Paper Info
Title
An optimum algorithm for adaptive filtering on acoustic echo cancellation using TMS320C6713 DSP
Abstract
In this study, it is aimed to enhance the intelligibility of speech by canceling out the echo noise. For this purpose, the data transfer software, which is necessary for real time processing of voice signals, and the adaptive filtering algorithm software for the application of acoustic echo cancellation have been developed. An algorithm has been proposed for the determination of optimum adaptation rate (@m) for the least-mean-square (LMS) adaptation algorithm that is used in the adaptive filter. The effectiveness of our optimum @m value determination algorithm was demonstrated on a single direction voice conference application with one speaker. In this study, we used a DSP card (TMS320C6713), a Laptop computer, an amplifier, a loudspeaker and two microphones in two applications. In the first application, two microphones were placed close to the loudspeaker, while in the other application, one microphone was placed close to loudspeaker and speech trial was implemented in the far-end microphone. Output of the adaptive filter was observed for @m values of 0, 0.1, 100 and optimum (a value between 0.01 and 100). The best results in the adaptive filter were obtained from optimum @m value.
Year
DOI
Venue
2010
10.1016/j.dsp.2009.05.001
Digital Signal Processing
Keywords
Field
DocType
Adaptation rate,optimum adaptation rate,FIR filter,adaptation algorithm,far-end microphone,algorithm software,LMS algorithm,adaptive filter,data transfer software,m value determination algorithm,Echo cancellation,DSP,Adaptive filtering,m value,optimum algorithm,acoustic echo cancellation,echo noise
Least mean squares filter,Digital signal processing,Computer science,Algorithm,Kernel adaptive filter,Adaptive filter,Loudspeaker,Finite impulse response,Microphone,Intelligibility (communication)
Journal
Volume
Issue
ISSN
20
1
Digital Signal Processing
Citations 
PageRank 
References 
1
0.36
4
Authors
2
Name
Order
Citations
PageRank
Yüksel Ozbay131217.03
Ahmet Reşit Kavsaoğlu2242.03