模拟航天环境对发音人语音特征的影响

Effects of Simulated Environment of Spaceflight on Phonetic Features of Speech

目的研究模拟航天应激环境对发音人语音特征的影响。方法在72h心理隔绝及睡眠剥夺实验,密闭舱60d试验,以及头低位60d模拟失重试验中,录制受试者的语音,并进行分析。结果在3种应激环境下,烦躁情绪的出现与基频的变化具有一定的一致性,音节时长、短时能量的变化与时间节点有关。结论根据特征参数改变规律,可为进一步的应激语音情绪识别奠定理论基础。

Objective To study changes of phonetic features of mandarin speech when the talker is in stressed environment of spaceflight.Methods The mandarin speech database was established from volunteers speech in 72 h psychological isolation sleep deprivation experiment,60 d head-down-tilt bed-rest experiment and 60 d sealed module experiment.The phonetic features were fundamental frequency,syllable duration and short-term energy of speech.Results In above three kinds of stressed environments,the changes of fundamental frequency were correlated with appearance of annoyance emotion of volunteers.But changes of syllable duration and short-term energy were related to different time points during experiments.Conclusion According to the findings,acoustic changes of speech under simulated environment of spaceflight may provide important reference to the study of emotional speech recognition in spaceflight for the future.