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Author:Palo, Pertti
Title:A wave equation model for vowels: Measurements for validation
Aaltoyhtälömalli vokaaleille; Mittauksia validointia varten
Publication type:Licentiate thesis
Publication year:2011
Pages:88      Language:   eng
Department/School:Matematiikan ja systeemianalyysin laitos
Main subject:Matematiikka   (Mat-1)
Supervisor:Eirola, Timo
Instructor:Malinen, Jarmo
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  52   | Archive
Keywords:articulatory speech synthesis
FEM
finite element method
MRI
speech recording in noise
speech recording in MRI
vowel synthesis
wave equation
aaltoyhtälö
artikulatorinen puhesynteesi
elementtimenetelmä
FEM
MRI
puheen äänitys melussa
puheen äänitys MRI:ssä
vokaalisynteesi
Abstract (eng): This thesis presents a procedure for simultaneous recording of anatomic and acoustic data on speech production.
The thesis also presents a mathematical model of vowel production and its pilot implementation as frequency domain numerical simulator.
The model is based on the wave equation.

The anatomic data is recorded with MRI and the acoustic data with a purpose built, MRI compatible sound recording setup.
Both modalities of the data will be used in building the next generation of the simulator, estimating its parameters, and validating it.
Compared with previous contributions in this area, the acoustic and anatomic data are more closely matched and, hence, the procedure more informative.
The main scientific contribution is the description of the sound recording arrangement as well as the guidelines and considerations detailed for simultaneous data acquisition in MRI.
Abstract (fin): Tämä työ esittelee järjestelmän, jolla voidaan kerätä yhtäaikaista akustista ja anatomista dataa puheen tuotosta.
Työ esittelee myös vokaalituoton matemaattisen mallin ja tämän mallin pilottitoteutuksen numeerisena resonanssisimulaattorina.
Malli perustuu aaltoyhtälöön.

Anatominen data kerätään MRI:lla ja akustinen data erikseen tätä tarkoitusta varten rakennetulla äänitysjärjestelmällä.
Dataa käytetään seuraavan simulaattorisukupolven rakentamisessa, sen parametrien estimoimisessa ja validoinnissa.
Verrattuna aiempiin vastaaviin järjestelmiin, akustinen ja anatominen data vastaavat tarkemmin toisiaan ja siksi data on informatiivisempaa.
Tärkein tieteellinen anti on äänitysjärjestelmän kuvaus sekä suositukset ja huomiot yhtäaikaisesta datankeruusta MRI:n aikana.
ED:2011-07-01
INSSI record number: 42590
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