Advances in Non-Linear Modeling for Speech Processing

Advances in Non-Linear Modeling for Speech Processing

4.11 - 1251 ratings - Source

Advances in Non-Linear Modeling for Speech Processing includes advanced topics in non-linear estimation and modeling techniques along with their applications to speaker recognition. Non-linear aeroacoustic modeling approach is used to estimate the important fine-structure speech events, which are not revealed by the short time Fourier transform (STFT). This aeroacostic modeling approach provides the impetus for the high resolution Teager energy operator (TEO). This operator is characterized by a time resolution that can track rapid signal energy changes within a glottal cycle. The cepstral features like linear prediction cepstral coefficients (LPCC) and mel frequency cepstral coefficients (MFCC) are computed from the magnitude spectrum of the speech frame and the phase spectra is neglected. To overcome the problem of neglecting the phase spectra, the speech production system can be represented as an amplitude modulation-frequency modulation (AM-FM) model. To demodulate the speech signal, to estimation the amplitude envelope and instantaneous frequency components, the energy separation algorithm (ESA) and the Hilbert transform demodulation (HTD) algorithm are discussed. Different features derived using above non-linear modeling techniques are used to develop a speaker identification system. Finally, it is shown that, the fusion of speech production and speech perception mechanisms can lead to a robust feature set.We are thankful to Dr. S. R. Kajale, Director, Shri Guru Gobind Singhji Institute of Engineering and Technology, Nanded ... of Engineering and Technology, Nanded as well as Department of Electronics and Telecommunication Engineering, anbsp;...

Title:Advances in Non-Linear Modeling for Speech Processing
Author:Raghunath S. Holambe, Mangesh S. Deshpande
Publisher:Springer Science & Business Media - 2012-02-21


You Must CONTINUE and create a free account to access unlimited downloads & streaming