Software:Intelligent Speech Analyser

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Short description: Finnish speech and voice analyser
1980s Intelligent Speech Analyser™ (ISA) system. On the left there is a Macintosh SE/30 with a hard drive. On the right there is an ISA signal computer that includes a Texas universal 16-bit TMS32010 signal processor and a separate large 16-bit signal memory. Sony 16-bit 2-channel converters are connected to the signal computer. ISA measures frequencies with scales: hertz, Bark, ERB, mel, Koenig, octave, semitone, semitone/100 and semitone/1000.[1][2][3]
Intelligent Speech Analyser (ISA)

Intelligent Speech Analyser (ISA) is a speech and voice analyzer developed in Finland.

The first presentation of the Intelligent Speech Analyser (ISA)

The first presentation of the Intelligent Speech Analyser (ISA) developed by Raimo Olavi Toivonen took place in January 1987 at the Finnish Phonetics Meeting at Jyväskylä University.[3] The development work started in 1985 and has continued since then.[1][2]

Articles whose some results have been obtained using ISA

In 100 academic theses, 27 of which are academic dissertations, spoken language have been studied with the help of the ISA developed by Toivonen. There are a total of almost 500 publications. Using ISA, 14 spoken and written languages have been researched. These are Finnish, Swedish, Estonian, Icelandic, Hungarian, Polish, Czech, German, Russian, English, French, Greek, Portuguese, and Spanish.[1][2][4][5][6][7][8][9][10][11]

Using ISA, scientific publications were published in the following areas:

References

  1. ↑ 1.0 1.1 1.2 1.3 Google Scholar: "developed by Raimo Toivonen, (51 results)". https://scholar.google.com/scholar?hl=fi&as_sdt=0%2C5&q=%22developed+by+Raimo+Toivonen%22&btnG=. 
  2. ↑ 2.0 2.1 2.2 2.3 Google Scholar: "Intelligent Speech Analyser, (99 results)". https://scholar.google.com/scholar?hl=fi&as_sdt=0%2C5&q=%22Intelligent+Speech+Analyser%22+%7C+%22Intelligent+Speech+Analyzer%22&btnG=. 
  3. ↑ 3.0 3.1 Toivonen, Raimo: The first presentation of the Intelligent Speech Analyser™ (ISA) took place in the Meeting of Finnish Phoneticians in University of Jyväskylä 16.–17.1.1987.
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Master, Suely: "Análise acústica e perceptivo-auditiva da voz de atores e não atores masculinos: long term average spectrum e o "formante do ator"". http://repositorio.unifesp.br/bitstream/handle/11600/20991/Publico-20991.pdf?sequence=1&isAllowed=y.  (Acoustic and Perceptual Analyses of Brazilian Male Actors' and Nonactors' Voices: Long-term Average Spectrum and the “Actor's Formant”). Dissertação 2005. Escola Paulista de Medicina, Universidade Federal de São Paulo. Suely Master, currently professor at the State University of São Paulo. Suely Master's LTAS articles.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 Master, Suely; De Biase, Noemi Grigoletto; Chiari, Brasília Maria; Laukkanen, Anne-Maria: "Acoustics and Perceptual Analyses of Brazilian Male Actors' and Non actors' Voices Long-term Average Spectrum and the "Actor's Formant". Journal of Voice, 2008;22:2:146–154.". https://www.sciencedirect.com/science/article/pii/S0892199706001263.  doi:10.1016/j.jvoice.2006.09.006.
  6. ↑ Pereira, Patricia Moraes: "Análise comparativada voz em jovens mulheres antes e depois da prova de fala contínua". https://teses.usp.br/teses/disponiveis/17/17151/tde-20072016-143744/publico/PatriciaMoraesPereiraOrig.pdf.  (A comparative analysis of the voices of young women before and after the continuous speech test). Dissertação 2015. Faculdade de Medicina de Ribeirão Preto, Universidade Federal de São Paulo. doi:10.11606/D.17.2017.tde-20072016-143744
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 Kuronen, Mikko: Vokaluttalets akustik i sverigesvenska, finlanssvenska och finska. University of Jyväskylä, 2000, Doctor's thesis, contains 181 ISA pictures. OCLC 477065490. https://jyx.jyu.fi/bitstream/handle/123456789/25579/9789513940935.pdf?sequence=1&isAllowed=y. Retrieved January 19, 2021.  Mikko Kuronen, currently senior lecturer at the University of Jyväskylä.
