Effects of deafness on acoustic characteristics of American English tense/lax vowels in maternal speech to infants
Recent studies have demonstrated that mothers exaggerate phonetic properties of infant-directed (ID) speech. However, these studies focused on a single acoustic dimension (frequency), whereas speech sounds are composed of multiple acoustic cues. Moreover, little is known about how mothers adjust pho...
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| Veröffentlicht in: | The Journal of the Acoustical Society of America 2012-08, Vol.132 (2), p.1039-1049 |
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| creator | KONDAUROVA, Maria V BERGESON, Tonya R DILLEY, Laura C |
| description | Recent studies have demonstrated that mothers exaggerate phonetic properties of infant-directed (ID) speech. However, these studies focused on a single acoustic dimension (frequency), whereas speech sounds are composed of multiple acoustic cues. Moreover, little is known about how mothers adjust phonetic properties of speech to children with hearing loss. This study examined mothers' production of frequency and duration cues to the American English tense/lax vowel contrast in speech to profoundly deaf (N = 14) and normal-hearing (N = 14) infants, and to an adult experimenter. First and second formant frequencies and vowel duration of tense (/i/, /u/) and lax (/I/, /ʊ/) vowels were measured. Results demonstrated that for both infant groups mothers hyperarticulated the acoustic vowel space and increased vowel duration in ID speech relative to adult-directed speech. Mean F2 values were decreased for the /u/ vowel and increased for the /I/ vowel, and vowel duration was longer for the /i/, /u/, and /I/ vowels in ID speech. However, neither acoustic cue differed in speech to hearing-impaired or normal-hearing infants. These results suggest that both formant frequencies and vowel duration that differentiate American English tense/lx vowel contrasts are modified in ID speech regardless of the hearing status of the addressee. |
| doi_str_mv | 10.1121/1.4728169 |
| format | Article |
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However, these studies focused on a single acoustic dimension (frequency), whereas speech sounds are composed of multiple acoustic cues. Moreover, little is known about how mothers adjust phonetic properties of speech to children with hearing loss. This study examined mothers' production of frequency and duration cues to the American English tense/lax vowel contrast in speech to profoundly deaf (N = 14) and normal-hearing (N = 14) infants, and to an adult experimenter. First and second formant frequencies and vowel duration of tense (/i/, /u/) and lax (/I/, /ʊ/) vowels were measured. Results demonstrated that for both infant groups mothers hyperarticulated the acoustic vowel space and increased vowel duration in ID speech relative to adult-directed speech. Mean F2 values were decreased for the /u/ vowel and increased for the /I/ vowel, and vowel duration was longer for the /i/, /u/, and /I/ vowels in ID speech. However, neither acoustic cue differed in speech to hearing-impaired or normal-hearing infants. These results suggest that both formant frequencies and vowel duration that differentiate American English tense/lx vowel contrasts are modified in ID speech regardless of the hearing status of the addressee.</description><identifier>ISSN: 0001-4966</identifier><identifier>ISSN: 1520-8524</identifier><identifier>EISSN: 1520-8524</identifier><identifier>DOI: 10.1121/1.4728169</identifier><identifier>PMID: 22894224</identifier><identifier>CODEN: JASMAN</identifier><language>eng</language><publisher>Melville, NY: Acoustical Society of America</publisher><subject>Acoustic Stimulation ; Adult ; Audiometry, Pure-Tone ; Auditory Threshold ; Biological and medical sciences ; Case-Control Studies ; Cues ; Deafness - diagnosis ; Deafness - physiopathology ; Deafness - psychology ; Female ; Fundamental and applied biological sciences. 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However, these studies focused on a single acoustic dimension (frequency), whereas speech sounds are composed of multiple acoustic cues. Moreover, little is known about how mothers adjust phonetic properties of speech to children with hearing loss. This study examined mothers' production of frequency and duration cues to the American English tense/lax vowel contrast in speech to profoundly deaf (N = 14) and normal-hearing (N = 14) infants, and to an adult experimenter. First and second formant frequencies and vowel duration of tense (/i/, /u/) and lax (/I/, /ʊ/) vowels were measured. Results demonstrated that for both infant groups mothers hyperarticulated the acoustic vowel space and increased vowel duration in ID speech relative to adult-directed speech. Mean F2 values were decreased for the /u/ vowel and increased for the /I/ vowel, and vowel duration was longer for the /i/, /u/, and /I/ vowels in ID speech. However, neither acoustic cue differed in speech to hearing-impaired or normal-hearing infants. These results suggest that both formant frequencies and vowel duration that differentiate American English tense/lx vowel contrasts are modified in ID speech regardless of the hearing status of the addressee.