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Hearing-Aid Safety: A Comparison Of Estimated Threshold Shifts For Gains Recommended By Nal-Nl2 And Dsl M[I/O] Prescriptions For Children, Teresa Y. C. Ching, Earl E. Johnson, Mark Seeto, John H. Macrae
Hearing-Aid Safety: A Comparison Of Estimated Threshold Shifts For Gains Recommended By Nal-Nl2 And Dsl M[I/O] Prescriptions For Children, Teresa Y. C. Ching, Earl E. Johnson, Mark Seeto, John H. Macrae
ETSU Faculty Works
Objective: To investigate the predicted threshold shift associated with the use of nonlinear hearing aids fitted to the NAL-NL2 or the DSL m[i/o] prescription for children with the same audiograms. For medium and high input levels, we asked: (1) How does predicted asymptotic threshold shifts (ATS) differ according to the choice of prescription? (2) How does predicted ATS vary with hearing level for gains prescribed by the two prescriptions? Design: A mathematical model consisting of the modified power law combined with equations for predicting temporary threshold shift (Macrae, 1994b) was used to predict ATS. Study sample: Predicted threshold shift were …
A Comparison Of Nal And Dsl Prescriptive Methods For Paediatric Hearing-Aid Fitting: Predicted Speech Intelligibility And Loudness, Teresa Y.C. Ching, Earl E. Johnson, Sanna Hou, Harvey Dillon, Vicky Zhang, Lauren Burns, Patricia Van Buynder, Angela Wong, Christopher Flynn
A Comparison Of Nal And Dsl Prescriptive Methods For Paediatric Hearing-Aid Fitting: Predicted Speech Intelligibility And Loudness, Teresa Y.C. Ching, Earl E. Johnson, Sanna Hou, Harvey Dillon, Vicky Zhang, Lauren Burns, Patricia Van Buynder, Angela Wong, Christopher Flynn
ETSU Faculty Works
Objective: To examine the impact of prescription on predicted speech intelligibility and loudness for children. Design: A between-group comparison of speech intelligibility index (SII) and loudness, based on hearing aids fitted according to NAL-NL1, DSL v4.1, or DSL m[i/o] prescriptions. A within-group comparison of gains prescribed by DSL m[i/o] and NAL-NL2 for children in terms of SII and loudness. Study sample: Participants were 200 children, who were randomly assigned to first hearing-aid fitting with either NAL-NL1, DSL v4.1, or DSL m[i/o]. Audiometric data and hearing-aid data at 3 years of age were used. Results: On average, SII calculated on the …