Abstract
A warped filter is presented as a new speech enhancement method to adjust formant bandwidths on a critical band scale. The warped filter enhances perceived loudness without adding signal energy by exploiting the psychoacoustic nature of the auditory system. The critical band concept in auditory theory states that when the energy in a signal remains constant, loudness increases when the energy spreads beyond a critical bandwidth. A warped filter is proposed and developed to elevate the perceived loudness of clean speech by applying non-linear bandwidth expansion to the formant regions of vowels in accordance with the critical band scale. The filter has been inspired and motivated by the biological representation of loudness in the peripheral auditory system and the critical band concept of hearing. © 2005 IEEE.
Recommended Citation
M. A. Boillot and J. G. Harris, "A Warped Bandwidth Expansion Filter," ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings, vol. I, pp. I65 - I68, article no. 1415051, Institute of Electrical and Electronics Engineers, Jan 2005.
The definitive version is available at https://doi.org/10.1109/ICASSP.2005.1415051
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-078038874-1
International Standard Serial Number (ISSN)
1520-6149
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2005
