Abstract
The running autocorrelation function (r-ACF) is obtained by the FFT method based on the Wiener-Khinchine theorem after obtaining the power density spectrum for a signal. This study attempted to reconstruct the original speech signal by using a part of its r-ACF. First the stationary part of the vowel signals were investigated to determine until which delay time of the ACF (maximum time lag) is necessary to recognize the reconstructed signals as the original ones. Then the continuous speech signals were investigated to determine the appropriate integration interval as well as the maximum time lag.
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