An addendum to "Effects of Noise on Speech Production: Acoustic and Perceptual Analyses" [J. Acoust. Soc. Am. 84, 917-928 (1988)].

The authors respond to Fitch's comments [H. Fitch, J. Acoust. Soc. Am. 86, 2017-2019 (1989)] on an earlier paper. New analyses are presented to address the question of whether F1 differences observed in the original report are an artifact of linear predictive coding (LPC) analysis techniques. Contrary to Fitch's claims, the results suggest that the F1 differences originally reported are, in fact, due to changes in vocal tract resonance characteristics. It is concluded that there are important acoustic-phonetic differences in speech when talkers speak in noise. These differences reflect changes in both glottal and supraglottal events that are designed to maintain speech intelligibility under adverse conditions.

[1]  R. H. Bernacki,et al.  Effects of noise on speech production: acoustic and perceptual analyses. , 1988, The Journal of the Acoustical Society of America.

[2]  H. Fujisaki,et al.  The roles of pitch and higher formants in the perception of vowels , 1968 .

[3]  J. Hansen,et al.  Estimation and comparison of the glottal source waveform across stress styles using glottal inverse filtering , 1989, Proceedings. IEEE Energy and Information Technologies in the Southeast'.

[4]  H. Traunmüller.  Perceptual dimension of openness in vowels. , 1981, The Journal of the Acoustical Society of America.

[5]  Gunnar Fant,et al.  Acoustic analysis and synthesis of speech with applications to Swedish , 1959 .

[6]  Gunnar Fant,et al.  Acoustic Theory Of Speech Production , 1960 .

[7]  A. Slawson.  Vowel quality and musical timbre as functions of spectrum envelope and fundamental frequency. , 1968, The Journal of the Acoustical Society of America.

[8]  J. Makhoul,et al.  Linear Prediction and the Spectral Analysis of Speech , 1972 .

[9]  Francine R. Chen,et al.  Acoustic characteristics and intelligibility of clear and conversational speech at the segmental level , 1980 .

[10]  P F Assmann,et al.  Perception of front vowels: the role of harmonics in the first formant region. , 1987, The Journal of the Acoustical Society of America.

[11]  H Fitch.  Comments on "Effects of Noise on Speech Production: Acoustic and Perceptual Analyses" [J. Acoust. Soc. Am. 84, 917-928 (1988)]. , 1989, The Journal of the Acoustical Society of America.

[12]  M. Picheny,et al.  Speaking clearly for the hard of hearing. II: Acoustic characteristics of clear and conversational speech. , 1986, Journal of speech and hearing research.

[13]  B. J. Stanton,et al.  Robust recognition of loud and Lombard speech in the fighter cockpit environment , 1989, International Conference on Acoustics, Speech, and Signal Processing,.

[14]  C. J. Darwin,et al.  Which harmonics contribute to the estimation of first formant frequency? , 1985, Speech Commun..

[15]  H. Lane,et al.  The Lombard Sign and the Role of Hearing in Speech , 1971 .

[16]  R. Miller.  Auditory Tests with Synthetic Vowels , 1951 .

[17]  G. Fant,et al.  Two-formant Models, Pitch and Vowel Perception , 1975 .

[18]  L. A. Chistovich.  Central auditory processing of peripheral vowel spectra. , 1985, The Journal of the Acoustical Society of America.