@InProceedings{Kathiresan2017_229,
author = {Thayabaran Kathiresan and Dieter Maurer and Heidy Suter and Volker Dellwo:},
booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2017},
title = {Enhancing the Objectivity of Interactive Formant Estimation: Introducing Euclidean Distance Measure and Numerical Conditions for Numbers and Frequency Ranges of Formants},
year = {2017},
editor = {Jürgen Trouvain and Ingmar Steiner and Bernd Möbius},
month = mar,
pages = {130--137},
publisher = {TUDpress, Dresden},
abstract = {Current formant measurement studies of vowel sounds generally use a
Linear Predictive Coding (LPC) algorithm and rely on an interactive method of formant
estimation which includes a comparison of measured formant tracks and characteristics
of the spectrogram. Thereby, the selection of LPC parameters is based on
the assumption that the number of poles for the analysis of a given frequency range
is age- and gender-specific. However, when crosschecking measured formant tracks
with the spectrogram, mismatches occur in a significant number of cases. In these
cases, the investigators try to minimize these mismatches by modifying the number
of poles of LPC. Such an interaction is based on phonetic knowledge, analytical experience
and related expectations. Several authors have pointed towards the lack of
objectivity and the inherent circularity as well as the fact that similar formant estimations
performed by different researchers may yield different results. As of yet, the issue
of an improvement and objectification of formant estimation procedure is still a
matter of debate. The present paper describes such a corresponding approach: basing
the LPC pole-number selection on objective criteria by introducing Euclidean distance
measure and formant frequency conditions as references for interactive formant
frequency estimation. The paper further presents and discusses the results of a pilot
evaluation using the method proposed on 224 long Standard German vowel sounds
/i-y-e-ø-ɛ-a-o-u/ produced by eight children, ten women and ten men on fundamental
frequencies of 262 Hz (children), 220 Hz (women) and 131 Hz (men), respectively.},
isbn = {978-3-959080-92-7},
issn = {0940-6832},
keywords = {Poster},
url = {https://www.essv.de/pdf/2017_130_137.pdf},
}