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New Extraction Method of Formant Frequencies – The PES Method –

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A new method for the formant frequency extraction of vowels is presented. It is called the PES method and contains three basic operations, slotting operations, peak picking operations and a majority decision. Through these three operations, a set of parameters which represent the dominant peaks of a vowel frequency spectrum are obtained. From these parameters of a shorttime frequency, major formant frequencies are identified through curve fitting operations. In order to confirm whether the extracted formant frequencies are appropriate, two similarity measures (correlation coefficient and root mean square value) between the vowel frequency spectrum and that of the synthetic vowel, whose formant frequencies equal the extracted ones, are calculated. In most cases, the correlation coefficient 0.9 and the root mean square value 5 dB were obtained. The results of applications to natural vowels may be considered as a proof that formant frequencies are successfully and stably extracted.
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Document Type: Research Article

Publication date: November 1, 1977

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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