Displaying publications 1 - 20 of 35 in total

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  1. Kaland C, Kluge A, van Heuven VJ
    Phonetica, 2021 04 27;78(2):141-168.
    PMID: 33892529 DOI: 10.1515/phon-2021-2003
    The existence of word stress in Indonesian languages has been controversial. Recent acoustic analyses of Papuan Malay suggest that this language has word stress, counter to other studies and unlike closely related languages. The current study further investigates Papuan Malay by means of lexical (non-acoustic) analyses of two different aspects of word stress. In particular, this paper reports two distribution analyses of a word corpus, 1) investigating the extent to which stress patterns may help word recognition and 2) exploring the phonological factors that predict the distribution of stress patterns. The facilitating role of stress patterns in word recognition was investigated in a lexical analysis of word embeddings. The results show that Papuan Malay word stress (potentially) helps to disambiguate words. As for stress predictors, a random forest analysis investigated the effect of multiple morpho-phonological factors on stress placement. It was found that the mid vowels /ɛ/ and /ɔ/ play a central role in stress placement, refining the conclusions of previous work that mainly focused on /ɛ/. The current study confirms that non-acoustic research on stress can complement acoustic research in important ways. Crucially, the combined findings on stress in Papuan Malay so far give rise to an integrated perspective to word stress, in which phonetic, phonological and cognitive factors are considered.
    Matched MeSH terms: Phonetics*
  2. Muthusamy H, Polat K, Yaacob S
    PLoS One, 2015;10(3):e0120344.
    PMID: 25799141 DOI: 10.1371/journal.pone.0120344
    In the recent years, many research works have been published using speech related features for speech emotion recognition, however, recent studies show that there is a strong correlation between emotional states and glottal features. In this work, Mel-frequency cepstralcoefficients (MFCCs), linear predictive cepstral coefficients (LPCCs), perceptual linear predictive (PLP) features, gammatone filter outputs, timbral texture features, stationary wavelet transform based timbral texture features and relative wavelet packet energy and entropy features were extracted from the emotional speech (ES) signals and its glottal waveforms(GW). Particle swarm optimization based clustering (PSOC) and wrapper based particle swarm optimization (WPSO) were proposed to enhance the discerning ability of the features and to select the discriminating features respectively. Three different emotional speech databases were utilized to gauge the proposed method. Extreme learning machine (ELM) was employed to classify the different types of emotions. Different experiments were conducted and the results show that the proposed method significantly improves the speech emotion recognition performance compared to previous works published in the literature.
    Matched MeSH terms: Phonetics*
  3. Lim A, O'Brien B, Onnis L
    Behav Res Methods, 2024 Mar;56(3):1283-1313.
    PMID: 37553536 DOI: 10.3758/s13428-023-02094-5
    Research on orthographic consistency in English words has selectively identified different sub-syllabic units in isolation (grapheme, onset, vowel, coda, rime), yet there is no comprehensive assessment of how these measures affect word identification when taken together. To study which aspects of consistency are more psychologically relevant, we investigated their independent and composite effects on human reading behavior using large-scale databases. Study 1 found effects on adults' naming responses of both feedforward consistency (orthography to phonology) and feedback consistency (phonology to orthography). Study 2 found feedback but no feedforward consistency effects on visual and auditory lexical decision tasks, with the best predictor being a composite measure of consistency across grapheme, rime, OVC, and word-initial letter-phoneme. In Study 3, we explicitly modeled the reading process with forward and backward flow in a bidirectionally connected neural network. The model captured latent dimensions of quasi-regular mapping that explain additional variance in human reading and spelling behavior, compared to the established measures. Together, the results suggest interactive activation between phonological and orthographic word representations. They also validate the role of computational analyses of language to better understand how print maps to sound, and what properties of natural language affect reading complexity.
    Matched MeSH terms: Phonetics*
  4. Mukari SZ, Said H
    Med J Malaysia, 1991 Sep;46(3):262-8.
