Inter- and intra-speaker variability of glottal flow derivative using the LF model
Markus R. Iseli, Abeer A. Alwan · 2000
The vowels /a, i, u/ spoken by American English talkers with non-pathological voices are described by means of voice source model parameters using the Liljencrants-Fant (LF) model. The sampling frequency of the data is 8 kHz which matches approximately telephone bandwidth. After inverse filtering, trends of voice source characteristics depending on the LF parameters are analyzed and compared to literature and listening results. Keywords: voice source, LF model, LF parameters. 1. INTRODUCTION Non-pathological voice source characteristics have been studied by inverse filtering the speech waveform [11], analyzing the speech spectra [6], or by measuring the airflow at the mouth [10]. Knowing the voice source parameters can be beneficial for many speech processing applications, such as speaker identification [8], and speech synthesis. In [6], individual and gender variations in source parameters have been analyzed using measures from speech spectra and taking into account the influence o...