  8. ↑ 8.0 8.1 8.2 Riad, Tomas: Riad, Tomas (2014). The Phonology of Swedish. The Phonology of the World's Languages, Oxford University Press, January 2014, 356 pages. Contains Bark scale formant chart pictures of the Intelligent Speech Analyser™ (ISA) on pages 19, 20, 22, 40, 41. ISBN 9780199543571. OCLC 940606268. https://books.google.com/books?id=_VoQAgAAQBAJ&pg=PA35. Retrieved February 2, 2021.  Tomas Riad, professor of Nordic languages at the University of Stockholm, member of the Swedish Academy since 2011 (chair nr. 6).
  9. ↑ 9.0 9.1 9.2 9.3 Vilkman, Erkki: Studies on human voice production : anatomical, biomechanical, physiological and psychophysiological studies with special reference to fundamental frequency, Acta Universitatis Tamperensis ser A vol 232. 1987. Dissertation. OCLC 310764310. This work use the fundamental frequency analysis of human voice and the computer field of human voice developed by Toivonen since 1983. These DSP methods, developed by Toivonen are used in the Intelligent Speech Analyser™ (ISA) since 1986. Erkki Vilkman, currently professor emeritus in phoniatrics. Vilkman's Best Poster Award 2018–.
  10. ↑ 10.0 10.1 10.2 10.3 Vilkman, Erkki: An Apparatus for Studying the Role of the Cricothyroid Articulation in the Voice Production of Excised Human Larynges. Folia Phoniatrica et Logopaedica, 1987;39(4):169–77. doi:10.1159/000265856.
  11. ↑ 11.0 11.1 Kastinen, Arja: "Erään 15-kielisen kanteleen akustisesta tutkimuksesta (An acoustical investigation of the specific 15-string kantele)". https://www.researchcatalogue.net/profile/show-work?work=1013737.  Sibelius-Akatemian kansanmusiikin osaston julkaisuja 5 (Publications of the Sibelius Academy's Department of Folk Music 5). Dissertation. 2000. OCLC 57219457. The work was supervised by Rauno Esa Nieminen, Doctor of Music. Intelligent Speech Analyser™ (ISA) developed by Toivonen was used in acoustical investigations of the specific 15-string kantele. Arja Kastinen.
  12. ↑ 12.0 12.1 Kuronen, Mikko: "Vokaluttalets akustik i sverigesvenska, finlanssvenska och finska". https://www.finna.fi/Record/tuni.992806334205973.  (The acoustics of the vowel pronunciation in Swedish-Swedish, Finnish-Swedish and Finnish). Licentiate work. University of Tampere, Department of Philology II, 162 pages, March 1997. Contains 88 ISA analysis pictures.
  13. ↑ 13.0 13.1 Kuronen, Mikko: Vokaluttalet i sverigesvenska och finlanssvenska (The vowel pronunciation in Swedish and Finnish Swedish). University of Helsinki, Department of Phonetics, 37 pages, December 1995. Contains many ISA analysis pictures.
  14. ↑ 14.0 14.1 Kuronen, Mikko: "Om morfologiskt komplexa ords prosodi i rikssvenska och finlands-svenska, en kontrastiv studie". https://www.finna.fi/Record/tuni.992153864205973.  (On the prosody of morphologically complex words in Swedish and Finnish-Swedish, a contrastive study). Pro gradu – avhandling i nordisk filologi vid Tammerfors universitet, 100 pages, Oktober 1993. Contains many ISA analysis pictures.
  15. ↑ 15.0 15.1 15.2 15.3 15.4 Suomi, Kari: Johdatusta puheen akustiikkaan (Introduction to Speech Acoustics). Textbook. University of Oulu, 1990. OCLC 492194175. Kari Suomi, currently professor emeritus in phonetics at the University of Oulu.
