Open AccessLimitations of the Envelope Difference Index as a Metric for Nonlinear Distortion in Hearing Aids
Author(s) -
James M. Kates
Publication year - 2019
Publication title -
ear and hearing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.577
H-Index - 109
eISSN - 1538-4667
pISSN - 0196-0202
DOI - 10.1097/aud.0000000000000768
Subject(s) - audiogram , nonlinear distortion , distortion (music) , nonlinear system , clipping (morphology) , dynamic range , intermodulation , signal processing , signal compression , computer science , acoustics , metric (unit) , mathematics , speech recognition , telecommunications , bandwidth (computing) , physics , engineering , computer vision , hearing loss , radar , quantum mechanics , medicine , amplifier , linguistics , philosophy , operations management , audiology
The envelope difference index (EDI) compares the envelopes of two signals. It has been used to measure nonlinear distortion in hearing aids, but it also responds to linear processing. This article compares linear and nonlinear processing effects on the EDI.