PMID- 17078942
OWN - NLM
STAT- MEDLINE
DCOM- 20070629
LR  - 20070131
IS  - 0010-4825 (Print)
IS  - 0010-4825 (Linking)
VI  - 37
IP  - 4
DP  - 2007 Apr
TI  - Wavelet time-frequency analysis and least squares support vector machines for the 
      identification of voice disorders.
PG  - 571-8
AB  - This work describes a novel algorithm to identify laryngeal pathologies, by the 
      digital analysis of the voice. It is based on Daubechies' discrete wavelet 
      transform (DWT-db), linear prediction coefficients (LPC), and least squares 
      support vector machines (LS-SVM). Wavelets with different support-sizes and three 
      LS-SVM kernels are compared. Particularly, the proposed approach, implemented 
      with modest computer requirements, leads to an adequate larynx pathology 
      classifier to identify nodules in vocal folds. It presents over 90% of 
      classification accuracy and has a low order of computational complexity in 
      relation to the speech signal's length.
FAU - Fonseca, Everthon Silva
AU  - Fonseca ES
AD  - SEL/EESC/USP and IFSC/USP - Department of Electrical Engineering, School of 
      Engineering at Sao Carlos and Institute of Physics at Sao Carlos, University of 
      Sao Paulo, SP, Brazil. everthon@sel.eesc.usp.br
FAU - Guido, Rodrigo Capobianco
AU  - Guido RC
FAU - Scalassara, Paulo Rogerio
AU  - Scalassara PR
FAU - Maciel, Carlos Dias
AU  - Maciel CD
FAU - Pereira, Jose Carlos
AU  - Pereira JC
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20061031
PL  - United States
TA  - Comput Biol Med
JT  - Computers in biology and medicine
JID - 1250250
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Aged
MH  - *Algorithms
MH  - Child
MH  - Child, Preschool
MH  - Computer Graphics
MH  - Female
MH  - Humans
MH  - Laryngeal Diseases/diagnosis
MH  - *Least-Squares Analysis
MH  - Linear Models
MH  - Male
MH  - Mathematical Computing
MH  - Middle Aged
MH  - Phonetics
MH  - Reference Values
MH  - *Signal Processing, Computer-Assisted
MH  - *Sound Spectrography
MH  - Speech Production Measurement
MH  - Voice Disorders/*diagnosis
EDAT- 2006/11/03 09:00
MHDA- 2007/06/30 09:00
CRDT- 2006/11/03 09:00
PHST- 2006/11/03 09:00 [pubmed]
PHST- 2007/06/30 09:00 [medline]
PHST- 2006/11/03 09:00 [entrez]
AID - S0010-4825(06)00139-9 [pii]
AID - 10.1016/j.compbiomed.2006.08.008 [doi]
PST - ppublish
SO  - Comput Biol Med. 2007 Apr;37(4):571-8. doi: 10.1016/j.compbiomed.2006.08.008. 
      Epub 2006 Oct 31.