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Abstract
This study investigated the effects of adaptive dynamic range optimization (ADRO®) processing for six bimodal listeners who used a hearing aid in one ear and a cochlear implant in the other. ‘Bimodal’ refers to the use of acoustic and electrical stimulation together. Bimodal speech recognition thresholds with the Japanese hearing in noise test were significantly lower for two ADRO devices than two non-ADRO devices in quiet, in noise from the front, and in noise from the implanted side. When the noise was presented from the non-implanted side there was no significant difference between the ADRO and non-ADRO conditions. The hearing aid measure of contrast questionnaire indicated that participants preferred ADRO in 77.3% of situations. ADRO was especially preferred in more difficult situations. The ADRO processing was designed for use in bimodal prostheses, and this study confirmed that speech intelligibility and sound quality improvements are obtainable by using ADRO in a bimodal context.
| Abbreviations | ||
| ACE | = | Advanced combination encoder |
| ADRO | = | Adaptive dynamic range optimization |
| BTE | = | Behind the ear |
| FFT | = | Fast Fourier transform |
| HAMOC | = | Hearing aid measure of contrast |
| HINT | = | Hearing in noise test |
| SHAPIE | = | Shortened hearing aid performance inventory for the elderly |
| Abbreviations | ||
| ACE | = | Advanced combination encoder |
| ADRO | = | Adaptive dynamic range optimization |
| BTE | = | Behind the ear |
| FFT | = | Fast Fourier transform |
| HAMOC | = | Hearing aid measure of contrast |
| HINT | = | Hearing in noise test |
| SHAPIE | = | Shortened hearing aid performance inventory for the elderly |
Sumario
Este estudio investigó los efectos del procesamiento de la optimización adaptable del rango dinámico (ADRO®) en seis oyentes bimodales que usaron un auxiliar auditivo en un oído y un implante coclear en el otro. Por “bimodal“ nos referimos al uso simultáneo de estimulación acústica y eléctrica. Los umbrales de reconocimiento bimodal del lenguaje con la Prueba Japonesa de Audición en Ruido, fueron significativamente más bajos con dos instrumentos ADRO que con dos instrumentos no-ADRO en silencio, con ruido del frente y con ruido en el lado implantado. Cuando el ruido se presentó en el lado no implantado no hubo diferencia significativa entre las condiciones ADRO y no-ADRO. El Cuestionario de Medición de Contraste con Auxiliar Auditivo indicó que los participantes prefirieron el ADRO en el 77.3% de las situaciones. El ADRO fue especialmente preferido en situaciones da mayor dificultad. El procesamiento ADRO fue diseñado para usarse con prótesis bimodales y este estudio confirma que usando el ADRO puede obtenerse mejoría en la inteligibilidad del habla y en la calidad del sonido en un contexto bimodal.