Feature Extraction Using Empirical Mode Decomposition of Speech Signal
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2012, Vol 3, Issue 2
Abstract
Speech signal carries information related to not only the message to be conveyed, but also about speaker, language, emotional status of speaker, environment and so on. Speech is produced by exciting the time varying vocal tract system with a time varying excitation. Each sound is produced by a specific combination of excitation and vocal tract dynamics. This paper presents a speaker identification system using empirical mode decomposition (EMD) feature extraction method. The EMD is an adaptive multiresolution decomposition technique that appears to be suitable for non-linear, nonstationary data analysis. The EMD sifts the complex signal of time series without losing its original properties and then obtains some useful intrinsic mode function (IMF) components. The FFT is the most useful method for frequency domain feature extraction. Wavelet transform(WT) is yet another method for feature extraction.
Authors and Affiliations
Nikil V Davis
Keywords
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