원문정보
보안공학연구지원센터(IJSIP)
International Journal of Signal Processing, Image Processing and Pattern Recognition
Vol.8 No.5
2015.05
pp.127-132
피인용수 : 0건 (자료제공 : 네이버학술정보)
초록
영어
A new method of energy distribution estimation in the joint time-frequency domain using the Channelized Instantaneous Frequency (CIF) and Local Group Delay (LGD) is proposed. The signal energy distribution is estimated by discarding and displacement of energy parts. The signal energy leads to high concentrated distribution in the time-frequency domain due to the relocation of the CIF and LGD values. In addition to this, a channelized instantaneous bandwidth and local group duration are used to remove undesired energy part. The channelized instantaneous bandwidth and local group duration express a local stretching of the signal in frequency and time respectively. This method is being used for speech signal analysis.
목차
Abstract
1. Introduction
2. Non-stationary Signals
3. Time-frequency Representation
3.1 Short Time Fourier Transform
3.2 Cross Spectral Method
3.3 Channelized Instantaneous Frequency & Local Group Delay
4. Number of Degrees of Freedom Density
5. Speech Signal Analysis
6. Conclusion
References
1. Introduction
2. Non-stationary Signals
3. Time-frequency Representation
3.1 Short Time Fourier Transform
3.2 Cross Spectral Method
3.3 Channelized Instantaneous Frequency & Local Group Delay
4. Number of Degrees of Freedom Density
5. Speech Signal Analysis
6. Conclusion
References
키워드
저자정보
참고문헌
자료제공 : 네이버학술정보