  16. ↑ 16.00 16.01 16.02 16.03 16.04 16.05 16.06 16.07 16.08 16.09 16.10 Iivonen, Antti; Toivonen, Raimo: "Simulation of the psycho-acoustical vowel space for linguistic applications. Eurospeech 1989, First European Conference on Speech Communication and Technology, 1989;2:2289–2292". https://www.isca-speech.org/archive/archive_papers/eurospeech_1989/e89_2289.pdf.  Antti Iivonen, currently professor emeritus in phonetics at University of Helsinki.
  17. ↑ 17.00 17.01 17.02 17.03 17.04 17.05 17.06 17.07 17.08 17.09 17.10 Iivonen, Antti; Toivonen, Raimo: Computer in der psychoakustischen analyse und representation der vokale und vokalsysteme. Computergestützte Sprachverarbeitung für Phonetik und Diagnostik, June 12–14, 1989. (Gall, V., Hollmach, U. Hrsg.), Martin-Luther Universität Halle-Wittenberg, Wissenschaftliche Beiträge 1990/36 (F98), s. 34–37. OCLC 924598345.
  18. ↑ Löfstedt, Ingvar P. M.: Phonetic Effects in Swedish Phonology – Allomorphy and Paradigms. University of California (UCLA), Los Angeles. 2010. Dissertation. OCLC 709790819.
  19. ↑ Pelzer, Joppe Anna: "Swedish Diphthongs – A study on the occurrence of diphthongisation in three varieties of Swedish". https://www.fon.hum.uva.nl/archive/2017/2017-BA-JoppePelzer.pdf.  General Linguistics, University of Amsterdam, 2017. MA work. Supervised by Praat program developer, Professor Paul Boersma
  20. ↑ Laine, Unto K.: Studies on modelling of vocal tract acoustics with applications to speech synthesis. Acoustic laboratory, Helsinki University of Technology 1989. Dissertation. OCLC 256226439. Unto Laine, currently professor emeritus at Aalto University.
  21. ↑ Laine, Unto K.; Vilkman, Erkki: Acoustic-mechanical feedback in vocal source-tract interaction. Proceedings of the XIth International Congress of Phonetic Sciences, August 1–7, Tallinn, Estonia, 1987;5:19–22.
  22. ↑ 22.0 22.1 22.2 22.3 22.4 22.5 Leino, Timo: Long-Term Average Spectrum in Screening of Voice Quality in Speech: Untrained Male University Students. Journal of Voice, 2009;23:6:671–676. doi:10.1016/j.jvoice.2008.03.008.
  23. ↑ 23.0 23.1 23.2 23.3 23.4 23.5 Leino, Timo; Laukkanen, Anne-Maria; Radolf, Vojtěch: Formation of the Actor's/Speaker's Formant: A Study Applying Spectrum Analysis and Computer Modeling. Journal of Voice, 2011;25:2:150–158. doi:10.1016/j.jvoice.2009.10.002.
  24. ↑ 24.0 24.1 24.2 24.3 24.4 24.5 Leino, Timo; Laukkanen, Anne-Maria; Ilomäki, Irma; Mäki, Elinita: "Assessment of Vocal Capacity of Finnish University Students". https://www.karger.com/Article/PDF/133651.  Folia Phoniatrica et Logopaedica, 2008;60(4):199–209. doi:10.1159/000133651.
  25. ↑ 25.0 25.1 Pruszewicz, Antoni; Sonninen, Aatto; Toivonen, Raimo; Hurme, Pertti: Komputerowe pole głosowe dla mowy w warunkach fizjologicznych i w niektorych stanach patologicznych (Computer-assisted examination of the vocal field during speech in physiological and various pathological conditions). Otolaryngol Pol, 1988;42:3:193–200. Antoni Pruszewicz, currently professor emeritus in phoniatrics at the University of Poznań. Aatto Sonninen, professor honoris causa of phoniatirics.
