PMID- 9638921
OWN - NLM
STAT- MEDLINE
DCOM- 19981008
LR  - 20220310
IS  - 1092-4388 (Print)
IS  - 1092-4388 (Linking)
VI  - 41
IP  - 3
DP  - 1998 Jun
TI  - The effects of hearing loss and noise masking on the masking release for speech 
      in temporally complex backgrounds.
PG  - 549-63
AB  - Speech recognition was measured in three groups of listeners: those with 
      sensorineural hearing loss of (presumably) cochlear origin (HL), those with 
      normal hearing (NH), and those with normal hearing who listened in the presence 
      of a spectrally shaped noise that elevated their pure-tone thresholds to match 
      those of individual listeners in the HL group (NM). Performance was measured in 
      four backgrounds that differed only in their temporal envelope: steady-state (SS) 
      speech-shaped noise, speech-shaped noise modulated by the envelope of 
      multi-talker babble (MT), speech-shaped noise modulated by the envelope of 
      single-talker speech (ST), and speech-shaped noise modulated by a 10-Hz square 
      wave (SQ). Threshold signal-to-noise ratios (SNRs) were typically best in the ST 
      and especially the SQ conditions, indicating a masking release in those modulated 
      backgrounds. SNRs in the SS and MT conditions were essentially identical to one 
      another. The masking release was largest in the listeners in the NH group, and it 
      tended to decrease as hearing loss increased. In 5 of the 11 listeners in the HL 
      group, the masking release was nearly identical to that obtained in the NM group 
      matched to those listeners; in the other 6 listeners, the release was smaller 
      than that in the NM group. The reduced masking release was simulated best in 
      those HL listeners for whom the masking release was relatively large. These 
      results suggest that reduced masking release for speech in listeners with 
      sensorineural hearing loss can only sometimes be accounted for entirely by 
      reduced audibility.
FAU - Bacon, S P
AU  - Bacon SP
AD  - Department of Speech and Hearing Science, Arizona State University, Tempe 
      85287-1908, USA. spb@asu.edu
FAU - Opie, J M
AU  - Opie JM
FAU - Montoya, D Y
AU  - Montoya DY
LA  - eng
GR  - DC01376/DC/NIDCD NIH HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - J Speech Lang Hear Res
JT  - Journal of speech, language, and hearing research : JSLHR
JID - 9705610
SB  - IM
MH  - Adult
MH  - Audiometry, Pure-Tone
MH  - Auditory Threshold
MH  - Hearing Loss, Sensorineural/*diagnosis
MH  - Humans
MH  - Middle Aged
MH  - Noise/*adverse effects
MH  - *Perceptual Masking
MH  - Speech Perception/*physiology
MH  - Time Factors
EDAT- 1998/06/25 00:00
MHDA- 1998/06/25 00:01
CRDT- 1998/06/25 00:00
PHST- 1998/06/25 00:00 [pubmed]
PHST- 1998/06/25 00:01 [medline]
PHST- 1998/06/25 00:00 [entrez]
AID - 10.1044/jslhr.4103.549 [doi]
PST - ppublish
SO  - J Speech Lang Hear Res. 1998 Jun;41(3):549-63. doi: 10.1044/jslhr.4103.549.