Abstract—In this paper, we implement the fundamental frequency extraction by using an exponentiated band-limited amplitude spectrum of speech. The exponent and bandwidth are adjusted according to male and female differences, characteristics of noise and noise amount. Basis function of the fundamental frequency extraction is calculated by inverse Fourier transform of an exponentiated amplitude spectrum. It is shown that this function invokes a performance robust against the white and car noise. Experimental results show that this method provides better performance than the conventional method at a wide range of signal-to noise ratios.

Index Terms—Component, fundamental frequency extraction, autocorrelation, band-limitation, exponentiated spectrum.

The authors are with School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama, 338-8570, Japan (email:abe@sie.ics.saitama-u.ac.jp, shima@sie.ics.saitama-u.ac.jp)

Cite: Saori Motegi and Tetsuya Shimamura, "Extended Fundamental Frequency Extraction Using Exponentiated Amplitude Spectrum with Band-Limitation," International Journal of Computer and Electrical Engineering vol. 4, no. 4, pp. 507-510, 2012.