1)T. Arai, "Time-reversed reverberation yields lower speech recognition rate by human and machine," Acoustical Science and Technology, Vol. 34, No.2, pp. 142-146, Mar., 2013. 
DOI=http://dx.doi.org/10.1250/ast.34.142
[Abstract] [PDF (277 kB)]

2) M. Tsuji, T. Arai and K. Yasu, "Preprocessing using consonant emphasis and vowel suppression for improving speech intelligibility in reverberant environments," The Journal of the Acoustical Society of Japan, Vol. 69, No. 4, pp. 179-183, Apr. 2013 (in Japanese).
[Abstract] [PDF (1.08 MB)]

3) K. Kurisu, S. Nakamura, K. Yasu and T. Arai, "Signal to overlap-masking ratio of the broadcasted speech and its listening difficulty: An application for an evaluation tool of sound system tuning," Acoustical Science and Technology, Vol. 34, No. 5, pp. 354-355, Sep. 2013.
DOI=http://dx.doi.org/10.1250/ast.34.354
[Abstract] [PDF (202 kB)]

4) H. Masuda and T. Arai, "Identification of English voiceless fricatives in multispeaker babble noise by native Japanese and English listeners: Influence of English proficiency," Acoustical Science and Technology, Vol. 34, No. 5, pp. 356-360, Sep. 2013. 
DOI=http://dx.doi.org/10.1250/ast.34.356
[Abstract] [PDF (316 kB)]

5) T. Arai, "Mechanical models of the human vocal tract," Acoustics Today, Vol. 9, No. 4, pp. 25-30, Oct. 2013. 
DOI = http://dx.doi.org/10.1121/1.4827000
[Abstract] [PDF (731 kB)]

6) D. Erickson, translated into Japanese by Kanako Tomaru and Takayuki Arai, "Speech rhythm in English and applications to second language teaching," Acoustical Science and Technology, Vol. 34, No. 3, pp.153-158, May 2013.
original paper DOI=http://doi.org/10.1250/ast.34.153
translated paper  [PDF (131 kB)]

7) T. Arai, "Mechanical bent-type models of the human vocal tract consisting of blocks," Proceedings of Meetings on Acoustics, Vol. 19, 025012, pp. 1-8, Jun. 2013. 
DOI = http://dx.doi.org/10.1121/1.4800980 
(International Congress on Acoustics, Montreal, Jun. 2013.) J. Acoust. Soc. Am. 133, pp. 3364, 2013.
[Abstract] [PDF (1.92 MB)]

8) T. Arai, "Learning acoustic phonetics by listening, seeing, and touching," Proceedings of Meetings on Acoustics, Vol. 19, 025017, pp. 1-9, Jun. 2013 (Invited Talk).
DOI = http://dx.doi.org/10.1121/1.4799629
 (International Congress on Acoustics, Montreal, Jun. 2013.)
J. Acoust. Soc. Am. 133, pp. 3414, 2013.
[Abstract] [PDF (995 kB)]

9) M. Sonu, T. Arai, K. Tajima and H. Kato, "Effect of speaking rate variation on the perception of singleton and geminate consonants in Japanese by native and Korean listeners," Proceedings of Meetings on Acoustics, Vol. 19, 025024, pp. 1-8, Jun. 2013.
DOI = http://dx.doi.org/10.1121/1.4801003
 (International Congress on Acoustics, Montreal, Jun. 2013.)
J. Acoust. Soc. Am. 133, pp. 3415, 2013.
[Abstract] [PDF (547 kB)]

10) K. Tomaru and T. Arai, "Perception of /ra/-/la/ contrast in different contexts: mono-syllable vs. sentence," Proceedings of Meetings on Acoustics, Vol. 19, 060289, pp. 1-9, Jun. 2013.
DOI = http://dx.doi.org/10.1121/1.4798755
 (International Congress on Acoustics, Montreal, Jun. 2013.)
J. Acoust. Soc. Am. 133, pp. 3610, 2013.
[Abstract] [PDF (319 kB)]

