Publications by authors named "R L McCreery"
Purpose: Children with typical hearing and various language and cognitive challenges can struggle with processing speech in background noise. Thus, children with a language disorder (LD) are at risk for difficulty with speech recognition in poorer acoustic environments.
Method: The current study compared the effects of background speech-shaped noise (SSN) with and without reverberation on sentence recognition for children with LD ( = 9) and typical language development (TLD; = 9).
Purpose: This report compares device use in a cohort of Spanish-English bilingual and English monolingual children who are deaf and hard of hearing, including children fitted with traditional hearing aids, cochlear implants (CIs), and/or bone-conduction hearing devices.
Method: Participants were 84 Spanish-English bilingual children and 85 English monolingual children from clinical sites across the United States. The data represent a subset obtained in a larger clinical trial.
Objectives: The Children's English and Spanish Speech Recognition (ChEgSS) test is a computer-based tool for assessing closed-set word recognition in English and in Spanish, with a masker that is either speech-shaped noise or competing speech. The present study was conducted to (1) characterize the psychometric properties of the ChEgSS test, (2) evaluate feasibility and reliability for a large cohort of Spanish/English bilingual children with normal hearing, and (3) establish normative data.
Design: Three experiments were conducted to evaluate speech perception in children (4-17 years) and adults (19-40 years) with normal hearing using the ChEgSS test.
Background: Nonlinear frequency compression (NFC) is a signal processing technique designed to lower high-frequency inaudible sounds for a listener to a lower frequency that is audible. Because the maximum frequency that is audible to a listener with hearing loss will vary with the input speech level, the input level used to set NFC could impact speech recognition.
Purpose: The purpose of this study was to determine the influence of the input level used to set NFC on nonsense syllable recognition.
Objective: To determine if a stricter criterion for paediatric hearing aid fitting for proximity of fit-to-target of <3 dB root-mean-square (RMS) error produces better audibility and outcomes compared to the current <5 dB criterion, and to examine the relationship between aided audibility and RMS error by degree of hearing loss.
Design: We evaluated the influence of unaided hearing level on the relationship between RMS error and aided audibility. We assessed the effect of RMS error category (<3, 3-5, >5 dB) on aided audibility, speech recognition, expressive vocabulary, and morphosyntax.