Bibliografické údaje¶
| Název | Noise Reduction of Recorded Speech in an NMR Imaginer during Phonation for 3D Vocal Tract Modeling |
| Autor | Přibil, J., Horáček, J., Horák, P., Frollo, I. |
| Typ publikace | Článek ve sborníku |
| Sborník | Proceedings of the 8th International Conference MEASUREMENT 2011 |
| Místo konání | Smolenice Castle, Slovak Republic |
| Strana | 364-367 |
| Rok | 2011 |
| ISBN | 978-80-969672-4-7 |
Abstrakt¶
The paper presents two methods of noise reduction of recorded speech signal during phonation for the human vocal tract modeling in an NMR imaginer. The noise is mainly produced by gradient coils, have a mechanical character, and can be processed in spectral domain. Our first noise reduction method use real cepstrum limitation and clipping the “peaks” corresponding to the harmonic frequencies of mechanical noise. The second method is coming out from substation of the short-time spectra of two signals recorded withal: the first includes speech and noise, and the second is consisted of the noise only.