Helber Andrés Carvajal Castaño



HelberHelber Andrés Carvajal Castaño
Research and Development Engineer

Title: Electronic Engineering
Office: Black River Laboratory, University of Antioquia, Carmen de viboral
Phone: (57) 301-386-85-36
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.


Current activity

Helber Andrés Carvajal Castaño received the B.Sc. degree in Electronic Engineering (2011) and the M.Sc. degree in engineering, enphasis on electronic (2014), both by the Universidad de Antioquia (UdeA). Currently, Helber is research worker in the Bioinstrumentation and Clinical Engineering Research Group (GIBIC) at Universidad de Antioquia (UdeA).

Research Areas

  • Digital speech processing.
  • Digital signal processing.
  • Noise reduction in speech signals.
  • Speech enhancement.
  • Signals theory.

Recent Publications

  • H. A. Carvajal, J. F. Vargas, and C. V. Isaza, “Noise Reduction in Automatic Detection of Hypernasality in Children,” CIT'2013 - ETCC'2013, Medellin, pp. 29–42, 2013.
  • H. A. Carvajal and N. Garcia, “Evaluation of the parameters of spectral subtraction techniques and its effects on speech signal quality,” Image, Signal Processing, and Artificial Vision (STSIVA), 2013 XVIII Symposium of. pp. 1–5, 2013.