针对复杂聆听环境下人工耳蜗使用者的客观言语可懂度测量
Objective speech intelligibility measurement for cochlear implant users in complex listening environments.
作者信息
Santos João F, Cosentino Stefano, Hazrati Oldooz, Loizou Philipos C, Falk Tiago H
机构信息
Institut National de la Recherche Scientifique (INRS-EMT), Montreal, QC, Canada.
出版信息
Speech Commun. 2013 Sep 1;55(7-8):815-824. doi: 10.1016/j.specom.2013.04.001.
Objective intelligibility measurement allows for reliable, low-cost, and repeatable assessment of innovative speech processing technologies, thus dispensing costly and time-consuming subjective tests. To date, existing objective measures have focused on normal hearing model, and limited use has been found for restorative hearing instruments such as cochlear implants (CIs). In this paper, we have evaluated the performance of five existing objective measures, as well as proposed two refinements to one particular measure to better emulate CI hearing, under complex listening conditions involving noise-only, reverberation-only, and noise-plus-reverberation. Performance is assessed against subjectively rated data. Experimental results show that the proposed CI-inspired objective measures outperformed all existing measures; gains by as much as 22% could be achieved in rank correlation.
客观可懂度测量能够对创新语音处理技术进行可靠、低成本且可重复的评估，从而无需进行昂贵且耗时的主观测试。迄今为止，现有的客观测量方法主要集中在正常听力模型上，而诸如人工耳蜗（CI）等恢复性听力设备的应用有限。在本文中，我们评估了五种现有客观测量方法的性能，并针对一种特定测量方法提出了两种改进措施，以便在仅含噪声、仅含混响以及噪声加混响的复杂聆听条件下，更好地模拟人工耳蜗的听力情况。我们根据主观评分数据对性能进行评估。实验结果表明，所提出的受人工耳蜗启发的客观测量方法优于所有现有方法；在等级相关性方面可实现高达22%的提升。
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