Characteristics of Two-Dimensional Finite Difference Techniques for Vocal Tract Analysis and Voice Synthesis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Publication details

Title of host publicationINTERSPEECH 2009: 10TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION 2009
DatePublished - 2009
Pages768-771
Number of pages4
PublisherISCA-INST SPEECH COMMUNICATION ASSOC
Place of PublicationBAIXAS
Volume1-5
Original languageEnglish
ISBN (Print)978-1-61567-692-7

Abstract

Both digital waveguide and finite difference techniques are numerical methods that have been demonstrated as appropriate for acoustic modelling applications. Whilst the application of the digital waveguide mesh to vocal tract modelling has been the subject of previous work, the application of comparable finite difference techniques is as yet untested. This study explores the characteristics of such a finite-difference approach to two-dimensional vocal tract modelling. Initial results suggest that finite difference techniques alone are not ideal, due to the limitation of non-dynamic behaviour and poor representation of admittance discontinuities in the approximation of three-dimensional geometries. They do however introduce robust boundary formulations, and have a valid and useful application in modelling non-vital static volumes, particularly the nasal tract.

    Research areas

  • vocal tract, finite difference time domain, computation, acoustic, simulation, WAVE-GUIDE MESH

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