11) M. Kasuya and T. Arai, "Pronunciation of German suffixes by Japanese native speakers of different proficiency levels," Proceedings of Meetings on Acoustics, Vol. 19, 060290, pp. 1-8, Jun. 2013.
DOI = http://dx.doi.org/10.1121/1.4801058
 (International Congress on Acoustics, Montreal, Jun. 2013.)
J. Acoust. Soc. Am. 133, pp. 3611, 2013.
[Abstract] [PDF (172 kB)]

12) T. Arai, "Physical models of the vocal tract with a flapping tongue for flap and liquid sounds," Proc. of the INTERSPEECH, pp. 2019-2023, August, Lyon, 2013.
[Abstract] [PDF (3.47 MB)]

13) T. Arai, "On Why Japanese /r/ sounds are difficult for children to acquire," Proc. of the INTERSPEECH, pp. 2445-2449, August, Lyon, 2013.
[Abstract] [PDF (1.16 kB)]

14) K. Yasu, T. Arai, K. Kobayashi and M. Shindo, "Weighting of acoustic cues shifts to frication duration in identification of fricatives/affricates when auditory properties are degraded due to aging," Proc. of the INTERSPEECH, pp. 3152-3156, August, Lyon, 2013.
[Abstract] [PDF (243 kB)]

15)C. Oda, T. Yamamoto, Y. Sato, K. Yasu, T. Arai, M. Murata and Y. Kobayashi, "Undou-teikasei-kouon-shougai wo tomonau Parkinson-shoukougun-kanja heno chien-choukaku-feedback-kuukan no kouchiku to sono kouka," MDSJ (Movement Disorder Society of Japan), p. 85, Oct. 2013 (in Japanese).
[Abstract] [PDF (1.36 MB)]

16) K. Kurisu, K. Yasu, T. Arai and S. Nakamura, "The relationship between physical measures derived from broadcasted speech and its listening difficulty: Should speech itself be evaluated, not the path it travels?," Trans. on Tech. Comm. on Architectural Acoustics, The Acoustical Society of Japan, Vol. AA2013-36, pp. 1-8, Aug. 2013 (in Japanese).
[Abstract] [PDF (3.97 MB)]

17) A. Yanagibashi, N. Hodoshima and T. Arai, "The steady-state suppression improving for speech intelligibility in reverberant environment: The relation between and suppression rate, syllable position and vowel," Proc. Auditory Res. Meeting, The Acoustical Society of Japan, Vol. 43, No. 7, H-2013-100, pp. 583-587, Oct. 2013 (in Japanese).
[Abstract] [PDF (4.45 kB)]

18) T. Arai, "Acoustic properties of Japanese /r/ sounds and acquisition of their articulation," 39th meeting of Japanese Association of Communication Disorders, pp. 30-35, Jul. 2013 (in Japanese, Invited Talk, Proceedings published in 2014. See number (20) in the list of 2014.).[Abstract]

19) T. Arai, "Prototype of a physical model for English /r/-/l/ sounds: Proposing a new tool for phonetic education," Proc. of the 27th General Meeting of the Phonetic Society of Japan, pp. 53-58, Sept. 2013. (in Japanese) .
[Abstract] [PDF (2.90 MB)]

20) T. Arai, "Acoustic characteristics of Japanese /r/ sounds and errors in children's speech," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 349-352, Mar. 2013 (in Japanese).
[Abstract] [PDF (508 kB)]

21) E. Yanagisawa and T. Arai, "Acoustic characteristics of vowel off-glide followed by Japanese geminate," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 413-414, Mar. 2013 (in Japanese).
[Abstract] [PDF (637 kB)]

22) T. Igeta, M. Sonu and T. Arai, "An analysis of Korean back vowel formants in read speech: Focusing on phonological variation due to speech rate," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 441-444, Mar. 2013 (in Japanese).
[Abstract] [PDF (371 kB)]

