Single-channel speech enhancement method using reconstructive NMF with spectrotemporal speech presence probabilities

Seongjae Lee, David K. Han, Hanseok Ko

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this paper, a novel single microphone channel-based speech enhancement technique is presented. While most of the conventional nonnegative matrix factorization-based approaches focus on generating a basis matrix of speech and noise for enhancement, the proposed algorithm performs an additional process to reconstruct speech from noisy speech when these two elements are highly overlapped in selected spectral bands. This process involves a log-spectral amplitude based estimator, which provides the spectrotemporal speech presence probability to obtain a more accurate reconstruction. Moreover, the proposed algorithm applies an unsupervised learning method to the input noise, so it is adaptable to any type of environmental noise without a pre-trained dictionary. The experimental results demonstrate that the proposed algorithm obtains improved speech enhancement performance compared with conventional single channel-based approaches.

Original languageEnglish
JournalApplied Acoustics
DOIs
Publication statusAccepted/In press - 2015 Aug 31

Keywords

  • Acoustic source separation
  • Noise reduction
  • Speech enhancement

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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