Integrated echo and noise canceler for hands-free applications

Seon Joon Park, Chom Gun Cho, Chungyong Lee, Dae Hee Youn

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


An integrated acoustic echo and noise canceler is proposed for hands-free telephony Applications. The proposed system includes a computationally efficient double-talk detection (DTD) method and a residual echo cancellation algorithm. The DTD method uses two cross-correlation coefficients and is robust in adverse conditions. In the residual echo cancellation approach, a linear prediction error filter removes the short-term correlation of the residual echo and the resulting whitened residual echo is canceled by a noise-reduction filter. The proposed system was implemented using a general purpose digital signal processor (DSP) with 16-b arithmetic.

Original languageEnglish
Pages (from-to)188-195
Number of pages8
JournalIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
Issue number3
Publication statusPublished - 2002 Mar

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering


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