Open AccessPerformance Evaluation of Low Cost Analog Feedback Active Noise Cancellation System
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.c1025.1083s19
Subject(s) - active noise control , headphones , noise (video) , digital signal processing , noise floor , computer science , effective input noise temperature , noise figure , noise measurement , electronic engineering , acoustics , noise reduction , engineering , telecommunications , bandwidth (computing) , physics , artificial intelligence , amplifier , image (mathematics)
Acoustic noise can be reduced by active noise cancellation (ANC) and passive noise cancellation (PNC) algorithm. The PNC can effectively attenuate the noise with high frequency, but not the noise with low frequency. ANC is one of the promising solution to reduce the low frequency noise. Commercial ANC headphones often use the digital signal processor (DSP) to perform the noise cancellation algorithm to cancel the annoying acoustic noise, but the cost is relatively high. A low-cost ANC solution is urgently needed to reduce the acoustic noise. The relationship between the frequency, distance and degree of magnitude of the noise level are also evaluated in this paper.