  26. ↑ 26.0 26.1 Sonninen, Aatto; Hurme, Pertti; Toivonen, Raimo: Computer Voice Fields in the Study of Normal Phonation. Acta phoniatrica Latina 10, 1988;345–356.
  27. ↑ 27.0 27.1 Sonninen, Aatto; Hurme, Pertti; Pruszewicz, Antoni; Toivonen, Raimo: Computer Voice Field Descriptions of Speech Audiometry Word Lists In: Liber Amicorum: professor P. H. Damsté. On the Occasion of his Retirement by his Friends and Colleagues (L. van Gelder. C. Waar, H. van Wijngaarden, eds.), Utcecht, 1987;45–48. P. H. Damsté.
  28. ↑ 28.0 28.1 Sonninen, Aatto; Vilkman, Erkki; Hurme, Pertti; Toivonen, Raimo: Computer Voice Fields in Basic Phonation Research: Rotation vs. Gliding in Cricothyroid Articulation. In Scandinavian Journal of Logopedics and Phoniatrics 12, 1987;20–28.
  29. ↑ 29.0 29.1 Jaroma, Marjatta; Sonninen, Aatto; Hurme, Pertti; Toivonen, Raimo: Computer Voice Field Observations of Menopausal Dysphonia. Paper presented at the 13th Congress of the European Union of Phoniatricians. Vienna 1986;34–35.
  30. ↑ 30.0 30.1 Sonninen, Aatto; Hurme, Pertti; Toivonen, Raimo; Vilkman, Erkki: Computer Voice Fields of Connected Speech, Symposium on Voice Disorders, Sweden, August 23, 1985.
  31. ↑ 31.0 31.1 Sonninen, Aatto; Hurme, Pertti; Toivonen, Raimo; Vilkman, Erkki: Computer Voice Fields of Connected Speech, Papers in Speech Research, University of Jyväskylä, 6, 1985;93–111. Pertti Hurme, currently professor emeritus at the University of Jyväskylä.
  32. ↑ 32.0 32.1 32.2 Lehessaari, Anna-Liisa; Toivonen, Raimo: "Panorama – Prospect – Profile: On the Computer-Aided Description of Prosodic Quality of Speech". Estonian Academy Publishers. 1998. https://books.google.com/books?id=6x3fLQNMb4kC&q=%22Panorama+-+Prospect+-+Profile%22&pg=PA325.  Proceedings of the Finnic Phonetics Symposium, August 11–14, 1998. Pärnu. Linguistica Uralica, 34:3:325–328. OCLC 248338056.
  33. ↑ 33.0 33.1 Lehessaari, Anna-Liisa; Toivonen, Raimo: "Kuulonmalli: uuden vuosituhannen puheentutkimusta". https://www.pitchsys.fi/Jyvaskyla2001.html.  (Hearing model: speech research in the new millennium). Linguistics days at the University of Jyväskylä 17–19.5.2001.
  34. ↑ 34.0 34.1 Lehessaari, Anna-Liisa; Toivonen, Raimo: "Kuulonmalli: uuden vuosituhannen puheentutkimusta". https://www.pitchsys.fi/Kuulonmalli_uuden_vuosituhannen_puheentutkimusta_2001x.pdf.  (Hearing model: speech research in the new millennium). Vocology, Speech Communication and other Speech Research. A celebration book for Timo Leino. The Department of Speech Communication and Voice Research, University of Tampere. s. 77–83. 2001.
  35. ↑ 35.0 35.1 Sovijärvi, Antti; Aulanko, Reijo: Synthesis of Certain Speech Sounds and Sentence Intonation of Hungarian, Finnish, and Finland-Swedish. Societes Scientiarum Fennica, The finnish Society of Sciences and Letters, Commentations humanarum Litterarum, Vol. 101. 1994. OCLC 468825518. Antti Sovijärvi, professor emeritus at the University of Helsinki.
