Spoken word recognition in noise in Mandarin-speaking pediatric cochlear implant users.
Spoken word recognition in noise in Mandarin-speaking pediatric cochlear implant users.
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DOI：
10.1016/j.ijporl.2018.07.039
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发表时间：
2018-10
影响因子：
1.5
通讯作者：
Xu L
中科院分区：
文献类型：
--
作者：
Ren C;Yang J;Zha D;Lin Y;Liu H;Kong Y;Liu S;Xu L
本研究的目的是比较在语音频谱型噪声和四语语咿呀学语存在的情况下，使用人工耳蜗的普通话儿童的语音识别表现。参与者包括33名单侧CI患儿（平均年龄10.4±2.9岁，CI平均使用时间7.5±3.0年）。标准中文词汇邻域测试分别在安静、语音频谱形噪声和四人牙牙学语条件下进行。两种掩蔽器的信噪比（SNRs）分别设置为+5和+10 dB。参与者通过口头重复他们听到的每个单词来回应，并以识别性能的百分比准确性来评分。对正确率数据进行广义线性模型（GLM）拟合、相关检验和双向重复测量方差分析。安静环境下的单词识别正确率平均为74.5%，但在10 dB信噪比下SSN和FTB的正确率分别降至57.3%和48.8%，在5 dB信噪比下SSN和FTB的正确率分别降至44.4%和32.6%。在安静和噪音条件下，参与者对难词的识别准确率都低于对容易词的识别准确率。双音节单词的识别准确率高于单音节单词。GLM分析显示，所有四个被测因素（掩蔽类型、信噪比、词汇邻域特征和词汇类型）都对CIs儿童的单词识别有显著影响。在信噪比为10 dB的情况下，双音节词和单音节词在两类掩蔽者的词识别得分均显著相关。本研究表明，在安静和噪音条件下，词汇邻域特征和词汇类型等词汇特征对儿童CI使用者的语音识别表现均有显著影响。具有多年CI使用经验的儿童在安静环境下的语音识别达到了比较理想的水平，但在日常听力环境中仍然遇到了明显的困难。与稳态噪声相比，波动噪声（如咿呀学语）对CIs儿童的语音识别造成更大的挑战。
The purpose of the present study was to compare spoken word recognition performance in the presence of speech spectrum-shaped noise and four-talker babbles in Mandarin-speaking children with cochlear implants (CIs). Participants included 33 children with unilateral CIs (with a mean age of 10.4 ± 2.9 years old and a mean length of CI use of 7.5 ± 3.0 years). The Standard Chinese version of Lexical Neighborhood Test was implemented in quiet, speech-spectrum-shaped noise (SSN), and four-talker babble (FTB). The signal-to-noise ratios (SNRs) were set at +5 and +10 dB for both types of maskers. Participants responded by verbally repeating each word they heard and the response was scored as the percentage accuracy of recognition performance. A Generalized Linear Model (GLM) fitting, correlational tests, and a two-way repeated-measures ANOVA were conducted on the percent-correct data. Word recognition in quiet was on average 74.5% correct but dropped to 57.3% and 48.8% correct for SSN and FTB at 10 dB SNR, respectively, and 44.4% and 32.6% correct for SSN and FTB at 5 dB SNR, respectively. In both quiet and noise conditions, the participants showed lower recognition accuracy for the hard words than for the easy words. Disyllabic words were recognized with higher accuracy rates than were the monosyllabic words. The GLM analysis revealed that all four tested factors (masker type, SNR, lexical neighborhood feature, and lexical type) showed significant impacts on word recognition in children with CIs. Word recognition scores in the two types of maskers were significantly correlated for the disyllabic words at both SNRs and monosyllabic words at 10 dB SNR. The present study demonstrated that the lexical features such as the lexical neighborhood characteristics and lexical type had significant effects on speech recognition performance in both quiet and noise conditions in pediatric CI users. Children with years of experience of CI use still encountered remarkable difficulties in everyday listening environment although their speech recognition in quiet reached relatively desired level. Fluctuating noise, such as speech babbles, caused greater challenge than steady-state noise for speech recognition in children with CIs.
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DOI：
10.1044/1092-4388(2013/12-0324
发表时间：
2014-02-01
影响因子：
2.6
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DOI：
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DOI：
10.1016/j.ijporl.2015.07.023
发表时间：
2015-10-01
影响因子：
1.5
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