Title :
Effect of fast AGC on cochlear implant speech intelligibility
Author :
Khing, Phyu P. ; Ambikairajah, Eliathamby ; Swanson, Brett A.
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
This study investigated the effect of fast-acting Automatic Gain Control (AGC) on the speech intelligibility of cochlear implant users as a function of presentation level. Both low and high signal-to-noise ratio conditions were investigated. The AGC substantially reduced the amount of clipping, but did not give consistent improvements in intelligibility. With no AGC, and high signal-to-noise ratio, speech scores were not significantly degraded until more than 25% of stimulation pulses were affected by clipping.
Keywords :
automatic gain control; cochlear implants; speech intelligibility; automatic gain control; cochlear implant speech intelligibility; cochlear implant user; signal-to-noise ratio conditions; speech scores; Cochlear implants; Degradation; Dynamic range; Gain control; Signal to noise ratio; Speech; Automatic Gain Control; cochlear implant; compression; speech intelligibility;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2011.5946396
