Shi Lixin

Dalian Nationalities University, Lü-ta-shih, Liaoning, China

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Publications (2)0 Total impact

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    ABSTRACT: Fundamental frequency estimation(FFE) has been studied for many years, and current techniques are still not accurate and robust. Because of the fundamental frequency losing, the harmonic losing and the inharmonicity of piano sound, these FFE methods are invalid generally. The mean square error of the harmonic frequency based on quadratic interpolation of FFT is discussed, and the influence of other harmonic sidelobe on the harmonic measurement with the different length Hanning, Hamming, Chebyshev and Blackmanharris windows is analyzed. A FFE algorithm using weighted least square method is derived. The simulation experiment shows that the method is feasible, and the relative error is about 10<sup>-5</sup>.
    Information Technology and Applications, 2009. IFITA '09. International Forum on; 06/2009
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    ABSTRACT: The CANoe is adopted to finish the VRV-CAN network simulation system design so as to solve the problem of too many communication nodes, complex communication content within the system. The simulation procedure and means in CANoe are described with emphasis on the discussion of network architecture, communication protocol and network load ratio. The simulation results are presented. Through the system simulation, the communication protocol and design scheme are verified and the development speed is increasingly improved.