Speaker-dependent automatic helium speech normalisation

Previous attempts to solving helium speech problem were oriented towards development of a helium speech production model. The aim was to obtain straightforward transformations which could be applied to helium speech, or its parametric representation, in order to obtain normal speech. However it has...

Full description

Saved in:
Bibliographic Details
Published inICECS 2000. 7th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.00EX445) Vol. 1; pp. 282 - 285 vol.1
Main Authors Podhorski, A., Sawicki, J., Brykalski, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2000
Subjects
Acoustic distortion
Bandwidth
Blood
Computer science
Frequency diversity
Helium
Loudspeakers
Nitrogen
Nonlinear distortion
Speech
Online AccessGet full text

Cover

More Information
Summary:Previous attempts to solving helium speech problem were oriented towards development of a helium speech production model. The aim was to obtain straightforward transformations which could be applied to helium speech, or its parametric representation, in order to obtain normal speech. However it has never been investigated if the poor quality of the resulting speech might be due to speaker dependance of voice distortion. This paper presents a non-model based approach in which all transformations are automatically calculated from formant parameters and F/sub 0/ extracted directly from the normal and helium speech signals of the same speaker. Results show considerable differences among speakers in the distortion of formant frequencies, bandwidths and amplitudes and a large depth-uncorrelated variation of F/sub 0/. The proposed unscrambling system results in a more natural and more intelligible sounding speech and it also allows to observe adaptation of divers to the pressurized helium environment over time.
ISBN:0780365429
9780780365421
DOI:10.1109/ICECS.2000.911537