DOI : https://doi.org/10.18517/ijaseit.1.4.80

A New Voice Controlled Noise Cancellation Approach

Ali O. Abid Noor (1), Salina Abdul Samad (2), Aini Hussain (3), Aishah Fauthan (4)
(1) Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia
(2) Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia
(3) Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia
(4) Institute of Micro Engineering and Nano Electronics, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia
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How to cite (IJASEIT) :
Noor, Ali O. Abid, et al. “A New Voice Controlled Noise Cancellation Approach”. International Journal on Advanced Science, Engineering and Information Technology, vol. 1, no. 4, Aug. 2011, pp. 386-90, doi:10.18517/ijaseit.1.4.80.
Citation Format :
This paper presents a new approach to control the operation of adaptive noise cancellers (ANCs). The technique is based on using the residual output from the noise canceller to control the decision made by a voice activity detector (VAD). Threshold of full band energy feature is adjusted according to the residual output of the noise canceller. In variable background noise environment, the threshold controlled VAD prohibits the reference input from containing some components of actual speech signal during adaptation periods. The convergence behavior of the adaptive filter is greatly improved, since the reference input will be highly correlated with the primary input. In addition, the computation power will be reduced since the output of the adaptive filter will be calculated only during non- speech periods. The threshold controlled noise canceller achieves a cleaner output in about 50% of the time required by a non-controlled noise canceller.

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