The behaviour of non-linear (WDRC) hearinginstruments under realistic simulated listening conditions
2000 (English)Report (Other academic)
This work attempts to illustrate some important practical consequences of the characteristics of nonlinear wide dynamic range compression (WDRC) hearing instruments in common conversational listening situations. Corresponding input and output signal are recorded simultaneously, using test signals consisting of conversation between a hearing aid wearer and a nonhearing aid wearer in two different listening situations, quiet and outdoors in fluctuating traffic noise. The effective insertion gain frequency response is displayed for each of the two voice sources in each of the simulated listening situations. The effective compression is also illustrated showing the gain adaptation between two alternating voice sources and the slow adaptation to changing overall acoustic conditions. These nonlinear effects are exemplified using four commercially available hearing instruments. Three of the hearing aids are digital and one is analogue.
Place, publisher, year, edition, pages
, TMH-QPSR, 41, 2-3
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-13347OAI: oai:DiVA.org:kth-13347DiVA: diva2:324135
QC 201006142010-06-142010-06-142010-06-14Bibliographically approved