and W. Hulstijn (eds.), Speech Motor Dynamics in Stuttering (pp. 361–369). New York: Springer-Verlag.
16.
Howell, P., Marchbanks, R.J., and El-Yaniv, N. (1986). Middle ear muscle activity during vocalisation in normal speakers and stutterers. Acta Oto-Laryngologica, 102, 396–402.
17.
Howell, P., and Powell, D.J. (1984). Hearing your voice through bone and air: Implications for explanations of stuttering behavior from studies of normal speakers. Journal of Fluency Disorders, 9, 247–264.
18.
Howell, P., and Powell, D.J. (1987). Delayed auditory feedback with delayed sounds varying in duration. Perception & Psychophysics, 42, 166–172.
19.
Howell, P., Powell, D.J., and Khan, I. (1983). The amplitude contour of the delayed signal and interference in delayed auditory feedback tasks. Journal of Experimental Psychology: Human Perception and Performance, 9, 772–784.
20.
Howell, P., Wingfield, T., and Johnson, M. (1988). Characteristics of the speech of stutterers during normal and altered auditory feedback. In W.A. Ainsworth and J.N. Holmes (eds.), Proceedings Speech 88, Vol. 3 (pp. 1069–1076). Edinburgh: Institute of Acoustics.
21.
Ingham, R.J., and Andrews, G. (1971). Stuttering: The quality of fluency after treatment. Journal of Communication Disorders, 4, 278–288.
22.
Kerrison, P.D. (1918). The test for malingering in defective hearing. Laryngoscope, 28, 662–665.
23.
Ladefoged, P. (1967). Three Areas of Experimental Phonetics.London: Oxford University Press.
24.
Lane, H.L., and Tranel, B. (1971). The Lombard sign and the role of hearing in speech. Journal of Speech and Hearing Research, 14, 677–709.
25.
Lane, H., Tranel, B., and Sisson, C. (1970). Regulation of voice communication by sensory dynamics. Journal of the Acoustical Society of America, 47, 618–624.
26.
Lee, B.S. (1950). Effects of delayed speech feedback. Journal of the Acoustical Society of America, 22, 824–826.
27.
Lee, B.S. (1951). Artificial stutter. Journal of Speech and Hearing Disorders, 15, 53–55.
28.
Lehiste, I., and Peterson, G.E. (1959). Linguistic considerations in the study of speech intelligibility. Journal of the Acoustical Scoiety of America, 31, 280–286.
29.
Leith, W.R., and Chmiel, C.C. (1980). Delayed auditory feedback and stuttering: Theoretical and clinical implications. In N.J. Lass (ed.), Speech and Language: Advances in Basic Research and Practice, Vol. 3 (pp. 243–281). New York: Academic Press.
30.
Lombard, E. (1911). Le signe de l'elevation de la voix. Annales des maladies de l'oreille du larynx, du nez et du pharynx, 37, 101–119.
31.
Lotzmann, G. (1961). On the use of varied delay times in stammerers. Folia Phoniatrica, 17, 276–310.
32.
Novak, A. (1978). The influence of delayed auditory feedback in stutterers. Folia Phoniatrica, 30, 278–285.
33.
Shearer, W.M. (1966). Speech behavior of middle ear muscles during stuttering. Science, 152, 1280.
34.
Teig, E. (1973). Differential effect of graded contraction of middle ear muscles on the sound transmission of the ear. Acta Physiologica Scandinavica, 88, 387–391.
35.
Van Riper, C. (1982). The Nature of Stuttering (2nd ed.). Englewood Cliffs, NJ: Prentice-Hall.
36.
Webster, R.L., and Lubker, B. (1968). Interrelationships among fluency-producing variables in stuttered speech. Journal of Speech and Hearing Research, 11, 754–766.
37.
Wingate, M.E. (1988). The Structure of Stuttering.New York: Springer-Verlag.
