Gao H, Zhou D, Huang D
Institute of Space Medico-Engineering, Beijing, China.
Space Med Med Eng (Beijing). 1997 Aug;10(4):235-9.
To study combined effect of noise and vibration on articulation, changes of the speech features of Chinese single syllabic utterances were investigated under combined factors. The experiments were conducted under four conditions: combined noise and vibration, simple noise, simple vibration and control. A set of signal processing system was established, programs for speech signal analysis and statistics were developed. The results showed that, as compared with simple noise , simple vibration or control condition, the fundamental frequency, energy and duration of articulation under combined conditions increased significantly. It suggests that the effect of noise and vibration should be considered in the design of aerospace speech recognition system.
为研究噪声和振动对言语清晰度的综合影响，在复合因素作用下对汉语单音节发音的语音特征变化进行了研究。实验在四种条件下进行：噪声与振动复合、单纯噪声、单纯振动及对照。建立了一套信号处理系统，开发了语音信号分析和统计程序。结果表明，与单纯噪声、单纯振动或对照条件相比，复合条件下发音的基频、能量和时长显著增加。这表明在航天语音识别系统设计中应考虑噪声和振动的影响。
