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Summary: Inter- and Intra-speaker Variability of Glottal Flow Derivative
using the LF Model
Markus R. Iseli and Abeer Alwan
Dept. of Electrical Engineering UCLA
Los Angeles, 90095
ABSTRACT
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 approxi-
mately 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
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