Measuring access to high-modulation-rate envelope speech cues in clinically fitted auditory prostheses

The signal processing used to increase intelligibility within the hearing-impaired listener introduces distortions in the modulation patterns of a signal. Trade-offs have to be made between improved audibility and the loss of fidelity. Acoustic hearing impairment can cause reduced access to temporal...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2020-02, Vol.147 (2), p.1284-1301
Main Authors: Stone, Michael A., Prendergast, Garreth, Canavan, Shanelle
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The signal processing used to increase intelligibility within the hearing-impaired listener introduces distortions in the modulation patterns of a signal. Trade-offs have to be made between improved audibility and the loss of fidelity. Acoustic hearing impairment can cause reduced access to temporal fine structure (TFS), while cochlear implant processing, used to treat profound hearing impairment, has reduced ability to convey TFS, hence forcing greater reliance on modulation cues. Target speech mixed with a competing talker was split into 8–22 frequency channels. From each channel, separate low-rate (EmodL,
ISSN:0001-4966
1520-8524
DOI:10.1121/10.0000673