Speech Enhancement in Functional MRI Environment using Adaptive Sub-Band Algorithms

Author

Ramachandran, Vignesh R. ; Kannan, G. ; Milani, Alireza A. ; Panahi, Issa M. S.

Author_Institution

Dept. of Electr. Eng., Texas Univ., Richardson, TX, USA

Volume

2

fYear

2007

fDate

15-20 April 2007

Abstract

Very high level of acoustic noise in fMRI scanner rooms disrupts speech communication between the subject and the physician/researcher. Enhancing speech in such an environment is challenging due to the broadband and dynamic nature of the noise. Sub-band adaptive methods prove to be very effective in cancelling such noise. In this paper we present the results of using sub-band adaptive methods for enhancing speech corrupted by noise from a 3-Tesla fMRI scanner. We also observe that the performance depends on the synthesis filter bank structure.

Keywords

acoustic noise; architectural acoustics; biomedical MRI; channel bank filters; interference suppression; speech enhancement; 3-Tesla fMRI scanner; acoustic noise cancellation; adaptive sub-band algorithms; fMRI scanner rooms; functional MRI environment; speech communication; speech enhancement; synthesis filter bank structure; Acoustic noise; Adaptive algorithm; Adaptive filters; Least squares approximation; Magnetic noise; Magnetic resonance imaging; Noise cancellation; Speech enhancement; Speech synthesis; Working environment noise; Speech enhancement; functional magnetic resonance imaging; sub-band algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on

Conference_Location

Honolulu, HI

ISSN

1520-6149

Print_ISBN

1-4244-0727-3

Type

conf

DOI

10.1109/ICASSP.2007.366242

Filename

4217415