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Acoustic Echo Cancellation Technique for VoIP

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Advances in Signal Processing and Intelligent Recognition Systems

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 425))

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Abstract

Acoustic Echo Canceller (AEC) is a crucial element to eliminate acoustic echo in a Voice over Internet Protocol (VoIP) communication. In the past, AEC have been implemented on Digital Signal Processing (DSP) platforms. This work uses software to perform the very demanding real-time signal processing that stack up against traditional implementation of AEC. Several issues are taken into consideration in the design of the AEC software. First, the AEC software is able to handle a mismatch in sampling rate between A/D and D/A conversion. Second, the playback sampling rate of playing CD-quality music with voice chat is considered. Third, the AEC has to overcome the major challenge of separating the reference signal in the presence of noise. Finally, the computational complexity and convergence problem has to be minimal. This work presents an AEC method that enable optimal audio quality in VoIP.

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Correspondence to Balasubramanian Nathan or Sabri M. Hansi .

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Nathan, B., Chong, YW., Hansi, S.M. (2016). Acoustic Echo Cancellation Technique for VoIP. In: Thampi, S., Bandyopadhyay, S., Krishnan, S., Li, KC., Mosin, S., Ma, M. (eds) Advances in Signal Processing and Intelligent Recognition Systems. Advances in Intelligent Systems and Computing, vol 425. Springer, Cham. https://doi.org/10.1007/978-3-319-28658-7_29

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  • DOI: https://doi.org/10.1007/978-3-319-28658-7_29

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-28656-3

  • Online ISBN: 978-3-319-28658-7

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