    PMID: 1839923
    Speech audiometry is a method for assessing the ability of the auditory system using speech sounds as stimuli. A list of phonemically balanced bisyllabic consonant-vowel-consonant-vowel (c-v-c-v) Malay words was produced. All the bisyllabic words (c-v-c-v) thought to be commonly used in everyday conversations were listed from the Dewan Bahasa dictionary and their suitability assessed. The chosen words were divided into 25 groups containing 10 words each. The list was then recorded by a professional male newscaster in a sound proof studio. A normal speech audiometry curve was obtained by testing 60 normal hearing subjects using the prerecorded speech material. The result of the study showed that the normal Malay speech audiometry curve was comparable to those of English and Arabic speech audiometry, in which it was sigmoidal with the optimum discrimination score of 40 dB and half peak level of 17.5 dB.
    Matched MeSH terms: Phonetics
  5. Ye Q, Gao Y, Patel RJ, Cao B, Li A, Powell J, et al.
    Science, 2024 Apr 05;384(6691):26-28.
    PMID: 38574143 DOI: 10.1126/science.adp2180
    Matched MeSH terms: Phonetics
  6. Ting HN, Chia SY, Abdul Hamid B, Mukari SZ
    J Voice, 2011 Nov;25(6):e305-9.
    PMID: 21429707 DOI: 10.1016/j.jvoice.2010.05.007
    The acoustic characteristics of sustained vowel have been widely investigated across various languages and ethnic groups. These acoustic measures, including fundamental frequency (F(0)), jitter (Jitt), relative average perturbation (RAP), five-point period perturbation quotient (PPQ5), shimmer (Shim), and 11-point amplitude perturbation quotient (APQ11) are not well established for Malaysian Malay young adults. This article studies the acoustic measures of Malaysian Malay adults using acoustical analysis. The study analyzed six sustained Malay vowels of 60 normal native Malaysian Malay adults with a mean of 21.19 years. The F(0) values of Malaysian Malay males and females were reported as 134.85±18.54 and 238.27±24.06Hz, respectively. Malaysian Malay females had significantly higher F(0) than that of males for all the vowels. However, no significant differences were observed between the genders for the perturbation measures in all the vowels, except RAP in /e/. No significant F(0) differences between the vowels were observed. Significant differences between the vowels were reported for all perturbation measures in Malaysian Malay males. As for Malaysian Malay females, significant differences between the vowels were reported for Shim and APQ11. Multiethnic comparisons indicate that F(0) varies between Malaysian Malay and other ethnic groups. However, the perturbation measures cannot be directly compared, where the measures vary significantly across different speech analysis softwares.
    Matched MeSH terms: Phonetics*
  7. Lim HW, Wells B, Howard S
    Clin Linguist Phon, 2015;29(11):793-811.
    PMID: 26237032
    Early child multilingual acquisition is under-explored. Using a cross-sectional study approach, the present research investigates the rate of multilingual phonological acquisition of English-Mandarin-Malay by 64 ethnic Chinese children aged 2;06-4;05 in Malaysia--a multiracial-multilingual country of Asia. The aims of the study are to provide clinical norms for speech development in the multilingual children and to compare multilingual acquisition with monolingual and bilingual acquisition. An innovative multilingual phonological test which adopts well-defined scoring criteria drawing upon local accents of English, Mandarin and Malay is proposed and described in this article. This procedure has been neglected in the few existing Chinese bilingual phonological acquisition studies resulting in peculiar findings. The multilingual children show comparable phonological acquisition milestones to that of monolingual and bilingual peers acquiring the same languages. The implications of the present results are discussed. The present findings contribute to the development of models and theories of child multilingual acquisition.
    Matched MeSH terms: Phonetics*
  8. Ibrahim HM, Reilly S, Kilpatrick N
    Cleft Palate Craniofac J, 2012 Sep;49(5):e61-3.
    PMID: 21787239 DOI: 10.1597/11-001
    To establish normative nasalance scores for a set of newly developed stimuli in Malay.
    Matched MeSH terms: Phonetics*
  9. Ting HN, Chia SY, Kim KS, Sim SL, Abdul Hamid B
    J Voice, 2011 Nov;25(6):e311-7.
