Displaying 1 - 11 of 11
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Levelt, W. J. M., & Flores d'Arcais, G. B. (1975). Some psychologists' reactions to the Symposium of Dynamic Aspects of Speech Perception. In A. Cohen, & S. Nooteboom (
Eds. ), Structure and process in speech perception (pp. 345-351). Berlin: Springer. -
Levelt, W. J. M. (1975). Systems, skills and language learning. In A. Van Essen, & J. Menting (
Eds. ), The context of foreign language learning (pp. 83-99). Assen: Van Gorcum. -
Levelt, W. J. M., & Kempen, G. (1975). Semantic and syntactic aspects of remembering sentences: A review of some recent continental research. In A. Kennedy, & W. Wilkes (
Eds. ), Studies in long term memory (pp. 201-216). New York: Wiley. -
Levelt, W. J. M. (1975). What became of LAD? [Essay]. Lisse: Peter de Ridder Press.
Abstract
PdR Press publications in cognition ; 1 -
Levelt, W. J. M., Riemersma, J. B., & Bunt, A. A. (1972). Binaural additivity of loudness. British Journal of Mathematical & Statistical Psychology, 25, 51-68.
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Levelt, W. J. M. (1972). [Review of the book Psychometric methods in the study of meaning]. Contemporary Psychology, 17, 586-587.
Abstract
Review of S. Fillenbaum and A. Rapoport, Structures in the subjective lexicon -
Levelt, W. J. M. (1972). Hans Hörmann, Psycholinguistics: An introduction to research and theory [Book review]. Nijmeegs tijdschrift voor psychologie, 20(3), 168-169.
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Levelt, W. J. M. (1972). Some psychological aspects of linguistic data. Linguistische Berichte, 17, 18-30.
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Levelt, W. J. M. (1965). Binocular brightness averaging and contour information. British Journal of Psychology, 56, 1-13.
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Levelt, W. J. M. (1965). On binocular rivalry. PhD Thesis, Van Gorcum, Assen.
Abstract
PHD thesis, defended at the University of Leiden -
Plomp, R., & Levelt, W. J. M. (1965). Tonal consonance and critical bandwidth. Journal of the Acoustical Society of America, 38, 548-560. doi:10.1121/1.1909741.
Abstract
Firstly, theories are reviewed on the explanation of tonal consonance as the singular nature of tone intervals with frequency ratios corresponding with small integer numbers. An evaluation of these explanations in the light of some experimental studies supports the hypothesis, as promoted by von Helmholtz, that the difference between consonant and dissonant intervals is related to beats of adjacent partials. This relation was studied more fully by experiments in which subjects had to judge simple-tone intervals as a function of test frequency and interval width. The results may be considered as a modification of von Helmholtz's conception and indicate that, as a function of frequency, the transition range between consonant and dissonant intervals is related to critical bandwidth. Simple-tone intervals are evaluated as consonant for frequency differences exceeding this bandwidth. whereas the most dissonant intervals correspond with frequency differences of about a quarter of this bandwidth. On the base of these results, some properties of consonant intervals consisting of complex tones are explained. To answer the question whether critical bandwidth also plays a rôle in music, the chords of two compositions (parts of a trio sonata of J. S. Bach and of a string quartet of A. Dvorák) were analyzed by computing interval distributions as a function of frequency and number of harmonics taken into account. The results strongly suggest that, indeed, critical bandwidth plays an important rôle in music: for a number of harmonics representative for musical instruments, the "density" of simultaneous partials alters as a function of frequency in the same way as critical bandwidth does.
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