The Subjective and Objective Assessments of Open Fitting Hearing Aids with Custom Tips

• Main Authors: CHEN, CHI-HONG, 陳紀宏
• Other Authors: CHEN, HSIAO-CHUAN
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/83vhfp

碩士 === 國立高雄師範大學 === 特殊教育學系 === 105 === The purpose of the research was to investigate the difference between Custom tip and Dome on occlusion, gain, the function of signal processing, and satisfaction when fitting open-fit hearing aids. The experiment research method was adopted. According to different research goals, there were four experiments. The samples and results were described as follows: 1、 The occlusion and occlusion effect was evaluated via objective and subjective methods. On the part of objective method was Real Ear Measurement（REM）. The results included:（1） Dome was significantly smaller than Custom tip on REOR-REUR（OU） and REAR-REUR（AU） when the input sound level was 50 dB SPL,（2） When the input sound level was 65 dB SPL, Dome’s OU was significantly smaller than Custom tip’s at 750Hz and 1000Hz. There was no significantly difference between Custom tip and Dome on AU. On the part of subjective method was Q8 and Q9 of the open fitting hearing aids’ satisfaction inventory. The result shows there were no significantly difference between Custom tip and Dome on these two questions. But the Custom tip was same as Dome（48%） on the occasion effect, even better（37%）. 2、 The REIG and functional gain did not differ between Custom tip and Dome, regardless of whether 50 dB SPL or 65 dB SPL input sound level were used. Both REIG and functional gain were significantly different within different frequencies（p＜.001）. 3、 SRT on quiet condition（M=29.81） was significantly better than noise conditions（M=32.67）（p<.01）. Using Custom tip（M=30.58） also could achieve better SRT than using Dome（M=31.89）（p＜.001）. There were no significantly differenct on microphone setting, noise reduction, and the interaction within variables 4、Two methods were used to compare the usage of Custom tip and Dome via the open fitting hearing aids’ satisfaction inventory. There was no significantly difference between Custom tip and Dome on overall subjective rating. However, choosing one of the following solutions set Dome, Custom tip or Same in each questions of the inventory, both the option of Same and Custom tip were significantly more than the option of Dome（p<.01）. The recommend about research and clinical field also mentioned in the thesis.