The effects of reverberation on a listener's ability to recognize target sentences in the presence of up to three synchronized masking sentences.
Objective: To determine the effects of room reverberation on target sentence recognition in the presence of 0-to-3 synchronous masking sentences. Design: Target and masker sentences were presented through four loudspeakers (± 90° and ± 45° azimuth; 1m from the listener) in rooms having reverberation times (RT) of 0.2, 0.4, 0.6, and 1.1 s. Study Sample: Four groups of 13 listeners each participated in the study (N = 52).RESULTS: In rooms with RTs of 0.2, 0.4, and 0.6 s, mean speech recognition scores (SRSs) were similar, with scores ranging from 96-100%, 90-95%, 75-80%, and 53-60%, when 0, 1, 2, and 3 competing sentences were present, respectively. However, in the room with a RT = 1.1 s, SRSs deteriorated significantly faster as the number of competing sentences increased; mean scores were 93%, 73%, 26%, and 10%, in the 0, 1, 2, 3, competing sentence condition, respectively. The majority of errors in SRSs (98%) resulted from listeners reporting words presented in masking sentences along with those in target sentences (mixing errors). Conclusions: Results indicate that reverberation has a similar influence on SRSs measured in multi-talker environments, when room reverberation is ≤ 0.6 s. However, SRSs are dramatically reduced in the room with a RT = 1.1 s, even when only one competing talker is present. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
MSU Digital Commons Citation
Besing, Joan and Koehnke, Janet, "The effects of reverberation on a listener's ability to recognize target sentences in the presence of up to three synchronized masking sentences." (2011). Department of Communication Sciences and Disorders Faculty Scholarship and Creative Works. 1.
Abouchacra, K. S., Besing, J., Koehnke, J., & Letowski, T. (2011). The effects of reverberation on a listener’s ability to recognize target sentences in the presence of up to three synchronized masking sentences. International Journal of Audiology, 50(7), 468–476. https://doi.org/10.3109/14992027.2011.565424