A modified speech enhancement algorithm for electronic cochlear implant and its digital signal processing realization / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 742-754, 2014.
Article
de Zh
| WPRIM
| ID: wpr-290682
Bibliothèque responsable:
WPRO
ABSTRACT
In order to improve the speech quality and auditory perceptiveness of electronic cochlear implant under strong noise background, a speech enhancement system used for electronic cochlear implant front-end was constructed. Taking digital signal processing (DSP) as the core, the system combines its multi-channel buffered serial port (McBSP) data transmission channel with extended audio interface chip TLV320AIC10, so speech signal acquisition and output with high speed are realized. Meanwhile, due to the traditional speech enhancement method which has the problems as bad adaptability, slow convergence speed and big steady-state error, versiera function and de-correlation principle were used to improve the existing adaptive filtering algorithm, which effectively enhanced the quality of voice communications. Test results verified the stability of the system and the de-noising performance of the algorithm, and it also proved that they could provide clearer speech signals for the deaf or tinnitus patients.
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Parole
/
Perception de la parole
/
Algorithmes
/
Traitement du signal assisté par ordinateur
/
Implants cochléaires
/
Implantation cochléaire
/
Électronique
/
Bruit
Type d'étude:
Prognostic_studies
Limites du sujet:
Humans
langue:
Zh
Texte intégral:
Journal of Biomedical Engineering
Année:
2014
Type:
Article