The efficient discrete Tchebichef transform for spectrum analysis of speech recognition

Ferda Ernawan; Nur Azman Abu; Nanna Suryana

doi:10.1117/12.2010642

14 March 2013 The efficient discrete Tchebichef transform for spectrum analysis of speech recognition

Ferda Ernawan, Nur Azman Abu, Nanna Suryana

Proceedings Volume 8768, International Conference on Graphic and Image Processing (ICGIP 2012); 87680O (2013) https://doi.org/10.1117/12.2010642
Event: 2012 International Conference on Graphic and Image Processing, 2012, Singapore, Singapore

Abstract

Spectrum analysis is an elementary operation in speech recognition. Fast Fourier Transform (FFT) is a famous technique to analyze frequency spectrum of the signal in speech recognition. The Discrete Tchebichef Transform (DTT) is proposed as possible alternative to the FFT. DTT has lower computational complexity and it does not require complex transform with imaginary numbers. This paper proposes an approach based on 256 discrete orthonormal Tchebichef polynomials for efficient to analyze a vowel and a consonant in spectral frequency of speech recognition. The comparison between 1024 discrete Tchebichef transform and 256 discrete Tchebichef transform has been done. The preliminary experimental results show that 256 DTT has the potential to be efficient to transform time domain into frequency domain for speech recognition. 256 DTT produces simpler output than 1024 DTT in frequency spectrum. The used of 256 Discrete Tchebichef Transform can produce concurrently four formants F₁, F₂, F₃ and F₄ for the consonant.

Citation Download Citation

Ferda Ernawan, Nur Azman Abu, and Nanna Suryana "The efficient discrete Tchebichef transform for spectrum analysis of speech recognition", Proc. SPIE 8768, International Conference on Graphic and Image Processing (ICGIP 2012), 87680O (14 March 2013); https://doi.org/10.1117/12.2010642

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