TY - GEN
T1 - Effect of adaptive envelope compression in simulated electric hearing in reverberation
AU - Lai, Ying Hui
AU - Chen, Fei
AU - Tsao, Yu
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/2/2
Y1 - 2015/2/2
N2 - The narrow dynamic range for speech perception partially accounts for the poor speech understanding abilities of hearing-impaired patients fitted with cochlear implants, particularly in challenging listening conditions, e.g., in reverberation. Wide dynamic range compression is designed to compress speech signal into the usable hearing dynamic range of implanted patients; however, it normally uses a static compression based strategy. An adaptive envelope compression (AEC) strategy was recently proposed for speech processing in cochlear implants. It implemented the envelope compression as close to linear as possible, while confined the compressed amplitude envelope within the pre-set dynamic range. This study further assessed its effect to improve speech perception in reverberation. Vocoder simulation experiment showed that, when narrowed down to a small dynamic range, the AEC-processed sentences could yield a higher intelligibility score in reverberation than the static compression processed sentences.
AB - The narrow dynamic range for speech perception partially accounts for the poor speech understanding abilities of hearing-impaired patients fitted with cochlear implants, particularly in challenging listening conditions, e.g., in reverberation. Wide dynamic range compression is designed to compress speech signal into the usable hearing dynamic range of implanted patients; however, it normally uses a static compression based strategy. An adaptive envelope compression (AEC) strategy was recently proposed for speech processing in cochlear implants. It implemented the envelope compression as close to linear as possible, while confined the compressed amplitude envelope within the pre-set dynamic range. This study further assessed its effect to improve speech perception in reverberation. Vocoder simulation experiment showed that, when narrowed down to a small dynamic range, the AEC-processed sentences could yield a higher intelligibility score in reverberation than the static compression processed sentences.
KW - adaptive envelope compression
KW - cochlear implants
KW - dynamic range
KW - vocoder simulation
UR - http://www.scopus.com/inward/record.url?scp=84924301156&partnerID=8YFLogxK
U2 - 10.1109/ISICIR.2014.7029564
DO - 10.1109/ISICIR.2014.7029564
M3 - Conference contribution
AN - SCOPUS:84924301156
T3 - Proceedings of the 14th International Symposium on Integrated Circuits, ISIC 2014
SP - 204
EP - 207
BT - Proceedings of the 14th International Symposium on Integrated Circuits, ISIC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th International Symposium on Integrated Circuits, ISIC 2014
Y2 - 10 December 2014 through 12 December 2014
ER -