Effect of audibility on spatial release from speech-on-speech masking

Helen Glyde, Jörg M. Buchholz, Lillian Nielsen, Virginia Best, Harvey Dillon, Sharon Cameron, Louise Hickson

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This study investigated to what extent spatial release from masking (SRM) deficits in hearing-impaired adults may be related to reduced audibility of the test stimuli. Sixteen adults with sensorineural hearing loss and 28 adults with normal hearing were assessed on the Listening in Spatialized Noise-Sentences test, which measures SRM using a symmetric speech-on-speech masking task. Stimuli for the hearing-impaired listeners were delivered using three amplification levels (National Acoustic Laboratories - Revised Profound prescription (NAL-RP) +25%, and NAL-RP +50%), while stimuli for the normal-hearing group were filtered to achieve matched audibility. SRM increased as audibility increased for all participants. Thus, it is concluded that reduced audibility of stimuli may be a significant factor in hearing-impaired adults' reduced SRM even when hearing loss is compensated for with linear gain. However, the SRM achieved by the normal hearers with simulated audibility loss was still significantly greater than that achieved by hearing-impaired listeners, suggesting other factors besides audibility may still play a role.

Original languageEnglish
Pages (from-to)3311-3319
Number of pages9
JournalJournal of the Acoustical Society of America
Volume138
Issue number5
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint Dive into the research topics of 'Effect of audibility on spatial release from speech-on-speech masking'. Together they form a unique fingerprint.

Cite this