    PMID: 21376529 DOI: 10.1016/j.jvoice.2010.05.004
    The acoustic properties of vowel phonation vary across cultures. These specific characteristics, including vowel fundamental frequency (F(0)) and perturbation measures (Absolute Jitter [Jita], Jitter [Jitt], Relative Average Perturbation [RAP], five-point Period Perturbation Quotient [PPQ5], Absolute Shimmer [ShdB], Shimmer [Shim], and 11-point Amplitude Perturbation Quotient [APQ11]) are not well established for Malaysian Chinese adults. This article investigates the F(0) and perturbation measurements of sustained vowels in 60 normal Malaysian Chinese adults using acoustical analysis. Malaysian Chinese females had significantly higher F(0) than Malaysian males in all six vowels. However, there were no significant differences in F(0) across the vowels for each gender. Significant differences between vowels were observed for Jita, Jitt, PPQ5, ShdB, Shim, and APQ11 among Chinese males, whereas significant differences between vowels were observed for all the perturbation parameters among Chinese females. Chinese males had significantly higher Jita and APQ11 in the vowels than Chinese females, whereas no significant differences were observed between males and females for Jitt, RAP, PPQ5, and Shim. Cross-ethnic comparisons indicate that F(0) of vowel phonation varies within the Chinese ethnic group and across other ethnic groups. The perturbation measures cannot be simply compared, where the measures may vary significantly across different speech analysis softwares.
    Matched MeSH terms: Phonetics*
  10. Billings CJ, Grush LD, Maamor N
    Physiol Rep, 2017 Nov;5(20).
    PMID: 29051305 DOI: 10.14814/phy2.13464
    The effects of background noise on speech-evoked cortical auditory evoked potentials (CAEPs) can provide insight into the physiology of the auditory system. The purpose of this study was to determine background noise effects on neural coding of different phonemes within a syllable. CAEPs were recorded from 15 young normal-hearing adults in response to speech signals /s/, /ɑ/, and /sɑ/. Signals were presented at varying signal-to-noise ratios (SNRs). The effects of SNR and context (in isolation or within syllable) were analyzed for both phonemes. For all three stimuli, latencies generally decreased and amplitudes generally increased as SNR improved, and context effects were not present; however, the amplitude of the /ɑ/ response was the exception, showing no SNR effect and a significant context effect. Differential coding of /s/ and /ɑ/ likely result from level and timing differences. Neural refractoriness may result in the lack of a robust SNR effect on amplitude in the syllable context. The stable amplitude across SNRs in response to the vowel in /sɑ/ suggests the combined effects of (1) acoustic characteristics of the syllable and noise at poor SNRs and (2) refractory effects resulting from phoneme timing at good SNRs. Results provide insights into the coding of multiple-onset speech syllables in varying levels of background noise and, together with behavioral measures, may help to improve our understanding of speech-perception-in-noise difficulties.
    Matched MeSH terms: Phonetics*
  11. Mohd Ibrahim H, Lim HW, Ahmad Rusli Y, Lim CT
    Clin Linguist Phon, 2020 06 02;34(6):554-565.
    PMID: 31537131 DOI: 10.1080/02699206.2019.1668480
    This study was designed to develop language-specific stimuli for the assessment of resonance and to obtain nasalance scores using the newly developed speech stimuli in Mandarin. Gender and age influences on nasalance scores for each of the stimulus were also examined. Participants recruited were typically developing Mandarin-speaking ethnic Chinese children aged 6;00-7;11 growing up in Malaysia. Perceptual ratings of nasality were made based on the GOS.SP.ASS.'98 (revised) for children while nasalance scores were recorded for each stimulus using the Nasometer II (Model 6400). Fifty Mandarin-speaking children (24 males and 26 females) were recruited. None of the participants were perceived with abnormal nasality on the three stimuli. The mean nasalance scores for the Mandarin stimuli were 16.08% (SD = 2.57, 95% CI = 15.35-16.81) for the Oral passage, 25.20% (SD = 3.63, 95% CI = 24.17-26.23) for the Oral-Nasal passage and 55.44% (SD = 4.17, 95% CI = 54.25-56.63) for the Nasal passage. No significant age- and gender-related differences were observed for all the three stimuli. This is the first set of Mandarin stimuli and nasalance norms for Mandarin-speaking children in Malaysia. The influence of phonetic content on nasalance is supported. Findings call for language-specific normative nasalance data and careful selection of stimuli for the assessment of resonance.
    Matched MeSH terms: Phonetics*
  12. Lim HW
    Clin Linguist Phon, 2018;32(10):889-912.
