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        <title>Neural Network-assisted Analysis of Tube Vocal Tract Models</title>
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    <abstract>We present a pipeline for deep neural network assisted modeling and analysis of the behavior of an acoustic tube. The vocal tract is represented as a series of cylindrical tube segments, each characterized by fixed length and variable cross-sectional area. A large synthetic dataset of such tube configurations is generated, and a circuit theory–based algorithm predicts corresponding formant frequencies. To explore mapping between vocal tract shapes and formant values, the pipeline integrates both linear regression and nonlinear machine learning models - including multilayer perceptrons. Model interpretability is measured using Shapley Additive Explanations (SHAP), which quantifies the contribution of each segment to predicted formant frequencies. The proposed framework enables detailed exploration of the articulatory-acoustic relationships inherent to an acoustic tube and vocal tract simulacrum. We present and describe the pipeline in the context of modeling effects of perturbations on the first three formants for a 16-cm tube, divided into 1 cm segments. Our pipeline can be applied to any method that models predictions of behavior of an acoustic tube, where the tube is conceived as a series of segmented units.</abstract>
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%0 Conference Proceedings
%T Neural Network-assisted Analysis of Tube Vocal Tract Models
%A Song, Runhui
%A Sjons, Johan
%A Ekstrom, Axel G.
%Y Piperidis, Stelios
%Y Bel, Núria
%Y van den Heuvel, Henk
%Y Ide, Nancy
%Y Krek, Simon
%Y Toral, Antonio
%S Proceedings of the Fifteenth Language Resources and Evaluation Conference
%D 2026
%8 May
%I ELRA Language Resource Association
%C Palma de Mallorca, Spain
%F song-etal-2026-neural
%X We present a pipeline for deep neural network assisted modeling and analysis of the behavior of an acoustic tube. The vocal tract is represented as a series of cylindrical tube segments, each characterized by fixed length and variable cross-sectional area. A large synthetic dataset of such tube configurations is generated, and a circuit theory–based algorithm predicts corresponding formant frequencies. To explore mapping between vocal tract shapes and formant values, the pipeline integrates both linear regression and nonlinear machine learning models - including multilayer perceptrons. Model interpretability is measured using Shapley Additive Explanations (SHAP), which quantifies the contribution of each segment to predicted formant frequencies. The proposed framework enables detailed exploration of the articulatory-acoustic relationships inherent to an acoustic tube and vocal tract simulacrum. We present and describe the pipeline in the context of modeling effects of perturbations on the first three formants for a 16-cm tube, divided into 1 cm segments. Our pipeline can be applied to any method that models predictions of behavior of an acoustic tube, where the tube is conceived as a series of segmented units.
%R 10.63317/3qp8kma6ohov
%U https://aclanthology.org/2026.lrec-1.47/
%U https://doi.org/10.63317/3qp8kma6ohov
%P 654-663

Markdown (Informal)

[Neural Network-assisted Analysis of Tube Vocal Tract Models](https://aclanthology.org/2026.lrec-1.47/) (Song et al., LREC 2026)

• Neural Network-assisted Analysis of Tube Vocal Tract Models (Song et al., LREC 2026)

ACL

• Runhui Song, Johan Sjons, and Axel G. Ekstrom. 2026. Neural Network-assisted Analysis of Tube Vocal Tract Models. In Proceedings of the Fifteenth Language Resources and Evaluation Conference, pages 654–663, Palma de Mallorca, Spain. ELRA Language Resource Association.