Title :
Active noise cancellation headset
Author :
Foo, Say-Wei ; Senthilkumar, T.N. ; Averty, Charles
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A new design for a headset with active noise cancellation capability is presented. For the proposed headset, a variable-step-size normalized least-mean-square (VSS-NLMS) algorithm is adopted in the combined audio and feedback active noise cancellation system. Experimental results show that, for the same set of signals, the average noise reduction using the proposed adaptive algorithm is 38 dB compared with 36 dB using the normalized least-mean-square algorithm and 14 dB using the least-mean-square algorithm. The speed of convergence using the proposed approach is also faster compared with the other two cases. Informal listening tests also favor the adoption of the proposed VSS-NLMS adaptive algorithm.
Keywords :
acoustic noise; active noise control; adaptive filters; audio signal processing; headphones; least mean squares methods; random noise; active noise cancellation headset; adaptive algorithms; adaptive filter; noise reduction; variable-step-size normalized LMS algorithm; variable-step-size normalized least-mean-square algorithm; Adaptive algorithm; Adaptive filters; Convergence; Feedback; Interference cancellation; Loudspeakers; Noise cancellation; Noise level; Noise shaping; Signal processing algorithms; active noise cancellation; audio signal; headset; signal processing;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1464576