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对14位正常听力者开展了环境声的人工耳蜗仿真声识别实验,比较了两类声码器仿真(正弦载波和噪声载波)条件下的环境声识别效果差异,然后对9位讲普通话的成年人工耳蜗植入者开展了环境声识别实验。实验材料是从互联网上搜集,并经过12位正常听力者主观测试验证后,筛选出的67种环境声。结果显示,载波类型没有对67种环境声的平均识别效果产生显著影响,但是声学特征的差异会导致单个环境声的识别效果对载波类型有依赖。另外,人工耳蜗植入者的环境声识别效果较差,有待通过信号处理策略、神经接口和康复手段的改进而得到提高。本研究中开发的环境声材料可以用于评估人工耳蜗环境声识别效果。
14 normal audiologists conducted a cochlear artificial voice recognition experiment on ambient sound and compared the difference in environmental sound recognition between the two types of vocoder simulations (sine carrier and noise carrier). Then, Cochlear implant recipients conducted environmental sound recognition experiments. The experimental materials were collected from the Internet and filtered through 67 subjective tests of 12 normal audiophiles. The results show that the carrier type does not have a significant effect on the average recognition effect of 67 kinds of environmental sounds, but the difference of acoustic characteristics will lead to the recognition effect of single ambient sound dependent on the carrier type. In addition, cochlear implants are less effective in recognizing environmental sounds and need to be improved through improvements in signal processing strategies, neural interfaces, and rehabilitation. The environmental acoustic material developed in this study can be used to assess the effect of cochlear environmental sound recognition.