23) M. Sonu, H. Kato, K. Tajima and T. Arai, "Perceptual characteristics of the bias toward geminate consonant perception in Japanese by Korean native listeners: Focusing on the relationship between segmental duration and loudness," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 549-552, Mar. 2013 (in Japanese).
[Abstract] [PDF (566 kB)]

24) K. Tomaru and T. Arai, "Effects of language background on perception of whole speech and chirp-only non-speech stimuli: The case of /ra/-/la/ contrast," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 553-556, 2013.
[Abstract] [PDF (288 kB)]

25) K. Kurisu, S. Nakamura, K. Yasu and T. Arai, "The relationship between the depth of loudness fluctuation and the listening difficulty ratings of various sentences under reverberant condition," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 1229-1230, Mar. 2013 (in Japanese).
[Abstract] [PDF (419 kB)]

26) S. Nakamura, K. Kurisu, K. Yasu and T. Arai, "The relationship between the depth of loudness fluctuation and the listening difficulty ratings of a word set with high word familiarities under reverberant conditions," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 1231-1232, Mar. 2013 (in Japanese).
[Abstract] [PDF (354 kB)]

27) T. Arai, "How we study education in acoustics and describe what we have studied," Proc. Spring Meet. Acoust. Soc. Jpn., pp. 1507-1510, Mar. 2013 (in Japanese, Invited Talk).
[Abstract] [PDF (298 kB)]

28) T. Arai, "Developing a vocal-tract model for producing a flap sound," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 296-298, Sep. 2013 (in Japanese).
[Abstract] [PDF(1.11 MB)]

29)A. Yanagibashi, N. Hodoshima and T. Arai, "The preprocessing approach which changes suppression rates of steady-state portions in each mora for improving speech intelligibility in reverberant environments," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 357-358, Sep. 2013 (in Japanese).
[Abstract] [PDF(290 kB)]

30) Y. Sato, T. Arai, K. Yasu, C. Oda, T. Yamamoto and M. Murata, "Creating sound field of delayed auditory feedback for elderly people," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 405-408, Sep. 2013 (in Japanese).
[Abstract] [PDF(495 kB)]

31) M. Suzuki, N. Kaneko, T. Arai and K. Yasu, "Improving speech intelligibility in reverberant environments for elderly people: By using high-frequency emphasis," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 409-412, Sep. 2013 (in Japanese).
[Abstract] [PDF(573 kB)]

32) N. Kaneko, M. Suzuki, T. Arai and K, Yasu, "Improving speech intelligibility in reverberant environments for elderly people: By using consonant emphasis and vowel suppression," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 413-415, Sep. 2013 (in Japanese).
[Abstract] [PDF(502 kB)]

33) H. Masuda, T. Arai and S. Kawahara, "Preliminary analysis on the identification of English consonants in noise and/or reverberation by native Japanese and English listeners," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 417-420, Sep. 2013.
[Abstract] [PDF(249 kB)]

34) M. Kasuya and T. Arai, "An acoustical analysis of pronunciation of German suffixes by learners with different language rhythms," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 421-424, Sep. 2013.
[Abstract] [PDF(244 kB)]

35) M. Sonu, M. Fujimoto and T. Arai, "Differences in loudness between Japanese single and geminate consonants," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 437-438, Sep. 2013 (in Japanese).
[Abstract] [PDF(343 kB)]

36) T. Arai, "Evaluation of the quality of vowels produced by the block-type vocal-tract model," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 1371-1374, Sep. 2013.
[Abstract] [PDF(331 kB)]

37)H. Kawata, T. Arai, K. Yasu, K. Kobayashi and M. Shindo, "Perception of geminate fricative consonants by elderly people: Effect of degradation of auditory temporal resolution," Proc. Autumn Meet. Acoust. Soc. Jpn., pp. 1381-1384, Sep. 2013 (in Japanese).
[Abstract] [PDF(565 kB)]