Speech enhancement by Kalman filtering with residual noise clipping

Wen Jin, Michael S. Scordilis

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

In this paper, we develop an improved speech enhancement system based on Kalman Filtering (KF) that processes the linear prediction (LP) residual of voiced speech. For input frames where voiced speech is present, the LP residuals are clipped to maintain the peaks where the major excitation pulses are located. The proposed algorithm differs from the conventional Kalman Filtering algorithms in that it includes this quasi-periodic term in the process equation for voiced speech frames. The quality of the resulting enhanced speech is evaluated by means of Signal-to-Noise-Ratio (SNR) and ITU-PESQ scores. Experimental results indicate that the proposed algorithm achieves consistent improvement in output speech quality when compared to conventional KF methods.

Original languageEnglish (US)
Pages (from-to)225-228
Number of pages4
JournalConference Proceedings - IEEE SOUTHEASTCON
StatePublished - Nov 9 2005
EventIEEE Southeastcon 2005: Excellence in Engineering, Science and Technology - Ft. Lauderdale, United Kingdom
Duration: Apr 8 2005Apr 10 2005

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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