ABSTRACT:

This paper presents a new class of adaptive filtering algorithms to solve the stereophonic acoustic echocancelation (AEC) problem in teleconferencing systems. While stereophonic AEC may be seen as a simple generalization of the well-known single-channel AEC, it is a fundamentally far more complex and challenging problem to solve. The main reason being the strong cross correlation that exists between the two input audio channels. In the past, nonlinearities have been introduced to reduce this correlation. However, nonlinearities bring with it additional harmonics that are undesirable. We propose an elegant linear technique to decorrelate the two-channel input signals and thus avoid the undesirable nonlinear distortions. We derive two low complexity adaptive algorithms based on the two-channel gradient lattice algorithm. The models assume the input sequences to the adaptive filters to be autoregressive (AR) processes whose orders are much lower than the lengths of the adaptive filters. This results in an algorithm, whose complexity is only slightly higher than the normalized least-mean-square (NLMS) algorithm; the simplest adaptive filtering method. Simulation results show that the proposed algorithms perform favorably when compared with the state-of-the-art algorithms.


Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here


PROJECT TITLE :In-Memory Stream Indexing of Massive and Fast Incoming Multimedia Content - 2018ABSTRACT:In this text, a media storm indexing mechanism is presented, where media storms are outlined as quick incoming batches. We
PROJECT TITLE :Fast Low-Rank Bayesian Matrix Completion With Hierarchical Gaussian Prior Models - 2018ABSTRACT:The problem of low-rank matrix completion is taken into account in this Project. To use the underlying low-rank structure
PROJECT TITLE :A Fast Converging Channel Estimation Algorithm for Wireless Sensor Networks - 2018ABSTRACT:A group-membership affine projection algorithm is proposed which will estimate a complicated-valued channel matrix using
PROJECT TITLE :Fast Cell Discovery in mm-Wave 5G Networks with Context Information - 2018ABSTRACT:The exploitation of mm-wave bands is one amongst the key-enabler for 5G mobile radio networks. However, the introduction of mm-wave
PROJECT TITLE :Fast and Reliable Restoration Method of Virtual Resources on OpenStack - 2018ABSTRACT:We propose a quick and reliable restoration technique of virtual resources on OpenStack when physical servers or virtual machines

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry