PITCH-ASYNCHRONOUS GLOTTAL INVERSE FILTERING OF NORMAL AND PATHOLOGICAL VOICES BASED ON HOMOMORPHIC PREDICTION

Rubén Fraile, Malte Kob, Juana M. Gutierrez, Nicolás Sáenz-Lechón, Juan Ignacio Godino-Llorente, Víctor Osma-Ruiz

2010

Abstract

Inverse filtering of speech signals for the separation of vocal tract and glottal source effects has a wide variety of potential applications, including the assessment of glottis-related aspects of voice function. Among all existing approaches to inverse filtering, this paper focuses on homomorphic prediction. While not favoured much by researchers in recent literature, such an approach offers two advantages over others: it does not require previous estimation of the fundamental frequency and it does not rely on any assumptions about the spectral enevelope of the glottal signal. The performance of homomorphic prediction is herein assessed and compared to that of an adaptive inverse filtering method making use of synthetic voices produced with a biomechanical voice production model. The reported results indicate that the performance of inverse filtering based on homomorphic prediction is within the range of that of adaptive inverse filtering and, at the same time, it has a better behaviour when the spectral envelope of the glottal signal does not suit an all-pole model of predefined order.

Paper Citation

in Harvard Style

Fraile R., Kob M., M. Gutierrez J., Sáenz-Lechón N., Ignacio Godino-Llorente J. and Osma-Ruiz V. (2010). PITCH-ASYNCHRONOUS GLOTTAL INVERSE FILTERING OF NORMAL AND PATHOLOGICAL VOICES BASED ON HOMOMORPHIC PREDICTION . In Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010) ISBN 978-989-674-018-4, pages 45-52. DOI: 10.5220/0002699300450052

in Bibtex Style

@conference{biosignals10,
author={Rubén Fraile and Malte Kob and Juana M. Gutierrez and Nicolás Sáenz-Lechón and Juan Ignacio Godino-Llorente and Víctor Osma-Ruiz},
title={PITCH-ASYNCHRONOUS GLOTTAL INVERSE FILTERING OF NORMAL AND PATHOLOGICAL VOICES BASED ON HOMOMORPHIC PREDICTION},
booktitle={Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)},
year={2010},
pages={45-52},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002699300450052},
isbn={978-989-674-018-4},
}

in EndNote Style

TY - CONF
JO - Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)
TI - PITCH-ASYNCHRONOUS GLOTTAL INVERSE FILTERING OF NORMAL AND PATHOLOGICAL VOICES BASED ON HOMOMORPHIC PREDICTION
SN - 978-989-674-018-4
AU - Fraile R.
AU - Kob M.
AU - M. Gutierrez J.
AU - Sáenz-Lechón N.
AU - Ignacio Godino-Llorente J.
AU - Osma-Ruiz V.
PY - 2010
SP - 45
EP - 52
DO - 10.5220/0002699300450052