非线性频率压缩助听器对汉语耳聋患者音质感知的影响  

The Effects of Nonlinear Frequency Compression on Sound Quality Perception by Hearing-Impaired Listeners

作　　者：尤妍颜 陈雪清 徐立 孟超 郭倩倩 

机构地区：[1]首都医科大学附属北京同仁医院,北京市耳鼻咽喉科研究所,耳鼻咽喉头颈科学教育部重点实验室(首都医科大学),北京100730 [2]School of Rehabilitation and Communication Sciences,Ohio University

出　　处：《听力学及言语疾病杂志》2017年第6期640-644,共5页Journal of Audiology and Speech Pathology

基　　金：首都市民健康项目培育专项(Z141100002114033);北京市医院管理局临床医学发展专项-2015年度"扬帆"计划临床技术创新项目(XMLX201514);首都卫生发展科研专项项目(首发2011-1017-01)联合资助;首都医科大学附属北京同仁医院科研种子基金资助项目(2016-YJJ-ZZL-001)

摘　　要：目的探讨非线性频率压缩(nonlinear frequency compression,NLFC)技术对汉语耳聋患者音质感知的影响。方法 23例无助听器佩戴经验的成年双侧中、重度感音神经性聋患者,初次选配具有NLFC功能的Phonak Bolero Q系列耳背式助听器(均双耳助听),选配结束后立即进行音质感知测试,测试音(男声、女声、鸟鸣、音乐和自己的声音)通过Matlab软件经扬声器随机播放,给声强度为65dBSPL;NLFC设置为截止频率4.9~6kHz,压缩比为1.5,患者分别在NLFC开启和关闭条件下对测试音在响度、清晰度、自然程度和总体感觉四方面的音质进行评价,分数越高,表示患者对测试音音质的满意度越高。结果 23例患者在NLFC开启和关闭条件下的6、8kHz助听听阈差异有统计学意义,前者优于后者(P<0.05),而4kHz助听听阈差异无统计学意义(P>0.05);患者在NLFC开启和关闭条件下对上述五种测试音在响度、清晰度、自然程度和总体感觉四个方面的音质感知评分差异均无统计学意义(均为P>0.05)。结论 NLFC开启和关闭对初次使用该技术助听器的患者在音质感知方面无明显影响。Objective To investigate the effects of nonlinear frequency compression(NLFC)on sound quality perception by the Mandarin-speaking subjects with high-frequency hearing loss.Methods Twenty-three listeners with sensorineural hearing loss with no previous experiences of using hearing aids participated in this study.They were all fitted binaurally with Phonak Bolero Q hearing aids.The stimuli,including male voice,female voice,bird chirping,music,and self-voice,were presented in a random order with a custom software via a loudspeaker at65 dBSPL.Regarding NLFC parameters,cut-off frequency(CF)ranged from 4.9 to 6 kHz and compression ratio(CR)was programed as 1.5.Subjects evaluated the sound quality of the stimulus in loudness,clearness,naturalness and overall preference under the conditions of NLFC-on and NLFC-off.A paired-sample t-test was conducted to assess the group differences in sound quality rating between NLFC on and off conditions.Results Paired t test showed significant difference of high-frequency hearing threshold under the condition of NLFC-on and NLFC-off at 6 and 8 kHz(P>0.05).No significant statistical difference was found in subjects' sound quality ratings between NLFC-on and NLFC-off conditions(all P>0.05).Conclusion NLFC technology resulted in no significant impact on sound quality perception for the non-experienced hearing aid users.

关 键 词：助听器 非线性频率压缩 音质感知 

分 类 号：R764.5[医药卫生—耳鼻咽喉科]