    PMID: 29993293 DOI: 10.1080/02699206.2018.1459852
    Child multilingual phonological errors are under-explored. Cross-linguistic studies suggest monolingual children make phonological errors that are subject to effects of language universality and ambient language characteristics. Bilingual Chinese children were observed to use not only typical, but also atypical phonological errors compared to monolingual peers acquiring similar languages. Atypical errors are a result of specific bilingual pair effects. Close-language-relatedness (Cantonese-Mandarin) is claimed to be responsible for the nonexistence of atypical errors in both languages, whilst distant-language-relatedness (Cantonese-English) is observed to cause atypical errors in both languages. The present novel cross-sectional study investigated phonological acquisition in three typologically distant languages: English-Mandarin-Malay by 64 multilingual Chinese children aged 2½-4½. The present research aimed to explore if multilingual Chinese children exhibit phonological errors which commensurate to that of monolingual and bilingual Chinese children acquiring similar languages as described in the literature. The single-word phonological test results revealed that the multilinguals exhibited typical and atypical phonological patterns which largely commensurate with the monolinguals and bilinguals. Similar to bilingual children, the multilingual children showed more atypical errors in English than in Mandarin, demonstrating effects of individual language irrespective of potential interaction with additional languages. The present result did not fully support the link between closeness in typology of languages and the absence of atypical errors. Rare atypical errors were found in Mandarin and Malay, two typologically different languages, and both were also interacting with English, another typologically different language. The present findings provided useful preliminary multilingual speech norms for the use of speech therapists.
    Matched MeSH terms: Phonetics*
  13. Chong FY, Jenstad LM
    Med J Malaysia, 2018 12;73(6):365-370.
    PMID: 30647205
    INTRODUCTION: Modulation-based noise reduction (MBNR) is one of the common noise reduction methods used in hearing aids. Gain reduction in high frequency bands may occur for some implementations of MBNR and fricatives might be susceptible to alteration, given the high frequency components in fricative noise. The main objective of this study is to quantify the acoustic effect of MBNR on /s, z/.

    METHODS: Speech-and-noise signals were presented to, and recorded from, six hearing aids mounted on a head and torso simulator. Test stimuli were nonsense words mixed with pink, cafeteria, or speech-modulated noise at 0 dB SNR. Fricatives /s, z/ were extracted from the recordings for analysis.

    RESULTS: Analysis of the noise confirmed that MBNR in all hearing aids was activated for the recordings. More than 1.0 dB of acoustic change occurred to /s, z/ when MBNR was turned on in four out of the six hearing aids in the pink and cafeteria noise conditions. The acoustics of /s, z/ by female talkers were affected more than male talkers. Significant relationships between amount of noise reduction and acoustic change of /s, z/ were found. Amount of noise reduction accounts for 42.8% and 16.8% of the variability in acoustic change for /s/ and /z/ respectively.

    CONCLUSION: Some clinically-available implementations of MBNR have measurable effects on the acoustics of fricatives. Possible implications for speech perception are discussed.

    Matched MeSH terms: Phonetics
  14. MARINA KAWI, DAYANG SARIAH ABANG SUHAI
    MyJurnal
    The study aims to identify an inventory of vowel phonemes of Melanau Rajang dialect in Belawai under the administration of Tanjung Manis District, Sarawak. This study is a field survey using interview methods to obtain data. A total 250 Swadesh list (Samarin, 1967) are used as a guide for data collection. In this study, two infotmants of different genders aged between 40 and 60 years old were selected based on criteria of informant selections according to Asmah Haji Omar (2001). In analysis data, qualitative method is used based on structural approaches. The findings show that there are eight (8) vowel phonemes have been identified; four (4) front vowels [i, e, ε, a]; one (1) central vowel [ə]; and three (3) back vowels [u, o, ɔ]. Besides that, the distribution/alternation of all vowel phonemes of Melanau Rajang dialect in Belawai are also discussed in this study. The findings also indicate that active vowel phonemes are vowels [a, i, u], while inactive vocal phonemes are vowels [ɔ, o, ε, ə, e].
