1. Ricketts TA. Directional hearing aids: then and now. J Rehabil Res Dev. 2005;Jul-Aug;42(4 Suppl 2):133-144. PMID:
16470469.
2. Bentler RA. Effectiveness of directional microphones and noise reduction schemes in hearing aids: a systematic review of the evidence. J Am Acad Audiol. 2005;Jul-Aug;16(7):473-484. PMID:
16295234.
3. Ricketts TA. Directional hearing AIDS. Trends Amplif. 2001 12;5(4):139-176. PMID:
25425906.
4. Klemp EJ, Dhar S. Speech perception in noise using directional microphones in open-canal hearing aids. J Am Acad Audiol. 2008;Jul-Aug;19(7):571-578. PMID:
19248734.
5. Valente M, Mispagel KM, Tchorz J, Fabry D. Effect of type of noise and loudspeaker array on the performance of omnidirectional and directional microphones. J Am Acad Audiol. 2006 6;17(6):398-412. PMID:
16866004.
6. Ricketts TA, Hornsby BW. Directional hearing aid benefit in listeners with severe hearing loss. Int J Audiol. 2006 3;45(3):190-197. PMID:
16579494.
7. Walden BE, Surr RK, Grant KW, Van Summers W, Cord MT, Dyrlund O. Effect of signal-to-noise ratio on directional microphone benefit and preference. J Am Acad Audiol. 2005 10;16(9):662-676. PMID:
16515138.
8. Kuk F, Keenan D, Lau CC, Ludvigsen C. Performance of a fully adaptive directional microphone to signals presented from various azimuths. J Am Acad Audiol. 2005 6;16(6):333-347. PMID:
16178405.
9. Cord MT, Surr RK, Walden BE, Dyrlund O. Relationship between laboratory measures of directional advantage and everyday success with directional microphone hearing aids. J Am Acad Audiol. 2004 5;15(5):353-364. PMID:
15506497.
10. Wu YH, Bentler RA. Impact of visual cues on directional benefit and preference. Part II. field tests. Ear Hear. 2010 2;31(1):35-46. PMID:
19773657.
11. Gnewikow D, Ricketts T, Bratt GW, Mutchler LC. Real-world benefit from directional microphone hearing aids. J Rehabil Res Dev. 2009;46(5):603-618. PMID:
19882494.
12. Festen JM, Plomp R. Effects of fluctuating noise and interfering speech on the speech-reception threshold for impaired and normal hearing. J Acoust Soc Am. 1990 10;88(4):1725-1736. PMID:
2262629.
13. Palmer C, Bentler R, Mueller HG. Evaluation of a second-order directional microphone hearing aid: II. Self-report outcomes. J Am Acad Audiol. 2006 3;17(3):190-201. PMID:
16646279.
14. Keidser G, Dillon H, Convery E, Mejia J. Factors influencing individual variation in perceptual directional microphone benefit. J Am Acad Audiol. 2013;Nov-Dec;24(10):955-968. PMID:
24384081.
15. Wu YH, Bentler RA. Impact of visual cues on directional benefit and preference. Part I. laboratory tests. Ear Hear. 2010 2;31(1):22-34. PMID:
19864954.
16. Wu YH. Effect of age on directional microphone hearing aid benefit and preference. J Am Acad Audiol. 2010 2;21(2):78-89. PMID:
20166310.
17. Ricketts T, Mueller HG. Predicting directional hearing aid benefit for individual listeners. J Am Acad Audiol. 2000;Nov-Dec;11(10):561-569. PMID:
11198073.
18. Keidser G, Dillon H, Carter L, O'Brien A. NAL-NL2 empirical adjustments. Trends Amplif. 2012 12;16(4):211-223. PMID:
23203416.
19. Jang HS, Lee JH, Lim DH, Lee KW, Jeon AR, Jung EJ. Development of Korean standard sentence lists for sentence recognition tests. Audiology. 2008 10;4(2):161-177.
20. Moon SK, Hee Kim S, Mun HA, Jung HK, Lee JH, Choung YH, et al. The Korean hearing in noise test. Int J Audiol. 2008 6;47(6):375-376. PMID:
18569115.
21. Nilsson M, Soli SD, Sullivan JA. Development of the Hearing in Noise Test for the measurement of speech reception thresholds in quiet and in noise. J Acoust Soc Am. 1994 2;95(2):1085-1099. PMID:
8132902.
22. Ricketts TA. How fitting, patient, and environmental factors affect directional benefit. Hear J. 2003 11;56(11):31-39.
24. Alcantara JL, Moore BC, Kuhnel V, Launer S. Evaluation of the noise reduction system in a commercial digital hearing aid. Int J Audiol. 2003 1;42(1):34-42. PMID:
12564514.
25. Nordrum S, Erler S, Garstecki D, Dhar S. Comparison of performance on the hearing in noise test using directional microphones and digital noise reduction algorithms. Am J Audiol. 2006 6;15(1):81-91. PMID:
16803795.
26. Chung K. Challenges and recent developments in hearing aids. Part I. Speech understanding in noise, microphone technologies and noise reduction algorithms. Trends Amplif. 2004;8(3):83-124. PMID:
15678225.
27. Ricketts T. The impact of head angle on monaural and binaural performance with directional and omnidirectional hearing aids. Ear Hear. 2000 8;21(4):318-328. PMID:
10981608.
28. Wu YH, Bentler RA. A method to measure hearing aid directivity index and polar pattern in small and reverberant enclosures. Int J Audiol. 2011 6;50(6):405-416. PMID:
21309640.
29. Cox RM, Alexander GC, Taylor IM, Gray GA. Benefit acclimatization in elderly hearing aid users. J Am Acad Audiol. 1996 12;7(6):428-441. PMID:
8972444.
30. Dawes P, Munro KJ, Kalluri S, Edwards B. Acclimatization to hearing aids. Ear Hear. 2014;Mar-Apr;35(2):203-212. PMID:
24351612.