Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement
This paper describes a new speech enhancement approach using perceptually based noise reduction. The proposed approach is based on the application of two perceptual filtering models to noisy speech signals: the gammatone and the gammachirp filter banks with nonlinear resolution according to the equi...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/282019 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567375940026368 |
|---|---|
| author | Novlene Zoghlami Zied Lachiri |
| author_facet | Novlene Zoghlami Zied Lachiri |
| author_sort | Novlene Zoghlami |
| collection | DOAJ |
| description | This paper describes a new speech enhancement approach using perceptually based noise reduction. The proposed approach is based on the application of two perceptual filtering models to noisy speech signals: the gammatone and the gammachirp filter banks with nonlinear resolution according to the equivalent rectangular bandwidth (ERB) scale. The perceptual filtering gives a number of subbands that are individually spectral weighted and modified according to two different noise suppression rules. The importance of an accurate noise estimate is related to the reduction of the musical noise artifacts in the processed speech that appears after classic subtractive process. In this context, we use continuous noise estimation algorithms. The performance of the proposed approach is evaluated on speech signals corrupted by real-world noises. Using objective tests based on the perceptual quality PESQ score and the quality rating of signal distortion (SIG), noise distortion (BAK) and overall quality (OVRL), and subjective test based on the quality rating of automatic speech recognition (ASR), we demonstrate that our speech enhancement approach using filter banks modeling the human auditory system outperforms the conventional spectral modification algorithms to improve quality and intelligibility of the enhanced speech signal. |
| format | Article |
| id | doaj-art-75f72552551d4586aef949d7897afc7a |
| institution | Kabale University |
| issn | 2090-0147 2090-0155 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Electrical and Computer Engineering |
| spelling | doaj-art-75f72552551d4586aef949d7897afc7a2025-02-03T01:01:40ZengWileyJournal of Electrical and Computer Engineering2090-01472090-01552012-01-01201210.1155/2012/282019282019Application of Perceptual Filtering Models to Noisy Speech Signals EnhancementNovlene Zoghlami0Zied Lachiri1LRSITI, Département Génie Electrique, Ecole Nationale des Ingénieurs de Tunis, BP 37, 1002 Le Belvédère, TunisiaLRSITI, Département Génie Electrique, Ecole Nationale des Ingénieurs de Tunis, BP 37, 1002 Le Belvédère, TunisiaThis paper describes a new speech enhancement approach using perceptually based noise reduction. The proposed approach is based on the application of two perceptual filtering models to noisy speech signals: the gammatone and the gammachirp filter banks with nonlinear resolution according to the equivalent rectangular bandwidth (ERB) scale. The perceptual filtering gives a number of subbands that are individually spectral weighted and modified according to two different noise suppression rules. The importance of an accurate noise estimate is related to the reduction of the musical noise artifacts in the processed speech that appears after classic subtractive process. In this context, we use continuous noise estimation algorithms. The performance of the proposed approach is evaluated on speech signals corrupted by real-world noises. Using objective tests based on the perceptual quality PESQ score and the quality rating of signal distortion (SIG), noise distortion (BAK) and overall quality (OVRL), and subjective test based on the quality rating of automatic speech recognition (ASR), we demonstrate that our speech enhancement approach using filter banks modeling the human auditory system outperforms the conventional spectral modification algorithms to improve quality and intelligibility of the enhanced speech signal.http://dx.doi.org/10.1155/2012/282019 |
| spellingShingle | Novlene Zoghlami Zied Lachiri Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement Journal of Electrical and Computer Engineering |
| title | Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement |
| title_full | Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement |
| title_fullStr | Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement |
| title_full_unstemmed | Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement |
| title_short | Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement |
| title_sort | application of perceptual filtering models to noisy speech signals enhancement |
| url | http://dx.doi.org/10.1155/2012/282019 |
| work_keys_str_mv | AT novlenezoghlami applicationofperceptualfilteringmodelstonoisyspeechsignalsenhancement AT ziedlachiri applicationofperceptualfilteringmodelstonoisyspeechsignalsenhancement |