Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
ANALYSIS AND SYNTHESIS OF AMPLITUDE MODULATION COMPONENTS IN PATHOLOGICAL
 

Summary: ANALYSIS AND SYNTHESIS OF AMPLITUDE
MODULATION COMPONENTS IN PATHOLOGICAL
VOICES
Brian Gabelman and Abeer Alwan
Department of Electrical Engineering, UCLA
Los Angeles 90095, USA
Gabelman@ucla.edu, alwan@icsl.ucla.edu
ABSTRACT
Previous work [1] addressed analysis and synthesis of the FM
and aspiration noise components of pathological voices. The
current study refines the previous analysis and adds amplitude
modulation to model non-periodic components. The cepstral
aspiration noise estimate is improved by removal of HFPV (high
frequency pitch variation) from the original voice prior to
estimating the noise. Amplitude and pitch pulse power tracking
are performed on a pulse-by-pulse basis to accurately estimate
the power time series, which is then segregated into low
frequency power variation and high frequency power variation
(shimmer). These AM effects are then also removed from the
original voice and cepstral noise analysis is applied to estimate

  

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

 

Collections: Computer Technologies and Information Sciences