A New Post-Filtering Algorithm for Residual Acoustic Echo Cancellation in Hands-Free Mobile Application(<Special Section>Mobile Multimedia Communications)

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概要

• 論文の詳細を見る

• We consider a new post-filtering algorithm for residual acoustic echo cancellation in hands-free application. The new post-filtering algorithm is composed of AR analysis, pitch prediction, and noise reduction algorithm. The residual acoustic echo is whitened via AR analysis and pitch prediction during no near-end talker period and then is cancelled by noise reduction algorithm. By removing speech characteristics of the residual acoustic echo, noise reduction algorithm reduces the power of the residual acoustic echo as well as the ambient noise. For the hands-free application in the moving car, the proposed system attenuated the interferences more than 15 dB at a constant speed of 80 km/h.

• 社団法人電子情報通信学会の論文
• 2004-05-01

著者

• BAEK Seong-Joon

  Department of Electronics Engineering, Chonnam National Univ.

• KANG Sangki

  Telecommuniation R & D Center, Samsung Electronics

• Kang Sangki

  Telecommunication R&d Center Samsung Electronics Co. Ltd.

• Baek Seong-joon

  Department Of Electronics Engineering Chonnam National Univ.

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• Improved Global Soft Decision Using Smoothed Global Likelihood Ratio for Speech Enhancement(Multimedia Systems for Communications)
• Filtering of a Dissonant Frequency Based on Improved Fundamental Frequency Estimation for Speech Enhancement(Digital Signal Processing)
• A New Post-Filtering Algorithm for Residual Acoustic Echo Cancellation in Hands-Free Mobile Application(Mobile Multimedia Communications)
• Integrated Dissonant Frequency Filtering and Noise Reduction for Improving Perceptual Quality of Noisy Speech and Husky Voice(Speech and Hearing)

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