Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 58, Issue 5, Pages 1936-1942Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2010.2058071
Keywords
Headset; microcontroller; modified feedback active noise control (ANC) algorithm
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Funding
- National Science Council of the Republic of China, Taiwan [NSC-98-2221-E-033-049]
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Conventional passive headsets often perform well in reducing high-frequency noise but perform badly to cancel the low-frequency noise. Accordingly, academic researches and companies have developed active noise-reducing headsets to cancel annoying noise at such lower frequencies using expensive digital signal processors (DSPs). This paper develops a modified feedback active noise control (ANC) algorithm to design an active noise-reducing headset with a low-cost microcontroller unit (MCU), offering a cheaper solution to noise reduction than existing audio headsets. The ways to save the computing load of a least mean square (LMS) algorithm by a microcontroller and to compensate for the output limit of speakers in a headset are also provided. Experimental results show that the proposed approach removes disturbing noise very well and outperforms the commercial headset.
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