  36. ↑ 36.0 36.1 36.2 36.3 36.4 36.5 36.6 36.7 36.8 Laukkanen, Anne-Maria; Leino, Timo: Ihmeellinen ihmisääni: äänenkäytön ja puhetekniikan perusteet, arviointi, mittaaminen ja kehittäminen (The Wonderful Human Voice: Fundamentals of Sound Use and Speech Technique, Evaluation, Measurement and Development). Textbook. Helsinki:Gaudeamus, 1999. OCLC 462783918. Anne-Maria Laukkanen, currently professor in vocology at the University of Tampere. Timo Leino was a lecturer at the University of Tampere.
  37. ↑ 37.0 37.1 37.2 Rantala, Leena: "Naisopettajien äänenkäyttö ja äänen kuormittuminen". http://jultika.oulu.fi/files/isbn9514256921.pdf.  (Female teachers’ voice use and voice workload). Acta Universitatis Ouluensis, B Humaniora 37, University of Oulu, 2000. Dissertation. OCLC 58318328. The first Finnish dissertation on teachers' voice workload. Leena Rantala, currently university lecturer at the University of Tampere.
  38. ↑ 38.0 38.1 Rantala, Leena: "Naisopettajien äänen kuormittuminen työssä". https://journal.fi/pk/article/view/8047/6129.  (The voice load of female teachers at work). Puhe ja Kieli 2001;21:2:73–84.
  39. ↑ 39.0 39.1 Sellman, Jaana: Äänen korkeuden ja voimakkuuden vaikutus normaalin ja patologisen naisäänen jitteriin ja shimmeriin (Effect of pitch and volume on the jitter and shimmer of normal and pathological female voice). Master's thesis. Department of Phonetics, University of Helsinki. 1997.
  40. ↑ Vilkman, Erkki: Occupational safety and health aspects of voice and speech professions. Folia Phoniatrica et Logopaedica, 2004;56(4):220–253. doi:10.1159/000078344.
  41. ↑ Ilomäki, Irma: Opettajien ääneen liittyvä työhyvinvointi ja äänikoulutuksen vaikutukset (Teachers' voice-related well-being at work and the effects of voice training). Acta Universitatis Tamperensis 1373. University of Tampere, 2008. Dissertation. OCLC 424172054. Irma Ilomäki, currently Senior University Lecturer at the University of Tampere.
  42. ↑ Laukkanen, Anne-Maria; Ilomäki, Irma; Leppänen, Kirsti; Vilkman, Erkki: Acoustic measures and self-reports of vocal fatigue by female teachers. Journal of Voice, 2008;22:3:283–289. doi:10.1016/j.jvoice.2006.10.001.
  43. ↑ Rantala, Leena; Vilkman, Erkki: Relationship between subjective voice complaints and acoustic parameters in teachers' voice. Journal of Voice, 1999;13:4:484–495. doi:10.1016/S0892-1997(99)80004-6.
  44. ↑ Jónsdóttir, Valdís Ingibjorg: "The Voice An Occupational Tool. Study of Theacher's Classroom Speech and the Effects of Amplification". https://trepo.tuni.fi/bitstream/handle/10024/67327/951-44-5804-4.pdf?sequence=1&isAllowed=y.  Acta Universitatis Tamperensis 969, University of Tampere, 2003. Dissertation. OCLC 938971815. Valdís Ingibjorg Jónsdóttir.
  45. ↑ Valo, Maarit: Radiopuhe: kuuntelijoiden arviointia radiopuhujista ja heidän äänestään (Radio Speech: Listeners' evaluation of speakers on the radio and their voice.). University of Jyväskylä. 1988. Licentiate work. Maarit Valo, currently professor emerita at the University of Jyväskylä.
  46. ↑ Waaramaa-Mäki-Kulmala, Teija: "Emotions in voice. Acoustic and perceptual analysis of voice quality in the vocal expression of emotions". https://trepo.tuni.fi/bitstream/handle/10024/66450/978-951-44-7667-9.pdf?sequence=1&isAllowed=y.  Acta Universitatis Tamperensis 1399. University of Tampere, 2009. Dissertation. OCLC 751506485. Teija Waaramaa-Mäki-Kulmala.
