Vol. 3 Issue 1
Year:2015
Issue:Jan-Mar
Title:Echo Cancellation Using Different Adaptive Algorithm in Digital Signal Processing
Author Name:Hitesh Verma and Nitin Naiyar
Synopsis:
The problem of echo is foremost in today’s telecommunication systems. It generally occurs in full duplex mode means when source and sink both communicate at a time. Hands-free loudspeaker telephone is a common example. It can also be seen in case of speech. In this situation the signal which is received is output through the telephone loudspeaker, the original signal is reverberated because of unwanted signal called echo. This effect in time delayed and attenuated original signal to the user. Because of this echo the signal interference caused to both user side which cause reduction in quality of signal. This interference distract to both users. Therefore, the more important task is cancellation of this echo to get signal without degradation in signal quality. This paper focus on the use of adaptive filter techniques to reduce this unwanted echo, results in increasing communication quality. A class of filters that iteratively alter its parameters is adaptive filter which is used in order to minimize a function of the difference between a desired target output and their own output. Comparison analysis of all adaptive filter algorithms is done for echo cancellation in this paper.
Year:2015
Issue:Jan-Mar
Title:Echo Cancellation Using Different Adaptive Algorithm in Digital Signal Processing
Author Name:Hitesh Verma and Nitin Naiyar
Synopsis:
The problem of echo is foremost in today’s telecommunication systems. It generally occurs in full duplex mode means when source and sink both communicate at a time. Hands-free loudspeaker telephone is a common example. It can also be seen in case of speech. In this situation the signal which is received is output through the telephone loudspeaker, the original signal is reverberated because of unwanted signal called echo. This effect in time delayed and attenuated original signal to the user. Because of this echo the signal interference caused to both user side which cause reduction in quality of signal. This interference distract to both users. Therefore, the more important task is cancellation of this echo to get signal without degradation in signal quality. This paper focus on the use of adaptive filter techniques to reduce this unwanted echo, results in increasing communication quality. A class of filters that iteratively alter its parameters is adaptive filter which is used in order to minimize a function of the difference between a desired target output and their own output. Comparison analysis of all adaptive filter algorithms is done for echo cancellation in this paper.
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