1. T. Hikichi and N. Osaka, ``Sound timbre interpolation based on physical modeling,'' Acoustical Science and Technology Vol. 22, No. 2, 101-111 (2001). (formerly J. Acoust. Soc. Jpn. (E))
2. Naotoshi Osaka, Ken-ichi Sakakibara, and Takafumi Hikichi, `` A sound synthesis system 'Otkinshi' on Windows,'' Electronics and Communications in Japan, Part 2, Vol. 87, No. 11, 2004.
3. Takafumi Hikichi, Naotoshi Osaka, and Fumitada Itakura, ``Time-domain simulation of sound production of the sho,'' The Journal of the Acoustical Society of America, Vol. 113, No. 2, pp. 1092-1101, February 2003.
4. Takafumi Hikichi, Naotoshi Osaka, and Fumitada Itakura, ``Sho-So-In: Control of a physical model of the sho by means of automatic feature extraction from real sounds,'' Journal of New Music Research, Vol. 33, No. 4, pp. 355-365, 2004. [pdf file]

1. T. Hikichi and N. Osaka, ``Measurements of the resonance frequencies and the reed vibration of the sho,'' Acoustical Science and Technology Vol. 23, No. 1, 25-27 (2002).
2. K.-I. Sakakibara and N. Osaka, ``Vibrato control using a sinusoidal model'', J. Acoust. Soc. Jpn., 21-5, pp. 279 - 281, Acoust. Soc. Jpn., (May, 2000).

1. Naotoshi Osaka, ``Development of Sound Editor `Otkinshi' on NeXT Computer,' Proc. of Technical meeting of special interest group on Music, Information Processing Society of Japan, Dec. 1990. (in Japanese)
2. Naotoshi Osaka, ``On Sound material development system `Otkinshi','' Proc. of summer symposium '91, Special interest group on Music, Information Processing Society of Japan, Aug. 1991. (in Japanese)
3. Naotoshi Osaka, ``Computer music system exhibition `Otkinshi','' Proc. of Technical meeting of special interest group on Music, Information Processing Society of Japan, Dec. 1991. (in Japanese)
4. Naotoshi Osaka, ``On a sound generation and performance system,'' Proc. of technical meeting of IEICE EA92-31, pp. 27-32, June 1992. (in Japanese)
5. Naotoshi Osaka, ``Timbre synthesis and information processing,'' in Suzuki et al.,``Research goal of music information processing,'' Proc. of Technical meeting of special interest group on Music, Information Processing Society of Japan, 4-3, pp. 21-23, Dec. 1993. (in Japanese)
6. Naotoshi Osaka, ``Characteristics analysis of a sinusoidal model and an application to sound synthesis,'' Proc. of Technical meeting of special interest group on Music, Information Processing Society of Japan, Feb. 1994. (in Japanese)
7. Naotoshi Osaka, ``A study on a sinusoidal model for voice quality control,'' Annual meeting of Acoustic Society of Japan, spring '94, 3-8-7, Mar. 1994. (in Japanese)
8. Naotoshi Osaka, ``Computer music and sound synthesis technology,'' Journal of Acoustic society of Japan, Vol 50, No. 10, (Tutorial) pp. 842-848, 1994. (in Japanese)
9. Naotoshi Osaka, ``Computer music and acoustic technology,'' Proc. of technical meeting of IEICE EA94-28, pp. 23-30, July 1994. (in Japanese)
10. Naotoshi Osaka, ``Voice quality analysis of stationary vowels using a sinusoidal model,'' Annual meeting of Acoustic Society of Japan, Fall '94, 1-5-6, Oct. 1994. (in Japanese)
11. Naotoshi Osaka, Annual meeting of Acoustic Society of Japan, ``Voice quality interpolation of vowels using a sinusoidal model,'' Fall '95, 2-1-10, Sep. 1995. (in Japanese)
12. Naotoshi Osaka, ``Timbre interpolation using a sinusoidal model,'' Proc. of Technical meeting of special interest group on Music, Information Processing Society of Japan, 13-9, pp. 45-50, Dec. 1995. (in Japanese)
13. Naotoshi Osaka, ``Timbre interpolation using a sinusoidal model,'' Proc. of technical meeting of IEICE SP95-130, pp. 9-16, Feb. 1996. (in Japanese)
14. T. Hikichi and N. Osaka, ``Morphing of sounds of the strings and the elastic media'', Tech. Rep. Musical Acoustics, MA96-18, pp.69-76 (1996) (in Japanese).
15. Naotoshi Osaka, ``On a submitted music piece - Sound morphing - '', Proc. of technical meeting of IEICE SP96-114, pp. 7-12, 1997. 2.
16. T.Hikichi and N. Osaka, ``Morphing of sounds of the strucked strings, plucked strings, and elastic media'', Tech. Rep. IEICE, SP96-111, pp.23-28 (1997) (in Japanese).
17. T. Hikichi and N. Osaka, ``Sound timbre interpolation of the struck strings, plucked strings, and the vibration of the elastic media'', Proceedings of Spring Meet. Acoust. Soc. Japan, 2-9-12, pp.659-660 (1997) (in Japanese).
18. T. Hikichi and N. Osaka, ``On the timbre perception of sound morphing using a physical model'', Tech. Rep. IEICE, SP97-109, pp.7-14 (1998) (in Japanese).
19. T. Hikichi and N. Osaka, ``Sound morphing using a physical model and timbre perception'', Proceedings of Spring Meet. Acoust. Soc. Japan, 2-9-7, pp.637-638, 1998. 3. (in Japanese).
20. T. Hikichi and N. Osaka, ``Accounting for friction into a plucked string synthesis model'', Tech. Rep. Musical Acoustics, MA98-25, pp.75-80 (1998) (in Japanese). 1998.9.
21. T. Hikichi and N. Osaka, ``Effect of a friction term on a plucked string model'', Proceedings of Autumn Meet. Acoust. Soc. Japan, 1-7-4, pp.641-642, 1998. (in Japanese).
22. T. Hikichi and N. Osaka, ``Morphing between piano And guitar tones based on physical modeling,'' IPSJ SIGMUS. notes 99-MUS-31, pp.19-26 (1999) (in Japanese).
23. Naotoshi Osaka and Takafumi Hikichi, ``Sound generation system `Otkinshi' on Windows,'' IPSJ SIGMUS. notes 99-MUS-31, pp.27-30 (1999) (in Japanese).
24. T. Hikichi and N. Osaka, ``Timbre interpolation between piano and guitar sounds using a spectral centroid,'' Proceedings of Autumn Meet. Acoust. Soc. Japan, 1-4-7 (1999) (in Japanese).
    