  47. ↑ Waaramaa, Teija; Laukkanen, Anne-Maria; Airas, Matti; Alku, Paavo: Perception of Emotional Valences and Activity Levels from Vowel Segments of Continuous Speech. Journal of Voice, 2010;24:1:30–38. OCLC 501358119. Paavo Alku, currently professor in voice communication technology at Aalto University.
  48. ↑ Lehessaari, Anna-Liisa: Alkoholin vaikutus puheen prosodiikkaan (The Effects of Alcohol in Speech Prosody). University of Helsinki. 1996. Dissertation. OCLC 258287666. The first dissertation in phonetics at the University of Helsinki.
  49. ↑ Toivanen, Juhani: Perspectives on Intonation: English, Finnish and English Spoken by Finns. Volumes 1 and 2. Oulu University Press. 1999. Frankfurt am Main : Lang, 2001. Dissertation. OCLC 231875648. Juhani Toivanen, currently a lecturer in languages at Diakonia University of Applied Sciences.
  50. ↑ Niemi, Tuija: Puhujantunnistus foneettisena ongelmana (Speaker Recognition as a Phonetic Problem). Master's thesis. Department of Phonetics, University of Helsinki. 1994.
  51. ↑ Niemi, Tuija: Puhujantunnistus foneettisena ongelmana (Speaker recognition as a phonetic problem). Publications of the 18th Meeting of Finnish Phoneticians – Tampere 1994. (Michael L. O'Dell, ed.), Folia Fennistica, Linguistica, Department of Finnish language and General Linguistics, University of Tampere, 1995;18:101–116.
  52. ↑ Niemi, Tuija: Segmental durations – A speaker-related charasteristic? Studies in Logopedics and Phonetics 5. Publications of the Department of Phonetics, University of Helsinki, Series B: Phonetics, Logopedics and Speech Communication 1996;6:107–124.
  53. ↑ Leinonen, Kari: "Finlandssvenskt sje-, tje- och s-ljud i kontrastiv belysning". https://jyx.jyu.fi/bitstream/handle/123456789/13466/9513918289.pdf?sequence=1&isAllowed=y.  Jyväskylä Studies In Humanitas 17, University of Jyväskylä. 2004. Dissertation. OCLC 76845272.
  54. ↑ Kaukoranta, Elina; Hari, Riitta; Lounasmaa, Olli: Responses of the human auditory cortex to vowel onset after fricative consonants. Experimental Brain Research. 1987;69:1:19–23. Springer-Verlag. Low Temperature Laboratory, Helsinki University of Technology. doi:10.1007/BF00247025. Academician Riitta Hari, currently professor emerita at Aalto University. Academician Olli Lounasmaa, currently professor emeritus at Helsinki University of Technology.
  55. ↑ Aulanko, Reijo; Sams, Mikko; Reinikainen, Kalevi; Näätänen, Risto: Influence of the second formant transition on the event-related potentials (ERP) elicited by synthetic CV-syllables. Meeting of Finnish Phoneticians – Espoo 1988, Papers from the 15th Meeting of Finnish Phoneticians, (Karjalainen Matti, Laine Unto, eds.). Publications of the TKK Acoustics Laboratory 31, pp. 167–185.
  56. ↑ Aulanko, Reijo: "Puheen havaitsemisen psykofysiologisesta perustasta: formanttitransitioiden havaitseminen". https://www.finna.fi/Record/helka.9917604583506253.  (The psychophysiological basis of speech perception: the detection of formant transitions) Department of Phonetics, University of Helsinki. 1989. Licentiate work.
  57. ↑ Hari, Riitta; Hämäläinen, Matti; Kaukoranta, Elina; Mäkelä, Jyrki; Joutsiniemi, Sirkka-Liisa; Tiihonen, Jari: Selective listening modifies activity of the human auditory cortex. Experimental Brain Research. February 1989;74:3:463–470. Springer-Verlag. Low Temperature Laboratory, Helsinki University of Technology. doi:10.1007/BF00247348. Matti Hämäläinen, currently Professor at the Harvard Medical School and Visiting Professor at Aalto University. Jari Tiihonen, currently Professor at the University of Eastern Finland in Kuopio and at the Karolinska Institute in Stockholm. Jyrki Mäkelä, currently Head of BioMag Laboratory of Helsinki University Central Hospital.
