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.

客观可懂度测量允许对创新语音处理技术进行可靠、低成本和可重复的评估，从而免除昂贵且耗时的主观测试。迄今为止，现有的客观措施都集中在正常听力模型上，并且发现人工耳蜗 (CI) 等修复性听力仪器的用途有限。在本文中，我们评估了五种现有客观测量的性能，并对一种特定测量提出了两项​​改进，以更好地模拟 CI 听力，在涉及仅噪声、仅混响和噪声加混响的复杂聆听条件下. 性能是根据主观评价数据进行评估的。实验结果表明，所提出的受 CI 启发的客观措施优于所有现有措施；