Erratum : "Melodic accent : Experiments and a tentative model" [ J. Acoust. Soc. Am. 71, 1596-1605(1982)]

Erratum : "Melodic accent : Experiments and a tentative

model" [ J. Acoust. Soc. Am. 71, 1596-1605(1982)]

Citation for published version (APA):

Thomassen, J. M. (1982). Erratum : "Melodic accent : Experiments and a tentative model" [ J. Acoust. Soc. Am. 71, 1596-1605(1982)]. Journal of the Acoustical Society of America, 73(1), 373. https://doi.org/10.1121/1.389590

DOI:

10.1121/1.389590

Document status and date: Published: 01/01/1982 Document Version:

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Erratum: "Melodic accent: Experiments and a tentative model"

[J. Acoust. Soc. Am. 71, 1596-1605 (1982)]

Joseph M. Thomassen

Institute for Perception Research, P.O. Box. 513, 5600 MB Eindhoven, The Netherlands

(Received 25 August 1982; accepted for publication 8 October 1982}

PACS numbers: 43.75.B½, 43.66.Mk, 43.10.Vx

The theoretical scale values (and consequently the cor-

relation coefficients} in Fig. 6 of the subject paper do not

correspond to the model as described in the paper (to be

denoted as version B} but pertain to an earlier version of the

model (A}. The theoretical values given in Fig. 6 yield a cor-

relation coefficient _r = 0.90 {N = 48) instead Of _r ---- 0.76 as

indicated in the text. Figure 6 has to be replaced by the figure

given in this erratum, which contains the same experimental

scale values together with the correct theoretical values. The

present model B involves one degree of freedom less than the

first version A and was preferred despite its lower correla-

tion between predictions and experimental outcomes.

In version B, relative probabilities to be perceived as an

accent are assigned to second and third tones contained in

the window; the product of the probability values allocated

to a tone in two successive window positions is considered to

be a measure of its accent strength. In version A, normalized

accent strengths were distributed over the three tones con-

tained within the window; the strengths assigned to a certain

tone for three successive positions of the window were sim-

ply added and the sums were divided by a constant in order

to obtain final values between 0 and 1. When no change of

frequency level occurred in the window all tones were allot-

ted equal strengths; in the case of a single change the first

tone at different level got all points; for two successive

changes of frequency level the strengths were derived from

the experimental data and correspond to the probability val-

ues of version B, given in Table I, p. 1602.

o r...92 r...93 1 o r: .8o r: .28 - r= .99 r...66 1.00

t-:-.

FIG. 6. The accent strengths for the tones of 12 motifs. Each motif is repre-

sented by the succession of frequency level changes. The correlation coeffi-

cient •r shows the agreement between theoretical and experimental scale val-

ues, connected respectively by solid or dashed lines. The standard deviation

(six subjects) is indicated by vertical bars.

373 J. Acoust. Soc. Am. 73(1), Jan. 1983; ¸ 1983 Acoust. Soc. Am.- Letters to the Editor 373