International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Short Communication

A comparison between minimum-statistics and soft-decision noise estimation methods

Roohollah Abdipour and Siamak Rasoulzadeh*      
Department of Computer Engineering, Malayer Branch, Islamic Azad University, Malayer, Iran.    
Email: [email protected]

  •  Accepted: 02 September 2011
  •  Published: 02 October 2011


Speech enhancement has been used in a variety of applications such as mobile phones, hearing aids and speech recognition systems. One of the most fundamental steps in manyspeech enhancement methods is noise estimation. Inexact noise estimation results in undesired effects in the enhanced signal. While over-estimating the noise leads to speech distortion, noise under-estimation leaves some annoying noise in the enhanced signal. Recently, minimum-statistics and soft-decision noise estimation methods have been paid high attention. In this paper, we evaluate these methods and compare their performance in speech+noise conditions.


Key words: Noise estimation, speech enhancement, minimum statistics, soft decision.