  58. ↑ Sams, Mikko; Aulanko, Reijo; Aaltonen, Olli; Näätänen, Risto: Event-related potentials to infrequent changes in synthesized phonetic stimuli. Journal of Cognitive Neuroscience, 1990;2:4:344–357. doi:10.1162/jocn.1990.2.4.344. Mikko Sams, currently professor at Aalto University. Risto Näätänen, currently member of several academies of science. Olli Aaltonen, currently professor emeritus in phonetics at Aalto University.
  59. ↑ Aulanko, Reijo; Hari, Riitta; Lounasmaa, Olli; Näätänen, Risto; Sams, Mikko: Phonetic invariance in the human auditory cortex. Cognitive Neuroscience and Neuropsychology. Neuroreport, 1993;4:12:1356–1358. Low Temperature Laboratory, Helsinki University of Technology. doi:10.1097/00001756-199309150-00018.
  60. ↑ Laukkanen, Anne-Maria: On speaking voice exercises – a study on the acoustic and physiological effects of speaking voice exercises applying manipulation of the acoustic-aerodynamic state of the supraglottic space and artificially modified auditory feedback. Acta Universitatis Tamperensis ser A vol. 445. University of Tampere, 1995, Dissertation. OCLC 472961368.
  61. ↑ Laukkanen, Anne-Maria: Emotionaaliseen painotukseen liittyvistä akustisista ja aerodynaamisista muuttujista, käänteissuodatusmenetelmää soveltava tutkimus (Study of acoustic and aerodynamic variables related to emotional weighting, applying the reverse filtering method). Department of Phonetics, University of Helsinki, 1992, Licentiate work.
  62. ↑ Laukkanen Anne-Maria: About the so called "resonance tubes" used in Finnish of this voice training practice. An electroglottographic and acoustic investigation on the effects method on the voice quality of subjects with normal voice. Scandinavian Journal of Logopedics and Phoniatrics, 1992;17:3-4:151–161. doi:10.3109/14015439209098733.
  63. ↑ Kankare, Elina: "Elektroglottografia (EGG) äänen laadun tutkimuksessa funktionaalisesti terveäänisillä puhujilla. Vertaileva tutkimus EGGn sekä akustisen, perkeptuaalisen ja laryngoskopiatutkimuksen välillä lastentarhanopettajilla". https://trepo.tuni.fi/bitstream/handle/10024/95376/978-951-44-9457-4.pdf?sequence=1.  Acta Universitatis Tamperensis 1937. University of Tampere, 2014. Dissertation. ISBN:978-951-44-9457-4.
  64. ↑ Löppönen, Heikki: High-frequency electric bone-conduction audiometry, Psychoacoustic and accelometric studies. Acta universitatis Ouluensis series D Medica 228. 1991. Dissertation. Heikki Löppönen, currently professor in audiology at the University of Eastern Finland. OCLC 26766965.
  65. ↑ Löppönen, Heikki; Laitakari, Kyösti; Sorri, Martti: High-frequency Audiometry: Accelometric Findings with Electric Bone-conduction Audiometry. Scand Audiol 1991;20:61–67. doi:10.3109/01050399109070792. Martti Sorri, currently professor emeritus at the University of Oulu. Kyösti Laitakari.
  66. ↑ Nieminen, Rauno Esa: Ikaalisissa soitinäänten johtava tutkmuspaikka (In Ikaalinen, the leading research venue for instrumental sounds). In the North Satakunta newspaper on January 22, 1988.
  67. ↑ Nieminen, Rauno Esa: Soitinakustiikkaa Ikaalisissa. Apple Uutiset 2/1988 (Instrumental acoustics in Ikaalinen. Apple news, 2/1988).
  68. ↑ Nieminen, Rauno Esa: Ikaalisissa kanteleen ja kitaran johtavaa tutkimusta (In Ikaalinen, the leading research in kantele and guitar). In the North Satakunta newspaper on February 6, 1992.

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