Abstract
Acoustic noise and echo cancellation using two adaptive filters and the least-mean-square (LMS) algorithm is the most effective technique of reducing acoustic noises and echoes in a hands-free telephone system. Unfortunately, high order filters are required in this traditional structure, which results in high cost, slow convergence, and high excess mean-square and numerical errors. The paper presents a new acoustic noise and echo cancellation microphone (ANECM) system, which consists of two closely-spaced directional microphones pointing in opposite directions and two low order adaptive filters. By using two highly correlated microphone signals, the ANECM system provides satisfied performance at much lower cost than the traditional techniques. To test and perfect the design, computer simulations were conducted based on real data collected from a typical conference room.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
