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- W4247489782 abstract "We simulated the effect of several automatic gain control (AGC) and AGC-like systems and head movement on the output levels, and resulting interaural level differences (ILDs) produced by bilateral cochlear-implant (CI) processors. The simulated AGC systems included unlinked AGCs with a range of parameter settings, linked AGCs, and two proprietary multi-channel systems used in contemporary CIs. The results show that over the range of values used clinically, the parameters that most strongly affect dynamic ILDs are the release time and compression ratio. Linking AGCs preserves ILDs at the expense of monaural level changes and, possibly, comfortable listening level. Multichannel AGCs can whiten output spectra, and/or distort the dynamic changes in ILD that occur during and after head movement. We propose that an unlinked compressor with a ratio of approximately 3:1 and a release time of 300-500 ms can preserve the shape of dynamic ILDs, without causing large spectral distortions or sacrificing listening comfort." @default.
- W4247489782 created "2022-05-12" @default.
- W4247489782 creator A5041479291 @default.
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- W4247489782 date "2021-05-26" @default.
- W4247489782 modified "2023-09-27" @default.
- W4247489782 title "Further simulations of the effect of cochlear-implant pre-processing and head movement on interaural level differences" @default.
- W4247489782 doi "https://doi.org/10.31234/osf.io/zje8c" @default.
- W4247489782 hasPublicationYear "2021" @default.
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