Frequency-domain representation of source-filter coupling and its effect in the production of voice

Research output: Contribution to journalConference article

Abstract

The acoustic coupling between the voice production system and the vocal tract has a significant influence on the production of voice. In this study, the coupling effect was represented using the acoustic pressure difference across the glottis, which is capable of inducing a flow, and the mean acoustic pressure in the glottis, which acts as a driving force for the vocal folds. These specific acoustic pressures were then interpreted in the frequency domain in the form of frequency responses, and incorporated into a model of the voice production system. In this framework, we were able to test the effect of source-filter coupling by filtering frequency responses. Numerical results revealed that these responses and the input impedance of the vocal tract both exhibited a dominant peak around 4 kHz. In addition, voice production simulations revealed that this high-frequency peak has a significant influence on the spatio-temporal pattern of glottal volume flow and vocal fold movements.

Original languageEnglish
Pages (from-to)2689-2692
Number of pages4
JournalProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
Publication statusPublished - Dec 1 2011
Event12th Annual Conference of the International Speech Communication Association, INTERSPEECH 2011 - Florence, Italy
Duration: Aug 27 2011Aug 31 2011

Fingerprint

Frequency Domain
Acoustics
acoustics
Filter
filter
Production Systems
Frequency Response
production system
Frequency response
Fold
fold
Spatio-temporal Patterns
Driving Force
Impedance
Filtering
Numerical Results
Voice
effect
simulation
Simulation

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modelling and Simulation

Cite this

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abstract = "The acoustic coupling between the voice production system and the vocal tract has a significant influence on the production of voice. In this study, the coupling effect was represented using the acoustic pressure difference across the glottis, which is capable of inducing a flow, and the mean acoustic pressure in the glottis, which acts as a driving force for the vocal folds. These specific acoustic pressures were then interpreted in the frequency domain in the form of frequency responses, and incorporated into a model of the voice production system. In this framework, we were able to test the effect of source-filter coupling by filtering frequency responses. Numerical results revealed that these responses and the input impedance of the vocal tract both exhibited a dominant peak around 4 kHz. In addition, voice production simulations revealed that this high-frequency peak has a significant influence on the spatio-temporal pattern of glottal volume flow and vocal fold movements.",
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