</description><subject>Acoustic Stimulation</subject><subject>Adult</subject><subject>Audiometry, Pure-Tone</subject><subject>Auditory Threshold</subject><subject>Biological and medical sciences</subject><subject>Case-Control Studies</subject><subject>Cues</subject><subject>Deafness - diagnosis</subject><subject>Deafness - physiopathology</subject><subject>Deafness - psychology</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Infant</subject><subject>Language</subject><subject>Male</subject><subject>Mother-Child Relations</subject><subject>Mothers - psychology</subject><subject>Phonetics</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Psychometrics</subject><subject>Severity of Illness Index</subject><subject>Sound Spectrography</subject><subject>Speech Acoustics</subject><subject>Speech Perception</subject><subject>Speech Production</subject><subject>Speech Production Measurement</subject><subject>Time Factors</subject><subject>Voice Quality</subject><issn>0001-4966</issn><issn>1520-8524</issn><issn>1520-8524</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU9v1DAQxS1ERZfCgS-AfEGCQ9p47NjOBamqlj9SpV7K2Zp1xl2jxFnsbIFvj9suBU6c7Df--WlmHmOvRHsqBIgzcaoMWKH7J2wlOmgb24F6ylZt24pG9Vofs-elfK2ys7J_xo4BbK8A1IrldQjkl8LnwAfCkKjUe-Lo531Zoud-ixn9QjneyXvufKrKY-LrdDPGsuULpUJnI_7gt_N3GguPiU9Y_yQcedkR-crMtRowLeUFOwo4Fnp5OE_Ylw_r64tPzeXVx88X55eNV9IuTTAacYDeAgwtCOUHCP1Gk9zoQZjOhGAkekvWS2HrOApDkCAlkN3AELQ8Ye8ffHf7zUSDp7RkHN0uxwnzTzdjdP--pLh1N_OtkwqM1KYavD0Y5Pnbnsriplg8jSMmqttxQhqpjKm9_B9tpRK96aSs6LsH1Oe5lEzhsSPRurs4nXCHOCv7-u8RHsnf-VXgzQHA4nEMGZOP5Q-nwXTCCPkLpqCo-g</recordid><startdate>20120801</startdate><enddate>20120801</enddate><creator>KONDAUROVA, Maria V</creator><creator>BERGESON, Tonya R</creator><creator>DILLEY, Laura C</creator><general>Acoustical Society of America</general><general>American Institute of Physics</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7T9</scope><scope>5PM</scope></search><sort><creationdate>20120801</creationdate><title>Effects of deafness on acoustic characteristics of American English tense/lax vowels in maternal speech to infants</title><author>KONDAUROVA, Maria V ; BERGESON, Tonya R ; DILLEY, Laura C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c438t-f76aad29822d0214cd2f9b6e3b6d1757ff73ac8e8c3188944aff32332e8b2df63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Acoustic Stimulation</topic><topic>Adult</topic><topic>Audiometry, Pure-Tone</topic><topic>Auditory Threshold</topic><topic>Biological and medical sciences</topic><topic>Case-Control Studies</topic><topic>Cues</topic><topic>Deafness - diagnosis</topic><topic>Deafness - physiopathology</topic><topic>Deafness - psychology</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Infant</topic><topic>Language</topic><topic>Male</topic><topic>Mother-Child Relations</topic><topic>Mothers - psychology</topic><topic>Phonetics</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychometrics</topic><topic>Severity of Illness Index</topic><topic>Sound Spectrography</topic><topic>Speech Acoustics</topic><topic>Speech Perception</topic><topic>Speech Production</topic><topic>Speech Production Measurement</topic><topic>Time Factors</topic><topic>Voice Quality</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>KONDAUROVA, Maria V</creatorcontrib><creatorcontrib>BERGESON, Tonya R</creatorcontrib><creatorcontrib>DILLEY, Laura C</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Linguistics and Language Behavior Abstracts (LLBA)</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The Journal of the Acoustical Society of America</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KONDAUROVA, Maria V</au><au>BERGESON, Tonya R</au><au>DILLEY, Laura C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of deafness on acoustic characteristics of American English tense/lax vowels in maternal speech to infants</atitle><jtitle>The Journal of the Acoustical Society of America</jtitle><addtitle>J Acoust Soc Am</addtitle><date>2012-08-01</date><risdate>2012</risdate><volume>132</volume><issue>2</issue><spage>1039</spage><epage>1049</epage><pages>1039-1049</pages><issn>0001-4966</issn><issn>1520-8524</issn><eissn>1520-8524</eissn><coden>JASMAN</coden><abstract>Recent studies have demonstrated that mothers exaggerate phonetic properties of infant-directed (ID) speech. However, these studies focused on a single acoustic dimension (frequency), whereas speech sounds are composed of multiple acoustic cues. Moreover, little is known about how mothers adjust phonetic properties of speech to children with hearing loss. This study examined mothers' production of frequency and duration cues to the American English tense/lax vowel contrast in speech to profoundly deaf (N = 14) and normal-hearing (N = 14) infants, and to an adult experimenter. First and second formant frequencies and vowel duration of tense (/i/, /u/) and lax (/I/, /ʊ/) vowels were measured. Results demonstrated that for both infant groups mothers hyperarticulated the acoustic vowel space and increased vowel duration in ID speech relative to adult-directed speech. Mean F2 values were decreased for the /u/ vowel and increased for the /I/ vowel, and vowel duration was longer for the /i/, /u/, and /I/ vowels in ID speech. 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| subjects | Acoustic Stimulation Adult Audiometry, Pure-Tone Auditory Threshold Biological and medical sciences Case-Control Studies Cues Deafness - diagnosis Deafness - physiopathology Deafness - psychology Female Fundamental and applied biological sciences. Psychology Humans Infant Language Male Mother-Child Relations Mothers - psychology Phonetics Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychometrics Severity of Illness Index Sound Spectrography Speech Acoustics Speech Perception Speech Production Speech Production Measurement Time Factors Voice Quality |
| title | Effects of deafness on acoustic characteristics of American English tense/lax vowels in maternal speech to infants |
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