中文摘要：

目的：对比评估瞬态噪声抑制策略（AntiShockTM）关闭与开启条件下瞬态噪声响度及言语、瞬态噪声与环境噪声失真度的差异,分析AntiShockTM对响度和声音质量的影响因素,为助听器选配参数的设置提供依据。方法：24例无助听器佩戴经验的感音神经性聋患者参加本次研究,研究中受试者助听器均为双耳选配,分别在AntiShockTM关闭和开启条件下对比评估瞬态噪声响度及聆听失真度情况。结果：与AntiShockTM处于关闭状态相比,在AntiShockTM开启条件下：①感觉瞬态噪声响度较低、适中、较高、过高的受试者比例分别为3.0%,72.7%,22.9%和1.4%。双因素方差分析表明,不同聆听条件以及不同性别间的响度识别平均得分差异均有统计学意义（均P〈0.01）。②患者认为言语部分失真、可以理解、清晰以及非常清晰的受试者比例分别为2.5%,30.6%,32.9%和34.0%,认为AntiShockTM开启导致言语严重失真的受试者比例为0。经单因素方差分析,不同聆听条件下言语失真度得分差异有统计学意义（P〈0.01）。③认为瞬态噪声部分失真和清晰自然的受试者比例分别为2.9%和97.1%,认为AntiShockTM开启导致瞬态噪声严重失真的受试者比例为0。经单因素方差分析,不同聆听条件下瞬态噪声失真度得分差异无统计学意义（P〉0.05）。④认为环境噪声部分失真,清晰但声音较小和清晰自然的受试者比例分别为0.4%,0.8%和98.8%,认为AntiShockTM开启导致环境噪声严重失真的受试者比例为0。经两组独立样本t检验,不同聆听条件下环境噪声失真度得分差异无统计学意义（P〉0.05）。结论：启动AntiShockTM可将瞬态噪声有效控制在舒适的响度范围内。启动AntiShockTM未导致言语、瞬态噪声及环境噪声失真度发生改变。

英文摘要：

Objective：A current technology for detecting and controlling transient noise in hearing aids （AntiShockTM）was evaluated.The objective was to evaluate AntiShockTMon loudness control and whether results in negative changes in sound quality of speech,transient noise and environmental noise and provide implications for hearing aid fitting.Method：Twenty-four subjects with sensorineural hearing loss participated in the study.In a single-blinded paradigm,the subjects were asked to rate loudness of transient noise and distortion of speech,transient noise and environmental noise with the AntiShockTMin both on and off conditions.Result：①The percentage of the transient noise rated as soft,comfortable,loud,too loud was 3.0%,72.7%,22.9%and 1.4%,respectively.There were significant differences in mean scores of loudness perception among listening conditions and between genders by a Two-Way ANOVA,the P values were 0.009and 0.001,respectively.②The percentage of the speech rated as mild distorted,understandable,clear and very clear was 2.5%,30.6%,32.9%and 34.0%,respectively.There were significant differences in mean scores of speech distortion under different listening conditions by an One-Way ANOVA（P0.01）.③The percentage of the transient noise rated as mild distorted,clear and natural was 2.9%and 97.1%,respectively.No significant differences in mean scores of nature of transient noise was found under different listening conditions by an One-Way ANOVA（P0.05）.④The percentage of the environmental noise rated as mild distorted,clear but soft,clear and natural was 0.4%,0.8%and 98.8%,respectively.No significant differences in mean scores of nature of environmental noise was found between different listening conditions by an Independent-Samples T Test（P0.05）.Conclusion：AntiShockTMshowed positive effects on the loudness control of the transient noise.Quality of speech,transient noise and environmental noise were not impacted by AntiShockTM.