ACOUSTIC DESCRIPTION OF A SOPRANO'S VOWELS BASED ON PERCEPTUAL LINEAR PREDICTION
Thomas John Millhouse, Frantz Clermont · 2007
A perceptually-motivated model known as Perceptual Linear Prediction (PLP, [6]) is employed to parameterise and to interpret the cardinal vowels sung by a professional soprano at pitches ranging from 220 to 880 Hz. The PLP model yields perceptual formants (F1 ′ and F2′), which encode the low and high-spectral regions, respectively. These formants are found to be tractable and robust, thereby facilitating a more complete description of the sung-vowel space. 1.