Takeshi Nozawa | Ritsumeikan University (original) (raw)

Papers by Takeshi Nozawa

Research paper thumbnail of Effects of attention and training method on the identification of American English vowels and coda nasals by native Japanese listeners

International Congress of Phonetic Sciences, 2015

The accuracy with which native Japanese listeners identified American English vowels and coda nas... more The accuracy with which native Japanese listeners identified American English vowels and coda nasals was assessed before and after training. The listeners were divided into four groups, each of which received a different type of training. Two of the four groups were vowel-oriented; one of these groups received vowel identification training (VI), while the other received vowel discrimination training (VD). The other two groups were nasal-oriented. One of the nasal-oriented groups received nasal identification training (NI), and the other received nasal discrimination training (ND). The results revealed that the VI group made more gains in its ability to identify vowels than the other groups after training. However, training appeared to have no effect on nasal identification, and no significant difference among the groups was observed.

Research paper thumbnail of Effects of the place of articulation of the following consonant on the identification and discrimination of American English vowels by native speakers of Japanese and Korean

Native speakers of Japanese and Korean identified 6 American English monophthongs /i, ɪ, ɛ, ae, ɑ... more Native speakers of Japanese and Korean identified 6 American English monophthongs /i, ɪ, ɛ, ae, ɑ, ʌ/ and discriminated 6 vowel pairs /i/-/ɪ/, /ɛ/-/ɪ/, /ae/-/ɛ/, /ae/-/ɑ/, /ae/-/ʌ/, /ɑ/-/ʌ/ in in /hVt/, /pVt/, /pVn/ and /pVl/ frames. The two groups of listeners' identification and discrimination accuracy were submitted to 2 mixed-design ANOVAs, respectively, with 2 Listener Groups as a between-subject variable, and 6 frames and 6 vowels (or vowel pairs) as within-subject variables. As for identification, a main effect of vowel and frame are both significant (p<.001), and a three-way interaction of listener groups × vowels × frames is also significant (p<.001). Post-hoc pair-wise comparisons revealed that Korean listeners identified /ʌ/ significantly better than Japanese listeners. This is probably because Korean listeners can equate the English vowel to Korean /ʌ/. Japanese listeners' identification accuracy of /i/ is lower before /n/ and /l/, but that of Korean listen...

Research paper thumbnail of You are what you eat phonetically

Language Learning & Language Teaching, 2007

Research paper thumbnail of Amount of native-language (L1) use affects the pronunciation of an L2

Journal of Phonetics, 1997

Research paper thumbnail of How Listeners' L1 Affects Perceived Similarity of American English, Japanese and Korean Vowels

Native speakers of Japanese and Korean assessed perceived similarity between American English vow... more Native speakers of Japanese and Korean assessed perceived similarity between American English vowels and vowels of their L1, and native speakers of American English performed the same task. The results revealed no significant main effects of listener groups, but a significant interaction of vowels by listener groups was confirmed. The results indicate that listeners’ L1 phonology as well as phonetic distance in the vowel space affects perceived similarity between L1 and nonnative phones. The results also imply that what speakers of Japanese and Korean believe are close to their L1 phones are not necessarily perceived as similar by English speakers.

Research paper thumbnail of Effects of attention and training method on the identification of American English vowels and coda nasals by native Japanese listeners

The accuracy with which native Japanese listeners identified American English vowels and coda nas... more The accuracy with which native Japanese listeners identified American English vowels and coda nasals was assessed before and after training. The listeners were divided into four groups, each of which received a different type of training. Two of the four groups were vowel-oriented; one of these groups received vowel identification training (VI), while the other received vowel discrimination training (VD). The other two groups were nasal-oriented. One of the nasal-oriented groups received nasal identification training (NI), and the other received nasal discrimination training (ND). The results revealed that the VI group made more gains in its ability to identify vowels than the other groups after training. However, training appeared to have no effect on nasal identification, and no significant difference among the groups was observed.

