Perceptual vowel space for Australian English lax vowels: 1988 and 2004

Robert Mannell

Perceptual vowel space for Australian English lax vowels: 1988 and 2004

Robert Mannell

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

This paper examines changes in the perception of Australian English lax vowels between 1988 and 2004. In each of the years 1988 and 2004, 20 phonetically-trained native speakers of Australian English were presented with 224 different randomised, synthesised hVd tokens. The vowels differed according to their F1 and F2 values (all possible multiples of 100 Hz within a designated "male" vowel space). Half the vowels were "long" vowels (300 ms) and the other half were "short" vowels (150 ms). Subjects were given a forced-choice closed set task. They were told to concentrate on the vowel in each token and to label it with the symbol for the closest Australian English vowel phoneme. The responses for the "short" vowel plane were then plotted on a vowel perceptual contour map in F1/F2 formant space. Visual examination of the two resulting maps revealed apparent changes in the perceptual boundaries between all adjacent pairs of lax vowels. χ² analysis of 1988 versus 2004 responses for each vowel at each data point on the vowel space revealed significant changes in perceptual patterns at the perceptual boundaries between four pairs of adjacent vowels (/ɪ/ and /e/, /e/ and /æ/, /æ/ and /ʌ/, /ɒ/ and /ʊ/). Both an independent samples t-test and a MANOVA test examined the pattern of subject response means for each vowel and showed a significant change in the mean response between 1988 and 2004 for /æ/, /ʌ/ and /ɒ/.

Original language	English
Title of host publication	Proceedings of the 10th Australian international conference on speech science and technology
Editors	Steve Cassidy, Felicity Cox, Rober Mannell, Sallyanne Palethorpe
Place of Publication	Canberra
Publisher	Australian Speech Science and Technology Association
Pages	221-226
Number of pages	6
ISBN (Print)	0958194610
Publication status	Published - 2004
Event	Australian International Conference on Speech Science and Technology (10th : 2004) - Sydney Duration: 8 Dec 2004 → 10 Dec 2004

Conference

Conference	Australian International Conference on Speech Science and Technology (10th : 2004)
City	Sydney
Period	8/12/04 → 10/12/04

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Mannell, R. (2004). Perceptual vowel space for Australian English lax vowels: 1988 and 2004. In S. Cassidy, F. Cox, R. Mannell, & S. Palethorpe (Eds.), Proceedings of the 10th Australian international conference on speech science and technology (pp. 221-226). Australian Speech Science and Technology Association. http://www.assta.org/sst/2004/proceedings/papers/sst2004-293.pdf

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title = "Perceptual vowel space for Australian English lax vowels: 1988 and 2004",

abstract = "This paper examines changes in the perception of Australian English lax vowels between 1988 and 2004. In each of the years 1988 and 2004, 20 phonetically-trained native speakers of Australian English were presented with 224 different randomised, synthesised hVd tokens. The vowels differed according to their F1 and F2 values (all possible multiples of 100 Hz within a designated {"}male{"} vowel space). Half the vowels were {"}long{"} vowels (300 ms) and the other half were {"}short{"} vowels (150 ms). Subjects were given a forced-choice closed set task. They were told to concentrate on the vowel in each token and to label it with the symbol for the closest Australian English vowel phoneme. The responses for the {"}short{"} vowel plane were then plotted on a vowel perceptual contour map in F1/F2 formant space. Visual examination of the two resulting maps revealed apparent changes in the perceptual boundaries between all adjacent pairs of lax vowels. χ² analysis of 1988 versus 2004 responses for each vowel at each data point on the vowel space revealed significant changes in perceptual patterns at the perceptual boundaries between four pairs of adjacent vowels (/ɪ/ and /e/, /e/ and /{\ae}/, /{\ae}/ and /ʌ/, /ɒ/ and /ʊ/). Both an independent samples t-test and a MANOVA test examined the pattern of subject response means for each vowel and showed a significant change in the mean response between 1988 and 2004 for /{\ae}/, /ʌ/ and /ɒ/.",

author = "Robert Mannell",

year = "2004",

language = "English",

isbn = "0958194610",

pages = "221--226",

editor = "Steve Cassidy and Felicity Cox and Rober Mannell and Sallyanne Palethorpe",

booktitle = "Proceedings of the 10th Australian international conference on speech science and technology",

publisher = "Australian Speech Science and Technology Association",

note = "Australian International Conference on Speech Science and Technology (10th : 2004) ; Conference date: 08-12-2004 Through 10-12-2004",

