Seminars in Hearing Research, Thursday, March 7
Event Date: | March 7, 2024 |
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Hosted By: | Speech, Language and Hearing Sciences |
Time: | 12:00 noon |
Location: | Nelson Hall, Room 1215 |
Priority: | No |
School or Program: | Non-Engineering |
College Calendar: | Show |
Abstract: The purpose of this project is to assess the acoustical conditions in which optimal intelligibility and low listening difficulty can be achieved in real classrooms for elementary students, taking into consideration the effects of dysphonic voice and typical classroom noise. Speech intelligibility tests were performed in six elementary classrooms with 80 normal-hearing students aged 7–11 years. The speech material was produced by a female actor using a normal voice quality and simulating a dysphonic voice. The stimuli were played by a Head and Torso Simulator. Child babble noise and classrooms with different reverberation times were used to obtain a Speech Transmission Index (STI) range from 0.2 to 0.7, corresponding to the categories bad, poor, fair, and good. The results showed a statistically significant decrease in intelligibility when the speaker was dysphonic, in STI higher than 0.33. The rating of listening difficulty showed a significantly greater difficulty in perceiving the dysphonic voice. In addition, younger children showed poorer performance and greater listening difficulty compared with older children when listening to the normal voice quality. Both groups were equally impacted when the voice was dysphonic. The results suggested that better acoustic conditions are needed for children to reach a good level of intelligibility and to reduce listening difficulty if the teacher is suffering from voice problems. This was true for children regardless of grade level, highlighting the importance of ensuring more favorable acoustic conditions for children throughout all elementary schools.
Titles and abstracts of all SHRP talks are here: https://purdue.edu/TPAN/hearing/shrp_abstracts
2024-03-07 12:00:00 2024-03-07 13:00:00 America/Indiana/Indianapolis Seminars in Hearing Research, Thursday, March 7 Seminars in Hearing Research will host Pasquale Bottalico, Associate Professor at the University of Illinois Urbana-Champaign on Thursday, March 7 at 12:00 p.m. in Nelson Hall, Room 1215. His presentation is entitled "Classroom acoustics for enhancing students' understanding when a teacher suffers from a dysphonic voice." Nelson Hall, Room 1215