Research paper thumbnail of The production of American English vowels by native Japanese speakers in two different conditions

The Journal of the Acoustical Society of America

Research paper thumbnail of Effects of Individual difference and L1 phonology on the identification and discrimination of American English vowels by native Japanese and Korean listeners

The Journal of the Acoustical Society of America

Research paper thumbnail of Calibrating rhythms in L1 Japanese and Japanese accented English

The Journal of the Acoustical Society of America

Research paper thumbnail of The effects of prenasal raising of American English /æ/ on the identification of American English vowels by native Japanese and Korean listeners

The Journal of the Acoustical Society of America

Research paper thumbnail of アメリカ英語・韓国語・日本語母語話者による音節末鼻音の同定

Research paper thumbnail of アメリカ英語・韓国語・日本語母語話者による音節末閉鎖音の同定

Research paper thumbnail of Effects of Consonantal Contexts on the Discrimination and Identification of American English Vowels by Native Speakers of Japanese

ことばの科学研究 Journal of the Japan Society For Speech Sciences, 2012

Research paper thumbnail of The identification of American English vowels by native speakers of Japanese before three nasal consonants

The Journal of the Acoustical Society of America, 2014

Research paper thumbnail of Effects of “catch” trials on the discrimination of American English vowels by native Japanese speakers

The Journal of the Acoustical Society of America, 2009

Research paper thumbnail of Perceived similarity of English, Korean, and Japanese stops for native English, Korean, and Japanese listeners

The Journal of the Acoustical Society of America, 2010

Research paper thumbnail of Discriminability and identification of English vowels by native Japanese speakers in different consonantal contexts

The Journal of the Acoustical Society of America, 2003

Research paper thumbnail of Perception of Japanese mora nasal ∕N∕ and mora obstruent ∕Q∕ by native Japanese, English, and Thai speakers

The Journal of the Acoustical Society of America, 2008

Research paper thumbnail of Perception of Japanese mora nasal /N/ and mora obstruent /Q/ by native Japanese and English speakers

The Journal of the Acoustical Society of America, 2007

Research paper thumbnail of Perception of English vowels by native Korean and Japanese speakers

The Journal of the Acoustical Society of America, 2001

Research paper thumbnail of Effects of attention and training method on the identification of American English vowels and coda nasals by native Japanese listeners

International Congress of Phonetic Sciences, 2015

The accuracy with which native Japanese listeners identified American English vowels and coda nas... more The accuracy with which native Japanese listeners identified American English vowels and coda nasals was assessed before and after training. The listeners were divided into four groups, each of which received a different type of training. Two of the four groups were vowel-oriented; one of these groups received vowel identification training (VI), while the other received vowel discrimination training (VD). The other two groups were nasal-oriented. One of the nasal-oriented groups received nasal identification training (NI), and the other received nasal discrimination training (ND). The results revealed that the VI group made more gains in its ability to identify vowels than the other groups after training. However, training appeared to have no effect on nasal identification, and no significant difference among the groups was observed.

Research paper thumbnail of Effects of the place of articulation of the following consonant on the identification and discrimination of American English vowels by native speakers of Japanese and Korean

Native speakers of Japanese and Korean identified 6 American English monophthongs /i, ɪ, ɛ, ae, ɑ... more Native speakers of Japanese and Korean identified 6 American English monophthongs /i, ɪ, ɛ, ae, ɑ, ʌ/ and discriminated 6 vowel pairs /i/-/ɪ/, /ɛ/-/ɪ/, /ae/-/ɛ/, /ae/-/ɑ/, /ae/-/ʌ/, /ɑ/-/ʌ/ in in /hVt/, /pVt/, /pVn/ and /pVl/ frames. The two groups of listeners' identification and discrimination accuracy were submitted to 2 mixed-design ANOVAs, respectively, with 2 Listener Groups as a between-subject variable, and 6 frames and 6 vowels (or vowel pairs) as within-subject variables. As for identification, a main effect of vowel and frame are both significant (p<.001), and a three-way interaction of listener groups × vowels × frames is also significant (p<.001). Post-hoc pair-wise comparisons revealed that Korean listeners identified /ʌ/ significantly better than Japanese listeners. This is probably because Korean listeners can equate the English vowel to Korean /ʌ/. Japanese listeners' identification accuracy of /i/ is lower before /n/ and /l/, but that of Korean listen...

