汉语平均频谱噪声下的汉语语言清晰度研究  

Study of Chinese Articulation under Noise of Chinese Average Frequency Spectrum Condition

作　　者：彭健新[1] 

机构地区：[1]华南理工大学物理科学与技术学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2005年第8期71-74,共4页Journal of South China University of Technology(Natural Science Edition)

摘　　要：在不同室内声学特性、不同信噪比条件下探讨汉语语言平均频谱干扰噪声及其方向对汉语语言清晰度的影响.汉语语言清晰度测试信号与干扰噪声信号按照一定的信噪比混合,由听音人进行汉语语言清晰度主观评价.结果表明:在汉语语言平均频谱干扰噪声作用下,听音位置的声场特性、信噪比和干扰噪声源方向对汉语语言的清晰度有显著影响;相比于房间声学特性和干扰噪声源方向,信噪比对汉语语言清晰度的影响更为显著;汉语语言清晰度随听音位置声场特性的改善和信噪比的提高而提高,随语言信号与噪声位置分开的角度的增大而提高.The effects of the noise source and its direction of Chinese speech average frequency spectrum on the intelligibility of Chinese speech were discussed in different room acoustical characteristics and signal-to-noise ratio （SNR） conditions. The test signals were mixed with the noise signals in accordance with a given SNR and the intelligibility was then rated by listeners. The results show that, in noise condition, the room acoustical characteristics in listening positions, the SNR and the direction of noise source all have significant effects on the intelligibility of Chinese speech, and the effect of SNR is the most significant. The results also show that the intelligibility increases with the improvement of the room acoustical characteristics in listening positions, the increase in SNR , and the increase in the separate angle between the signal and the noise.

关 键 词：汉语语言 平均频谱 噪声 声学特性 信噪比 语言清晰度 

分 类 号：TU112.2[建筑科学—建筑理论] O429[理学—声学]