Results 181 to 190 of about 6,241 (213)

Formant frequency development: 15 to 36 months

Journal of Voice, 1997
Developmental characteristics of formant 1 (F1) and formant 2 (F2) are reported for spontaneous vocalizations produced by four young children. Each child was systematically sampled at between 15 and 36 months of age. Results indicated that both F1 and F2 remained relatively unchanged prior to 24 months of age. Significant decreases in average F1 and F2
H R, Gilbert, M P, Robb, Y, Chen
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Formant-Frequency Variation and Its Effects on Across-Formant Grouping in Speech Perception

2013
How speech is separated perceptually from other speech remains poorly understood. In a series of experiments, perceptual organisation was probed by presenting three-formant (F1+F2+F3) analogues of target sentences dichotically, together with a competitor for F2 (F2C), or for F2+F3, which listeners must reject to optimise recognition.
Brian, Roberts, Robert J, Summers, Peter J, Bailey   +2 more
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Frequency Detection and Speech Formants

The Journal of the Acoustical Society of America, 1951
This study is aimed primarily at evaluating the utility of axis-crossing detectors in tracking speech formants. Detectors of the usual type are found subject to an error, fundamental in nature. To remove this source of error speech is modulated up in frequency as a single sideband before limiting and detecting processes are applied.
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Discrimination of Formant Frequency Transitions in Synthetic Vowels

Journal of Speech and Hearing Research, 1973
Discrimination of second-formant (F 2 ) transitions in synthetic vowels was measured with and without the first formant (F 1 ) present, with and without a transition in F 1 , and with F 1 at various amplitudes relative to F 2
E M, Danaher, M J, Osberger, J M, Pickett   +2 more
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FORMANT FREQUENCIES OF LONG AND SHORT DANISH VOWELS

Annual Report of the Institute of Phonetics University of Copenhagen, 1972
No ...
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On the Separation and Measurement of Formant Frequencies

The Journal of the Acoustical Society of America, 1956
A method of separating and measuring formant frequencies is described. The procedure is based on various weightings of the short-time power spectrum of the speech wave to be analyzed [Chang et al. Proc. Inst. Radio Engrs. 39, 147 (1951)]. The performance under a variety of disturbances such as noise, spurious pulses, and low-frequency distortions is ...
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Modeling formant frequency discrimination of female vowels

The Journal of the Acoustical Society of America, 1996
The present investigations were designed to establish the features of vowel spectra that mediate formant frequency discrimination. Thresholds for detecting frequency shifts in the first and second formants of two steady-state vowels were initially measured for conditions in which the amplitudes of all harmonics varied in accordance with a model of ...
M S, Sommers, D, Kewley-Port
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Changes in Formant Frequencies and Formant Levels at High Voice Effort

Annual Report of the Institute of Phonetics University of Copenhagen, 1967
No ...
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Frequency discrimination of a single formant

IPO Annual Progress Report, 1967
No abstract.
Ritsma, R.J., Domburg, G., Donders, J.J.H.   +2 more
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Formant frequency patterns in Russian VCV utterances

The Journal of the Acoustical Society of America, 1979
Previous studies have sought to establish the significance of various parameters in the determination of the patternings of Russian formant frequency trajectories in vowel-consonant-vowel (VCV) syllables. In the present study, 9600 measurements of first and second formant frequency were made on Russian VCV nonsense words.
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