Research paper thumbnail of You are what you eat phonetically

Language Learning & Language Teaching, 2007

Research paper thumbnail of Amount of native-language (L1) use affects the pronunciation of an L2

Journal of Phonetics, 1997

Research paper thumbnail of How Listeners' L1 Affects Perceived Similarity of American English, Japanese and Korean Vowels

Native speakers of Japanese and Korean assessed perceived similarity between American English vow... more Native speakers of Japanese and Korean assessed perceived similarity between American English vowels and vowels of their L1, and native speakers of American English performed the same task. The results revealed no significant main effects of listener groups, but a significant interaction of vowels by listener groups was confirmed. The results indicate that listeners’ L1 phonology as well as phonetic distance in the vowel space affects perceived similarity between L1 and nonnative phones. The results also imply that what speakers of Japanese and Korean believe are close to their L1 phones are not necessarily perceived as similar by English speakers.

Research paper thumbnail of Effects of attention and training method on the identification of American English vowels and coda nasals by native Japanese listeners

The accuracy with which native Japanese listeners identified American English vowels and coda nas... more The accuracy with which native Japanese listeners identified American English vowels and coda nasals was assessed before and after training. The listeners were divided into four groups, each of which received a different type of training. Two of the four groups were vowel-oriented; one of these groups received vowel identification training (VI), while the other received vowel discrimination training (VD). The other two groups were nasal-oriented. One of the nasal-oriented groups received nasal identification training (NI), and the other received nasal discrimination training (ND). The results revealed that the VI group made more gains in its ability to identify vowels than the other groups after training. However, training appeared to have no effect on nasal identification, and no significant difference among the groups was observed.

Research paper thumbnail of The production of American English vowels by native Japanese speakers in two different conditions

The Journal of the Acoustical Society of America

Research paper thumbnail of Effects of Individual difference and L1 phonology on the identification and discrimination of American English vowels by native Japanese and Korean listeners

The Journal of the Acoustical Society of America

Research paper thumbnail of Calibrating rhythms in L1 Japanese and Japanese accented English

The Journal of the Acoustical Society of America

Research paper thumbnail of The effects of prenasal raising of American English /æ/ on the identification of American English vowels by native Japanese and Korean listeners

The Journal of the Acoustical Society of America

Research paper thumbnail of アメリカ英語・韓国語・日本語母語話者による音節末鼻音の同定

Research paper thumbnail of アメリカ英語・韓国語・日本語母語話者による音節末閉鎖音の同定

Research paper thumbnail of Effects of Consonantal Contexts on the Discrimination and Identification of American English Vowels by Native Speakers of Japanese

ことばの科学研究 Journal of the Japan Society For Speech Sciences, 2012

Research paper thumbnail of The identification of American English vowels by native speakers of Japanese before three nasal consonants

The Journal of the Acoustical Society of America, 2014

Research paper thumbnail of Effects of “catch” trials on the discrimination of American English vowels by native Japanese speakers

The Journal of the Acoustical Society of America, 2009

Research paper thumbnail of Perceived similarity of English, Korean, and Japanese stops for native English, Korean, and Japanese listeners

The Journal of the Acoustical Society of America, 2010

Research paper thumbnail of Discriminability and identification of English vowels by native Japanese speakers in different consonantal contexts

The Journal of the Acoustical Society of America, 2003

Research paper thumbnail of Perception of Japanese mora nasal ∕N∕ and mora obstruent ∕Q∕ by native Japanese, English, and Thai speakers

The Journal of the Acoustical Society of America, 2008

Research paper thumbnail of Perception of Japanese mora nasal /N/ and mora obstruent /Q/ by native Japanese and English speakers

The Journal of the Acoustical Society of America, 2007

Research paper thumbnail of Perception of English vowels by native Korean and Japanese speakers

The Journal of the Acoustical Society of America, 2001