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communication Between speech Production and Perception Within the Brain--Observation and Simulation

Journal of Computer Science & Technology 2006年第1期21卷 95-105页

作者：党建武赤木正人本多清志 Japan Advanced Institute of Science and Technology Ishikawa Japan ATR Human Information Science Laboratories Kyoto Japan

Realization of an intelligent human-machine interface requires us to investigate human mechanisms and learn from them. This study focuses on communication between speech production and perception within human brain and realizing it in an artificial system. A physiological research study based on electromyographic signals （Honda, 1996） suggested that speech communication in human brain might be based on a topological mapping between speech production and perception, according to an analogous topology between motor and sensory representations. Following this hypothesis, this study first investigated the topologies of the vowel system across the motor, kinematic, and acoustic spaces by means of a model simulation, and then examined the linkage between vowel production and perception in terms of a transformed auditory feedback （TAF） experiment. The model simulation indicated that there exists an invariant mapping from muscle activations （motor space） to articulations （kinematic space） via a coordinate consisting of force-dependent equilibrium positions, and the mapping from the motor space to kinematic space is unique. The motor-kinematic-acoustic deduction in the model simulation showed that the topologies were compatible from one space to another. In the TAF experiment, vowel production exhibited a compensatory response for a perturbation in the feedback sound. This implied that vowel production is controlled in reference to perception monitoring.

关键词： speech communication human mechanism speech production speech perception

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Identifying and managing risks of AI-driven operations:A case study of automatic speech recognition for improving air traffic safety

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Chinese Journal of Aeronautics 2023年第4期36卷 366-386页

作者： Yi LIN Min RUAN Kunjie CAI Dan LI Ziqiang ZENG Fan LI Bo YANG College of Computer Science Sichuan UniversityChengdu 610045China Southwest Air Traffic Management Bureau Civil Aviation Administration of ChinaChengdu 610000China Business School Sichuan UniversityChengdu 610045China Key Laboratory of Flight Techniques and Flight Safety CAACCivil Aviation Flight University of ChinaGuanghan 618307China

In this work,the primary focus is to identify potential technical risks of Artificial Intel-ligence(AI)-driven operations for the safety monitoring of the air traffic from the perspective of speech communication by studying the representative case and evaluating user *** case study is performed to evaluate the AI-driven techniques and applications using objective metrics,in which several risks and technical facts are obtained to direct future *** the safety–critical specificities of the air traffic control system,a comprehensive subjective evaluation is conducted to collect user experience by a well-designed anonymous questionnaire and a face-to-face *** this procedure,the potential risks obtained from the case study are confirmed,and the impacts on human working are *** the case study and the evaluation of user experience provide compatible results and conclusions:(A)the proposed solution is promising to improve the traffic safety and reduce the workload by detecting potential risks in advance;(B)the AI-driven techniques and whole diagram are suggested to be enhanced to eliminate the possible distraction to the attention of air traffic ***,a variety of strategies and approaches are discussed to explore their capability to advance the proposed solution to industrial practices.

关键词： Air traffic management Data-driven techniques Safety monitoring speech communication Technical risks

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A New Method of Reducing Assembly Delay of speech Packets

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The Journal of China Universities of Posts and Telecommunications 2001年第4期8卷 34-41页

作者： YANG Zhen (Nanjing University of Posts and Telecommunications, Nanjing 210003, P.R. China) Nanjing University of Posts and Telecommunications Nanjing 210003 P.R. China

Voice over IP ( VoIP ) and Voice over ATM ( VoA ) are two research hotspots in the fields of communication technology. One of the main problems degrading the QoS in VoIP and VoA is the longer time delay when speech packets are transmitted from a speaker to a listener. This paper discusses in detail the composition of time delay and the influence of different parts of delay on speech quality under IP and ATM network environments. The author puts forward a new method to convert usual CBR code streams into VBR streams for the purpose of reducing time delay from one terminal to another, which can avoid the dilemma between compressing the bit rates of speech sources and reducing assembly delay of speech packets.

关键词： speech communication CBR and VBR code streams time delay

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