}

Mannell, R 2004, Perceptual vowel space for Australian English lax vowels: 1988 and 2004. in S Cassidy, F Cox, R Mannell & S Palethorpe (eds), Proceedings of the 10th Australian international conference on speech science and technology. Australian Speech Science and Technology Association, Canberra, pp. 221-226, Australian International Conference on Speech Science and Technology (10th : 2004), Sydney, 8/12/04. <http://www.assta.org/sst/2004/proceedings/papers/sst2004-293.pdf>

Perceptual vowel space for Australian English lax vowels : 1988 and 2004. / Mannell, Robert.

Proceedings of the 10th Australian international conference on speech science and technology. ed. / Steve Cassidy; Felicity Cox; Rober Mannell; Sallyanne Palethorpe. Canberra : Australian Speech Science and Technology Association, 2004. p. 221-226.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Perceptual vowel space for Australian English lax vowels

T2 - Australian International Conference on Speech Science and Technology (10th : 2004)

AU - Mannell, Robert

PY - 2004

Y1 - 2004

N2 - This paper examines changes in the perception of Australian English lax vowels between 1988 and 2004. In each of the years 1988 and 2004, 20 phonetically-trained native speakers of Australian English were presented with 224 different randomised, synthesised hVd tokens. The vowels differed according to their F1 and F2 values (all possible multiples of 100 Hz within a designated "male" vowel space). Half the vowels were "long" vowels (300 ms) and the other half were "short" vowels (150 ms). Subjects were given a forced-choice closed set task. They were told to concentrate on the vowel in each token and to label it with the symbol for the closest Australian English vowel phoneme. The responses for the "short" vowel plane were then plotted on a vowel perceptual contour map in F1/F2 formant space. Visual examination of the two resulting maps revealed apparent changes in the perceptual boundaries between all adjacent pairs of lax vowels. χ² analysis of 1988 versus 2004 responses for each vowel at each data point on the vowel space revealed significant changes in perceptual patterns at the perceptual boundaries between four pairs of adjacent vowels (/ɪ/ and /e/, /e/ and /æ/, /æ/ and /ʌ/, /ɒ/ and /ʊ/). Both an independent samples t-test and a MANOVA test examined the pattern of subject response means for each vowel and showed a significant change in the mean response between 1988 and 2004 for /æ/, /ʌ/ and /ɒ/.

AB - This paper examines changes in the perception of Australian English lax vowels between 1988 and 2004. In each of the years 1988 and 2004, 20 phonetically-trained native speakers of Australian English were presented with 224 different randomised, synthesised hVd tokens. The vowels differed according to their F1 and F2 values (all possible multiples of 100 Hz within a designated "male" vowel space). Half the vowels were "long" vowels (300 ms) and the other half were "short" vowels (150 ms). Subjects were given a forced-choice closed set task. They were told to concentrate on the vowel in each token and to label it with the symbol for the closest Australian English vowel phoneme. The responses for the "short" vowel plane were then plotted on a vowel perceptual contour map in F1/F2 formant space. Visual examination of the two resulting maps revealed apparent changes in the perceptual boundaries between all adjacent pairs of lax vowels. χ² analysis of 1988 versus 2004 responses for each vowel at each data point on the vowel space revealed significant changes in perceptual patterns at the perceptual boundaries between four pairs of adjacent vowels (/ɪ/ and /e/, /e/ and /æ/, /æ/ and /ʌ/, /ɒ/ and /ʊ/). Both an independent samples t-test and a MANOVA test examined the pattern of subject response means for each vowel and showed a significant change in the mean response between 1988 and 2004 for /æ/, /ʌ/ and /ɒ/.

M3 - Conference proceeding contribution

SN - 0958194610

SP - 221

EP - 226

BT - Proceedings of the 10th Australian international conference on speech science and technology

A2 - Cassidy, Steve

A2 - Cox, Felicity

A2 - Mannell, Rober

A2 - Palethorpe, Sallyanne

PB - Australian Speech Science and Technology Association

CY - Canberra

Y2 - 8 December 2004 through 10 December 2004

ER -

Perceptual vowel space for Australian English lax vowels: 1988 and 2004

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