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Papers by Lee Lung Cheng

Research paper thumbnail of GPS carrier phase measurement method based on data transition detection in high dynamic circumstance

The problems met in highly dynamic conditions while measuring GPS carrier phase and detecting dat... more The problems met in highly dynamic conditions while measuring GPS carrier phase and detecting data transition are analyzed. The signal parameters are estimated through an extended Kalman filter (EKF) algorithm. A simple data transition and parameter correction method is studied vigorously. The tracking performance and tracking error of this simple method are simulated and compared with a no data transition detection method. The simulation shows that this data transition method conduces to improving the precision of phase estimation, and the dynamic performance of the algorithm is ameliorative too

Research paper thumbnail of Study on the affective property of music

Chaos Solitons & Fractals, 2005

In this paper, we obtain human psychological data through emotional tests on different kinds of m... more In this paper, we obtain human psychological data through emotional tests on different kinds of music, and use factor analysis approach to find out three major factors that can truly represent the primary affective properties of music. Based on these three factors, the test music can further be classified into two groups using cluster analysis. By analyzing these music test data using short-time processing and comparing the classification results obtained from cluster analysis, both results are consistent, which indicates that a computer model for perceiving the affective characteristics of music can be established. A verification procedure is also conducted to support our conclusion.

Research paper thumbnail of Harmonious graphics generating based on the 1/ f function theory

Chaos Solitons & Fractals, 2007

In the 1970s, Richard Voss and John Clarke researched the actual audio physical sound of music. T... more In the 1970s, Richard Voss and John Clarke researched the actual audio physical sound of music. There are three types of noise: white noise, 1/f noise, and Brownian motion noise (1/f 2 ). 1/f noise is found to be most pleasing to human ears. White noise is too random and Brownian noise is too correlated. Similarly, for 2-dimensional sources such as graphics and images, three characteristics of monotonous, harmony and muss are also observed. The 1/f fluctuation theory provides a good way to generate affective signals both for 1-dimensional and 2-dimensional signals. This paper provides an algorithm which can generate affective patterns or graphics and obey the criteria of affective information processing.

Research paper thumbnail of New methods for Fourier analysis and Fourier synthesis

IEEE Signal Processing Letters, 1999

A basic and important relation between square wave and sine-cosine function is presented. This re... more A basic and important relation between square wave and sine-cosine function is presented. This relation leads to completely new methods for Fourier analysis and Fourier synthesis.

Research paper thumbnail of GPS carrier phase measurement method based on data transition detection in high dynamic circumstance

The problems met in highly dynamic conditions while measuring GPS carrier phase and detecting dat... more The problems met in highly dynamic conditions while measuring GPS carrier phase and detecting data transition are analyzed. The signal parameters are estimated through an extended Kalman filter (EKF) algorithm. A simple data transition and parameter correction method is studied vigorously. The tracking performance and tracking error of this simple method are simulated and compared with a no data transition detection method. The simulation shows that this data transition method conduces to improving the precision of phase estimation, and the dynamic performance of the algorithm is ameliorative too

Research paper thumbnail of Study on the affective property of music

Chaos Solitons & Fractals, 2005

In this paper, we obtain human psychological data through emotional tests on different kinds of m... more In this paper, we obtain human psychological data through emotional tests on different kinds of music, and use factor analysis approach to find out three major factors that can truly represent the primary affective properties of music. Based on these three factors, the test music can further be classified into two groups using cluster analysis. By analyzing these music test data using short-time processing and comparing the classification results obtained from cluster analysis, both results are consistent, which indicates that a computer model for perceiving the affective characteristics of music can be established. A verification procedure is also conducted to support our conclusion.

Research paper thumbnail of Harmonious graphics generating based on the 1/ f function theory

Chaos Solitons & Fractals, 2007

In the 1970s, Richard Voss and John Clarke researched the actual audio physical sound of music. T... more In the 1970s, Richard Voss and John Clarke researched the actual audio physical sound of music. There are three types of noise: white noise, 1/f noise, and Brownian motion noise (1/f 2 ). 1/f noise is found to be most pleasing to human ears. White noise is too random and Brownian noise is too correlated. Similarly, for 2-dimensional sources such as graphics and images, three characteristics of monotonous, harmony and muss are also observed. The 1/f fluctuation theory provides a good way to generate affective signals both for 1-dimensional and 2-dimensional signals. This paper provides an algorithm which can generate affective patterns or graphics and obey the criteria of affective information processing.

Research paper thumbnail of New methods for Fourier analysis and Fourier synthesis

IEEE Signal Processing Letters, 1999

A basic and important relation between square wave and sine-cosine function is presented. This re... more A basic and important relation between square wave and sine-cosine function is presented. This relation leads to completely new methods for Fourier analysis and Fourier synthesis.

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