Echo Cancellation for Hands-Free Systems

Ferreira, Artur J.; Marques, Paulo

doi:10.5772/19238

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2018

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“…Echo signal is defined as the delayed and attenuated version of the original signal produced by some device, such as a loud speaker. If we consider the transmitted signal x(t), then the attenuated and delayed version of it is the echo signal and it is given by the following (1) [1]: xd(t) = αx(t − td)…”

Section: Introductionmentioning

confidence: 99%

Hardware Implementation for the Echo Canceller System based Subband Technique using TMS320C6713 DSP Kit

Zubaidy¹,

Thanoon²

2018

ijacsa

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Abstract-The acoustic echo cancellation system is very important in the communication applications that are used these days; in view of this importance we have implemented this system practically by using DSP TMS320C6713 Starter Kit (DSK). The acoustic echo cancellation system was implemented based on 8 subbands techniques using Least Mean Square (LMS) algorithm and Normalized Least Mean Square (NLMS) algorithm. The system was evaluated by measuring the performance according to Echo Return Loss Enhancement (ERLE) factor and Mean Square Error (MSE) factor.

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Section: Introductionmentioning

confidence: 99%