Short-term study of the effect of speech coding strategy on the auditory performance of pre- and post-lingually deafened adults implanted with the clarion CII®
Short-term study of the effect of speech coding strategy on the auditory performance of pre- and post-lingually deafened adults implanted with the clarion CII®
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DOI：
10.1080/00016480410016324
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发表时间：
2004-05-01
影响因子：
1.4
通讯作者：
D'Elia, C
中科院分区：
文献类型：
--
作者：
Filipo, R;Mancini, P;D'Elia, C
耳蜗植入者的听觉表现与许多变量有关，如听力学特征、年龄和语音编码策略类型。近年来，许多不同的处理声音的方法已经被开发出来，可能会影响听觉表现。本研究的目的是评估患者在安静和噪声环境中进行语音感知任务时的个体内差异，这是从标准策略[连续交错采样（CIS）/同步模拟策略（SAS）]切换到高分辨率（HiRes）的结果。材料和方法-共选择了14名植入Clarion CII（R）的语言后成人进行试验。在启动时，6名患者选择了CIS策略，8名患者选择了SAS策略。平均9.3个月后，所有患者都转为HiRes。所有患者均在安静和噪声条件下（语音/噪声比（SNR）= +10）使用双音节单词和句子进行测试（开放式模式）。测试进行后，与CIS/SAS策略的初始期和3个月后切换到HiRes.Results-After切换一个显着的改善，被认为是在安静的讲话（单词+25.2%，句子+10.8%）和噪声中的语音（单词44.8%，句子45.4%）。结论-尽管个体差异，所有患者都提高了他们的表现与HiRes的使用，在不利的收听条件（SNR =+10）下看到最大的改进。即使在HiRes使用的第一周后，也报告了语音识别和整体音质感知的主观改善。
Objective-The auditory performance of cochlear implantees is linked to numerous variables, such as audiological characteristics, age and type of speech coding strategy. In recent years, many different ways of processing sounds have been developed, with possible implications for auditory performance. The purpose of this study was to evaluate the intra-individual differences of patients for speech perception tasks in quiet and in noise as a result of switching from a standard strategy [Continuous Interleaved Sampling (CIS)/Simultaneous Analog Strategy (SAS)] to Hi-Resolution (HiRes).Material and Methods-A total of 14 post-lingual adults implanted with the Clarion CII(R) were selected for trials. At switch-on, six patients chose a CIS strategy and eight an SAS strategy. After an average period of 9.3 months, all patients were switched over to HiRes. All patients were tested (open-set mode) with bisyllabic words and sentences, in both quiet and noise [speech/noise ratio (SNR) = +10]. Testing was carried out after an initial period with the CIS/SAS strategy and 3 months after switching over to HiRes.Results-After switch-over a significant improvement was seen for both speech in quiet (words +25.2%, sentences + 10.8%) and speech in noise (words 44.8%, sentences 45.4%).Conclusion-Despite individual differences, all patients improved their performance with HiRes use, the greatest improvements being seen under unfavourable listening conditions (SNR = + 10). Subjective improvements in speech discrimination and overall sound quality perception were reported even after the first week of HiRes use.