In bimodal cochlear implant (CI) / hearing aid (HA) users a constant interaural time
delay in the order of several milliseconds occurs due to differences in signal processing
of the devices. For MED-EL CI systems in combination with different HA types, we have
quantified the respective device delay mismatch (Zirn et al. 2015). In the current
study, we investigate the effect of the device delay mismatch in simulated and actual
bimodal listeners on sound localization accuracy.
To deal with the device delay mismatch in actual bimodal listeners we delayed the
CI stimulation according to the measured HA processing delay and two other values.
With all delay values highly significant improvements of the rms error in the localization
task were observed compared to the test without the delay. The results help to narrow
down the optimal patient-specific delay value.
Poster-PDF
A-1323.pdf
MED-EL
