W-disjoint orthogonality based residual acoustic echo cancellation for hands-free communication

Yoonjae Lee, Kihyeon Kim, Jongsung Yoon, Hanseok Ko

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A simple and novel residual acoustic echo cancellation method that employs binary masking is proposed to enhance the speech quality of hands-free communication in an automobile environment. In general, the W-disjoint orthogonality assumption is used for blind source separation using multi-microphones. However, in this Letter, it is utilized to mask the residual echo component in the time-frequency domain using a single microphone. The experimental results confirm the effectiveness of the proposed method in terms of the echo return loss enhancement and speech enhancement.

Original languageEnglish
Pages (from-to)2129-2132
Number of pages4
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number8
Publication statusPublished - 2009 Aug


  • Acoustic echo cancellation system
  • Residual acoustic echo cancellation
  • W-disjoint orthogonality

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics


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