Acknowledgement
We would like to thank all subjects who participated in this study and our colleagues at the Hearing Research Lab in Samsung Medical Center for performing the auditory tests.
References
- Chang YS, Yoon SH, Kim JR, Baek SY, Cho YS, Hong SH, et al. Standard audiograms for Koreans derived through hierarchical clustering using data from the Korean National Health and Nutrition Examination Survey 2009-2012. Sci Rep 2019;9:3675. https://doi.org/10.1038/s41598-019-40300-7
- Stelmachowicz PG, Pittman AL, Hoover BM, Lewis DE. Effect of stimulus bandwidth on the perception of /s/ in normal- and hearing-impaired children and adults. J Acoust Soc Am 2001;110:2183-90. https://doi.org/10.1121/1.1400757
- Pepler A, Munro KJ, Lewis K, Kluk K. Prevalence of cochlear dead regions in new referrals and existing adult hearing aid users. Ear Hear 2014;35:e99-109. https://doi.org/10.1097/AUD.0000000000000011
- Wolfe J, John A, Schafer E, Nyffeler M, Boretzki M, Caraway T. Evaluation of nonlinear frequency compression for school-age children with moderate to moderately severe hearing loss. J Am Acad Audiol 2010;21:618-28. https://doi.org/10.3766/jaaa.21.10.2
- McCreery RW, Alexander J, Brennan MA, Hoover B, Kopun J, Stelmachowicz PG. The influence of audibility on speech recognition with nonlinear frequency compression for children and adults with hearing loss. Ear Hear 2014;35:440-7. https://doi.org/10.1097/AUD.0000000000000027
- Alexander JM, Kopun JG, Stelmachowicz PG. Effects of frequency compression and frequency transposition on fricative and affricate perception in listeners with normal hearing and mild to moderate hearing loss. Ear Hear 2014;35:519-32. https://doi.org/10.1097/AUD.0000000000000040
- Glista D, Scollie S, Bagatto M, Seewald R, Parsa V, Johnson A. Evaluation of nonlinear frequency compression: clinical outcomes. Int J Audiol 2009;48:632-44. https://doi.org/10.1080/14992020902971349
- Perreau AE, Bentler RA, Tyler RS. The contribution of a frequency-compression hearing aid to contralateral cochlear implant performance. J Am Acad Audiol 2013;24:105-20. https://doi.org/10.3766/jaaa.24.2.4
- Sakamoto S, Goto K, Tateno M, Kaga K. Frequency compression hearing aid for severe-to-profound hearing impairments. Auris Nasus Larynx 2000;27:327-34. https://doi.org/10.1016/S0385-8146(00)00066-3
- Simpson A, Hersbach AA, McDermott HJ. Frequency-compression outcomes in listeners with steeply sloping audiograms. Int J Audiol 2006;45:619-29. https://doi.org/10.1080/14992020600825508
- Uys M, Pottas L, Vinck B, van Dijk C. The influence of non-linear frequency compression on the perception of music by adults with a moderate to sever hearing loss: subjective impressions. S Afr J Commun Disord 2012;59:53-67.
- Parsa V, Scollie S, Glista D, Seelisch A. Nonlinear frequency compression: effects on sound quality ratings of speech and music. Trends Amplif 2013;17:54-68. https://doi.org/10.1177/1084713813480856
- Bohnert A, Nyffeler M, Keilmann A. Advantages of a non-linear frequency compression algorithm in noise. Eur Arch Otorhinolaryngol 2010;267:1045-53. https://doi.org/10.1007/s00405-009-1170-x
- Picou EM, Marcrum SC, Ricketts TA. Evaluation of the effects of nonlinear frequency compression on speech recognition and sound quality for adults with mild to moderate hearing loss. Int J Audiol 2015;54:162-9. https://doi.org/10.3109/14992027.2014.961662
- Simpson A, Hersbach AA, McDermott HJ. Improvements in speech perception with an experimental nonlinear frequency compression hearing device. Int J Audiol 2005;44:281-92. https://doi.org/10.1080/14992020500060636
- Chang SA, Park MH, Oh SH, Lee KM. Influence of upper frequency boundary on consonant perception in normal hearing and cochlear implant adults. Audiol Speech Res 2017;13:231-9. https://doi.org/10.21848/asr.2017.13.3.231
- Jang H, Lee J, Lim D, Lee K, Jeon A, Jung E. Development of Korean standard sentence lists for sentence recognition tests. Audiology 2008;4:161-77.
- Jung KH, Cho YS, Cho JK, Park GY, Kim EY, Hong SH, et al. Clinical assessment of music perception in Korean cochlear implant listeners. Acta Otolaryngol 2010;130:716-23. https://doi.org/10.3109/00016480903380521
- Lim HJ, Park MK, Cho YS, Han GC, Choi JW, An YH, et al. Validation of the Korean version of the abbreviated profile of hearing aid benefit. Korean J Otorhinolaryngol-Head Neck Surg 2017;60:164-73. https://doi.org/10.3342/kjorl-hns.2016.17398
- Chu H, Cho YS, Park SN, Byun JY, Shin JE, Han GC, et al. Standardization for a Korean adaptation of the international outcome inventory for hearing aids: study of validity and reliability. Korean J Otorhinolaryngol-Head Neck Surg 2012;55:20-5. https://doi.org/10.3342/kjorl-hns.2012.55.1.20
- Byrne D. The speech spectrum--some aspects of its significance for hearing aid selection and evaluation. Br J Audiol 1977;11:40-6. https://doi.org/10.3109/03005367709078831
- Byrne D, Dillon H. The National Acoustic Laboratories' (NAL) new procedure for selecting the gain and frequency response of a hearing aid. Ear Hear 1986;7:257-65. https://doi.org/10.1097/00003446-198608000-00007
- Noh H, Lee DH. Cross-language identification of long-term average speech spectra in Korean and English: toward a better understanding of the quantitative difference between two languages. Ear Hear 2012;33:441-3. https://doi.org/10.1097/AUD.0b013e318234f03e
- Byun SW. Frequencies of Korean syllables and the distribution of syllables of PB word list. Korean J Otolaryngol-Head Neck Surg 2003;46:737-41.
- John A, Wolfe J, Scollie S, Schafer E, Hudson M, Woods W, et al. Evaluation of wideband frequency responses and nonlinear frequency compression for children with cookie-bite audiometric configurations. J Am Acad Audiol 2014;25:1022-33. https://doi.org/10.3766/jaaa.25.10.10
- Glista D, Scollie S, Sulkers J. Perceptual acclimatization post nonlinear frequency compression hearing aid fitting in older children. J Speech Lang Hear Res 2012;55:1765-87. https://doi.org/10.1044/1092-4388(2012/11-0163)