25. Naotoshi Osaka and Takafumi Hikichi, ``A study on sound synthesis system `Otkinshi', '' Proceedings of Autumn Meet. Acoust. Soc. Japan,1-4-8, pp. 549-550 (1999) (in Japanese).
    
26. Masahiko Todoroki, Ken-ichi Sakakibara, Naotoshi Osaka and Seiji Adachi, ``Throat singing in Tyva, Khoomei,'' Proc. of Tech. Rep. Musical Acoustics, MA99-, pp.- (1999) (in Japanese). 1999. 11.
    

1. Naotoshi Osaka, ``Otkinshi: A sound generation and performance system,'' Proc. of ICMC 92 pp. 406-407. San Jose, California, 1992.
2. Naotoshi Osaka, ``Sound synthesis in computer music,'' Proc. of French-Japanese workshop on synthetic world, Univ. of Aizu, Dec. 1993.
3. Naotoshi Osaka, ``An analysis of voice quality using sinusoidal model,'' Proc. of ICSLP 94, pp. 1647-1650, Yokohama, Japan, 1994.
4. Naotoshi Osaaka, ``Timbre interpolation of sounds using a sinusoidal model,'' ICMC 95 Proceeding, pp. 408-411, Banff, Canada, Sep. 1995.
5. Naotoshi Osaka and Takafumi Hikichi, ``Auralization of physical actions and biosignal,'' Proc. of ASVA97 (Int'l Symp. on Simulation, Visualization and Auralization for Acoustic Research and Education), pp. 403 - 404, Tokyo, Japan, April, 1997.
6. Naotoshi Osaka, Keiji Hirata, Takafumi Hikichi, ``Studio report of computer music research group,'' Proc. of the ICMC'97, pp. 293-296, Thessaloniki, Greece, Sep. 1997.
7. Naotoshi Osaka, ``Timbre morphing and interpolation based on a sinusoidal model,'' Proc. of ICA/ASA joint meeting, pp.83-84, Seattle, June 1998.
8. Naotoshi Osaka, ``Visual manipulation environment on sound synthesis, modification and performances'' Proc. of International Computer Music Conference , pp. 429-432, Beijing, 1999.
9. Takafumi Hikichi and Naotoshi Osaka, ``An approach to sound morphing based on physical modeling,'' Proc. of International Computer Music Conference , pp. 108-111, Beijing, 1999.
10. T. Hikichi and N. Osaka, ``Time-domain simulation of sound production of the sho,'' 17th International Congress on Acoustics (ICA) 2001, Rome, Italy (Sep., 2001).
11. T. Hikichi and N. Osaka, ``Time-domain simulation of sound production of the sho, the Japanese free-reed mouth organ,'' International Symposium on Musical Acoustics (ISMA) 2001, Perugia, Italy, 71-76 (2001).
12. Naotoshi Osaka, ``Sound synthesis and its application to computer music,'' Proc. of IAEA2002, (Int. Association of Empirical Aestics),pp.57-66, Takarauka, 2002, 8.
13. Naotoshi Osaka, Ken-Ichi Sakakibara, and Takafumi Hikichi, ``The sound synthesis system "Otkinshi": its data structure and graphycal user interface,'' Proc. of ICMC 2002,pp. 188-191, Goeteborg, Sweden, 2002. 9.
14. Takafumi Hikichi and Naotoshi Osaka, ``A physical model of the sho and its application to articulation synthesis,'' Proc. of ICMC 2002, pp.1-4, Goeteborg, Sweden 2002. 9.
15. Ken-Ichi Sakakibara, Hiroshi Imagawa, Seiji Niimi and Naotoshi Osaka, ``Synthesis of the laryngeal source of throat singing using a 2x2-mass model,'' Proc. of ICMC 2002, pp.5-8, Goeteborg, Sweden, 2002. 9.
16. Naotoshi Osaka, ``Timbre synthesis technology and its application to computer music compositions,'' Proceedings of ICA 2004, Vol IV, pp.2501-2504, Kyoto, 2004, 4.
17. Naotoshi Osaka, ``Toward construction of a timbre theory for music composition,'' Proceeding of ICMC 2004, pp.227-230, Miami, 2004 11.[pdf file]
18. Naotoshi Osaka, ``Concatenation and stretch/squeeze of musical instrumental sound using morphing,'' Proceeding of ICMC 2005, to be published, Barcelona, 2005 9. [pdf file]

Review

1. Naotoshi Osaka, ``A new trend ofsound synthesis: as supporting technology of media content creation,'' J. Acoust. Soc. Jpn, Vol. 62, No.6, pp.460-465, 2006. (in Japanese)

Invited Lectures