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AN IMPROVED CORRECTION FORMULA FOR THE ESTIMATION OF HARMONIC MAGNITUDES AND ITS APPLICATION TO OPEN QUOTIENT ESTIMATION
 

Summary: AN IMPROVED CORRECTION FORMULA FOR THE ESTIMATION OF HARMONIC
MAGNITUDES AND ITS APPLICATION TO OPEN QUOTIENT ESTIMATION
Markus Iseli and Abeer Alwan
University of California Los Angeles
Dept. of Electrical Engineering
405 Hilgard Ave., Los Angeles, CA 90095
iseli@icsl.ucla.edu, alwan@icsl.ucla.edu
ABSTRACT
Many voice quality parameters, such as the open quotient (OQ),
depend on an accurate estimate of the source spectrum. It is known
that OQ, for example, is correlated with the magnitude difference
of the first two harmonics (H1 - H2) of the speech source spec-
trum. In order to compare OQ estimates across different vocal
tract configurations, magnitude correction, achieved by removing
the influence of vocal tract resonances, has to be used. The im-
proved correction described in this paper is inspired by a correc-
tion formula in [1]. The new correction formula accounts for the
bandwidths of all vocal tract resonances, and most importantly, is
not limited to the analysis of non-high vowels as is the case in [1].
H1 - H2 estimates, using the proposed technique with synthe-

  

Source: Alwan, Abeer - Electrical Engineering Department, University of California at Los Angeles

 

Collections: Computer Technologies and Information Sciences