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Relationship between masking release in fluctuating maskers and speech reception thresholds in stationary noise.
J Acoust Soc Am. 2012 Sep; 132(3):1655-66.JA

Abstract

In contrast to normal-hearing (NH) listeners, hearing-impaired (HI) listeners often show strongly reduced masking release (MR) in fluctuating interferers, which has commonly been associated with spectral and temporal processing deficits. However, it has recently been proposed that the reduced MR could result from an increased speech recognition threshold (SRT) in stationary noise [Bernstein and Grant, J. Acoust. Soc. Am. 125, 3358-3372 (2009)]. This was tested by presenting noise-band vocoded as well as low-pass and high-pass filtered stimuli to NH listeners, thereby increasing their stationary-noise SRTs to those of the HI listeners. If the primary determinant of MR is the SRT in stationary noise then the amount of the MR should be independent of the type of processing used to obtain the stationary-noise SRT. However, the relation between the amount of MR and the stationary-noise SRT depended on the type of processing. For a fluctuating interferer, none of the processing conditions reduced the MR of the NH listeners to that of the HI listeners. In contrast, for an interfering talker, the results for vocoded stimuli were similar to those of the HI listeners. Overall, these results suggest that the observed MR is only partially related to the stationary-noise SRT.

Authors+Show Affiliations

Centre for Applied Hearing Research, Department of Electrical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark. cfc@elektro.dtu.dkNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22978894

Citation

Christiansen, Claus, and Torsten Dau. "Relationship Between Masking Release in Fluctuating Maskers and Speech Reception Thresholds in Stationary Noise." The Journal of the Acoustical Society of America, vol. 132, no. 3, 2012, pp. 1655-66.
Christiansen C, Dau T. Relationship between masking release in fluctuating maskers and speech reception thresholds in stationary noise. J Acoust Soc Am. 2012;132(3):1655-66.
Christiansen, C., & Dau, T. (2012). Relationship between masking release in fluctuating maskers and speech reception thresholds in stationary noise. The Journal of the Acoustical Society of America, 132(3), 1655-66. https://doi.org/10.1121/1.4742732
Christiansen C, Dau T. Relationship Between Masking Release in Fluctuating Maskers and Speech Reception Thresholds in Stationary Noise. J Acoust Soc Am. 2012;132(3):1655-66. PubMed PMID: 22978894.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relationship between masking release in fluctuating maskers and speech reception thresholds in stationary noise. AU - Christiansen,Claus, AU - Dau,Torsten, PY - 2012/9/18/entrez PY - 2012/9/18/pubmed PY - 2013/2/6/medline SP - 1655 EP - 66 JF - The Journal of the Acoustical Society of America JO - J Acoust Soc Am VL - 132 IS - 3 N2 - In contrast to normal-hearing (NH) listeners, hearing-impaired (HI) listeners often show strongly reduced masking release (MR) in fluctuating interferers, which has commonly been associated with spectral and temporal processing deficits. However, it has recently been proposed that the reduced MR could result from an increased speech recognition threshold (SRT) in stationary noise [Bernstein and Grant, J. Acoust. Soc. Am. 125, 3358-3372 (2009)]. This was tested by presenting noise-band vocoded as well as low-pass and high-pass filtered stimuli to NH listeners, thereby increasing their stationary-noise SRTs to those of the HI listeners. If the primary determinant of MR is the SRT in stationary noise then the amount of the MR should be independent of the type of processing used to obtain the stationary-noise SRT. However, the relation between the amount of MR and the stationary-noise SRT depended on the type of processing. For a fluctuating interferer, none of the processing conditions reduced the MR of the NH listeners to that of the HI listeners. In contrast, for an interfering talker, the results for vocoded stimuli were similar to those of the HI listeners. Overall, these results suggest that the observed MR is only partially related to the stationary-noise SRT. SN - 1520-8524 UR - https://www.unboundmedicine.com/medline/citation/22978894/Relationship_between_masking_release_in_fluctuating_maskers_and_speech_reception_thresholds_in_stationary_noise_ L2 - https://doi.org/10.1121/1.4742732 DB - PRIME DP - Unbound Medicine ER -