    Matched MeSH terms: Phonetics
  15. Joseph, Pamela Thomas
    MyJurnal
    This preliminary study aims to provide an initial description of phonological acquisition among Malaysian Children of Indian descent aged two to six years. The description of the consonantal phonemic inventory as well as various Phonological processes evidenced by subjects is also reported. The mothers’ phonemic inventory was obtained as the representation of the children’s most active environmental linguistic input. Speech samples of the mothers as well as the subjects were obtained from a single word test and narrative test. The speech sample was recorded and transcribed using the International Phonetic Alphabet. The results of the tests revealed a significant correspondence between the subjects' phonemic inventory and their mothers’ except for the following phonemes: /ð/ , /θ/ , /v/ and /w/. Both mothers and subjects demonstrated free variation for the production of /v/ and /w/. The mothers displayed a range of 21-23 phonemes in their inventories whereas the subjects displayed a range of 17-21 phonemes. The age acquisition for some phonemes, namely the affricates which was evidenced by subject aged 2;4 were noted to be earlier than that of subjects in past studies. Rapid phonological development was evidenced at the age of 2;4- 3;7.
    Matched MeSH terms: Phonetics
  16. Kalashnikova M, Singh L, Tsui A, Altuntas E, Burnham D, Cannistraci R, et al.
    Dev Sci, 2024 May;27(3):e13459.
    PMID: 37987377 DOI: 10.1111/desc.13459
    We report the findings of a multi-language and multi-lab investigation of young infants' ability to discriminate lexical tones as a function of their native language, age and language experience, as well as of tone properties. Given the high prevalence of lexical tones across human languages, understanding lexical tone acquisition is fundamental for comprehensive theories of language learning. While there are some similarities between the developmental course of lexical tone perception and that of vowels and consonants, findings for lexical tones tend to vary greatly across different laboratories. To reconcile these differences and to assess the developmental trajectory of native and non-native perception of tone contrasts, this study employed a single experimental paradigm with the same two pairs of Cantonese tone contrasts (perceptually similar vs. distinct) across 13 laboratories in Asia-Pacific, Europe and North-America testing 5-, 10- and 17-month-old monolingual (tone, pitch-accent, non-tone) and bilingual (tone/non-tone, non-tone/non-tone) infants. Across the age range and language backgrounds, infants who were not exposed to Cantonese showed robust discrimination of the two non-native lexical tone contrasts. Contrary to this overall finding, the statistical model assessing native discrimination by Cantonese-learning infants failed to yield significant effects. These findings indicate that lexical tone sensitivity is maintained from 5 to 17 months in infants acquiring tone and non-tone languages, challenging the generalisability of the existing theoretical accounts of perceptual narrowing in the first months of life. RESEARCH HIGHLIGHTS: This is a multi-language and multi-lab investigation of young infants' ability to discriminate lexical tones. This study included data from 13 laboratories testing 5-, 10-, and 17-month-old monolingual (tone, pitch-accent, non-tone) and bilingual (tone/non-tone, non-tone/non-tone) infants. Overall, infants discriminated a perceptually similar and a distinct non-native tone contrast, although there was no evidence of a native tone-language advantage in discrimination. These results demonstrate maintenance of tone discrimination throughout development.
    Matched MeSH terms: Phonetics
  17. Turagam N, Mudrakola DP, Yelamanchi RS, Deepthi M, Natarajan M
    J Int Soc Prev Community Dent, 2019 02 14;9(1):94-98.
    PMID: 30923701 DOI: 10.4103/jispcd.JISPCD_220_18
    Denture esthetics as defined by Glossary of prosthodontics terms the effect produced by a dental prosthesis that affects the beauty and attractiveness of the person. [1] Removable partial dentures (RPDs) are the widely accepted and treatment of choice for most cases as it is both effective and affordable. Partially edentulous treatment planning includes both esthetics and masticatory function. A prosthesis that is highly esthetic will improve patient's motivation and acceptance. It is a very wrong notion to expect that patients will tolerate unesthetic partial dentures because good masticatory capability has been achieved. Esthetics plays a vital role in the success of partial dentures, and the length and mobility of the patient's lips play a significant role in achieving it. [2] Patients with short lips or highly mobile lips pose problems as esthetics are compromised because most clasp arms, denture borders, and other components will show when the patient smiles or speaks. [3] RPDs can easily look artificial; hence, special emphasis should aim toward restoring function, phonetics, esthetics with a long-term benefits which requires meticulous attention during fabrication. This case reports is an esthetic clasp designed for a cast partial denture for a young girl for esthetic and function.
