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ERIC Number: EJ1043591
Record Type: Journal
Publication Date: 2014-Oct
Pages: 19
Abstractor: As Provided
Reference Count: N/A
ISBN: N/A
ISSN: ISSN-1092-4388
Development of Spatial Release from Masking in Mandarin-Speaking Children with Normal Hearing
Yuen, Kevin C. P.; Yuan, Meng
Journal of Speech, Language, and Hearing Research, v57 n5 p2005-2023 Oct 2014
Purpose: This study investigated the development of spatial release from masking in children using closed-set Mandarin disyllabic words and monosyllabic words carrying lexical tones as test stimuli and speech spectrum-weighted noise as a masker. Method: Twenty-six children ages 4-9 years and 12 adults, all with normal hearing, participated in speech recognition tests under 2 conditions: (a) speech and noise spatially mixed and presented from the front (NF), and (b) speech presented from the front with noise spatially separated and presented from the side (NS) with different signal-to-noise ratios (SNRs). Performance-SNR psychometric functions were obtained that generated the SNR for a 50% correct score (SNR-50%) as the outcome measure. Results: In the child participants, SNR-50% improved with age in NS but not NF. The difference in SNR-50% between NS and NF--the spatial release from masking (SRM)--increased with age with an average improvement of 0.1-0.15 dB per month. Conclusions: SRM has a long developmental time, at least up to 9 years of age, which is significantly longer than some previous developmental studies have suggested. The child participants had not yet reached the adult SRM performance level. SRM is a potential clinical measure to reflect the maturation of spatial auditory processing.
American Speech-Language-Hearing Association (ASHA). 10801 Rockville Pike, Rockville, MD 20852. Tel: 800-638-8255; Fax: 301-571-0457; e-mail: subscribe@asha.org; Web site: http://jslhr.asha.org
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A