Formants Estimation Techniques for Speech Analysis

Measuring formant frequencies in speech signals is indispensable for the search and technically problematic. Accurate measurement of formant frequencies is important in many studies of speech perception and production. Unfortunately, there is no totally effective method to allow good valuations of these frequencies. This paper presents a comparative study of two techniques of speech parameterization for automatically estimating the lowest three formants of voiced speech. The first technique is based on Cepstral analysis and the second on linear prediction based cepstral coefficients (LPCC) and applied to the problem of the measurement accuracy of the formant frequencies. The presented work supply a comparison between the formant frequencies of vowels obtained by our methods and typical formant frequencies, in the aim to evaluate every technique.