    Matched MeSH terms: Phonetics
  18. Anis FN, Umat C, Ahmad K, Abdul Hamid B
    Cochlear Implants Int, 2022 Nov;23(6):347-357.
    PMID: 36005236 DOI: 10.1080/14670100.2022.2114583
    OBJECTIVE: This study aimed to compare the error patterns of Arabic phoneme-grapheme correspondence by a group of Malay children with cochlear implants (CIs) and normal hearing (NH) and the effects of the visual graphical features of Arabic graphemes (no-dot, single-dot, and multiple-dots) on the phoneme-grapheme correspondence.

    METHODS: Participants were matched for hearing age (Mean, M = 7 ± 1.03 years) and duration of exposure to Arabic sounds (M = 2.7 ± 1.2 years). All 28 Arabic phonemes were presented through a loudspeaker and participants pointed to the graphemes associated with the presented phonemes.

    RESULTS: A total of 336 and 616 tokens were collected for six children with CI and 11 NH children for each task, i.e., phonemes repetition and phoneme-grapheme correspondence. Both groups found it easier to repeat phonemes than the phoneme-grapheme correspondence. The children with CIs showed more confusion ([ظ, ز, ذ, ض, خ, ب, ه, س, ع, & ث] >10% correct scores) in phoneme-grapheme correspondence than the NH children ([ظ:14%] and [ث: 27%]). There was a significant interaction (p = 0.001) among the three visual graphical features and hearing status (CI and NH).

    CONCLUSION: Our results infer that non-native Malay children with CIs and NH use different strategies to process the Arabic graphemes' visual features for phoneme-grapheme correspondence.

    Matched MeSH terms: Phonetics
  19. Kaland C, Gordon MK
    Phonetica, 2022 Jun 27;79(3):219-245.
    PMID: 35981718 DOI: 10.1515/phon-2022-2022
    The prosodic structure of under-researched languages in the Trade Malay language family is poorly understood. Although boundary marking has been uncontroversially shown as the major prosodic function in these languages, studies on the use of pitch accents to highlight important words in a phrase remain inconclusive. In addition, most knowledge of pitch accents is based on well-researched languages such as the ones from the Western-Germanic language family. This paper reports two word identification experiments comparing Papuan Malay with the pitch accent language American English, in order to investigate the extent to which the demarcating and highlighting function of prosody can be disentangled. To this end, target words were presented to native listeners of both languages and differed with respect to their position in the phrase (medial or final) and the shape of their f0 movement (original or manipulated). Reaction times for the target word identifications revealed overall faster responses for original and final words compared to manipulated and medial ones. The results add to previous findings on the facilitating effect of pitch accents and further improve our prosodic knowledge of underresearched languages.
    Matched MeSH terms: Phonetics
  20. Phoon HS, Abdullah AC, Lee LW, Murugaiah P
    Clin Linguist Phon, 2014 May;28(5):329-45.
    PMID: 24446796 DOI: 10.3109/02699206.2013.868517
    To date, there has been little research done on phonological acquisition in the Malay language of typically developing Malay-speaking children. This study serves to fill this gap by providing a systematic description of Malay consonant acquisition in a large cohort of preschool-aged children between 4- and 6-years-old. In the study, 326 Malay-dominant speaking children were assessed using a picture naming task that elicited 53 single words containing all the primary consonants in Malay. Two main analyses were conducted to study their consonant acquisition: (1) age of customary and mastery production of consonants; and (2) consonant accuracy. Results revealed that Malay children acquired all the syllable-initial and syllable-final consonants before 4;06-years-old, with the exception of syllable-final /s/, /h/ and /l/ which were acquired after 5;06-years-old. The development of Malay consonants increased gradually from 4- to 6 years old, with female children performing better than male children. The accuracy of consonants based on manner of articulation showed that glides, affricates, nasals, and stops were higher than fricatives and liquids. In general, syllable-initial consonants were more accurate than syllable-final consonants while consonants in monosyllabic and disyllabic words were more accurate than polysyllabic words. These findings will provide significant information for speech-language pathologists for assessing Malay-speaking children and designing treatment objectives that reflect the course of phonological development in Malay.
    Matched MeSH terms: Phonetics*
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