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《Journal of Beijing Polytechnic University》 2003-02
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Telephone Speech Simulation Using Signal Processing Method

ZUO Guo-yu, LIU Wen-ju, RUAN Xiao-gang ( 1.National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100080, China; 2.College of Electronics Information and Control Engineering, Beijing University of Technology, Beijing 100022, China )  
Owing to the lack of telephone speech data, this paper proposes a software simulation implementation of converting clean speech sounds into telephone-quality ones. Filter design technology is adopted to simulate the frequency response characteristics of various analogue transmission equipments in telephone circuit connection and to make simulation study on such telephone speech phenomena as different noise behaviours in telephone channels. The spectral distortion analysis and recognition experiment results show that through the reasonable setting and regulating, the algorithm can effectively realize the approximate simulation from clean speech to telephone-quality ones so that the simulated speech sounds generated from clean data can achieve as good recognition performance as real speech.
【Fund】: 国家自然科学基金(60172055);; 中国科学院自动化所领域前沿基金(1M02J05)
【CateGory Index】: TN912.3
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