The influence of informational masking in reverberant, multi-talker environments

The Journal of the Acoustical Society of America
Adam Westermann, Jörg M Buchholz

Abstract

The relevance of informational masking (IM) in real-world listening is not well understood. In literature, IM effects of up to 10 dB in measured speech reception thresholds (SRTs) are reported. However, these experiments typically employed simplified spatial configurations and speech corpora that magnified confusions. In this study, SRTs were measured with normal hearing subjects in a simulated cafeteria environment. The environment was reproduced by a 41-channel 3D-loudspeaker array. The target talker was 2 m in front of the listener and masking talkers were either spread throughout the room or colocated with the target. Three types of maskers were realized: one with the same talker as the target (maximum IM), one with talkers different from the target, and one with unintelligible, noise-vocoded talkers (minimal IM). Overall, SRTs improved for the spatially distributed conditions compared to the colocated conditions. Within the spatially distributed conditions, there was no significant difference between thresholds with the different- and vocoded-talker maskers. Conditions with the same-talker masker were the only conditions with substantially higher thresholds, especially in the colocated conditions. These results suggest tha...Continue Reading

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Citations

Aug 1, 2016·The Journal of the Acoustical Society of America·Alexandre Chabot-LeclercTorsten Dau
Sep 3, 2016·The Journal of the Acoustical Society of America·Baljeet Rana, Jörg M Buchholz
Apr 5, 2017·The Journal of the Acoustical Society of America·Adam Westermann, Jörg M Buchholz
May 3, 2018·The Journal of the Acoustical Society of America·Baljeet Rana, Jörg M Buchholz
Apr 3, 2020·The Journal of the Acoustical Society of America·Lucas S BaltzellVirginia Best
Nov 2, 2019·The Journal of the Acoustical Society of America·Thomas Biberger, Stephan D Ewert
May 5, 2021·The Journal of the Acoustical Society of America·Naim MansourTorsten Dau

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