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Nowadays, there are many commercial ANC (Active Noise Control) headphones using either digital signal processors (DSPs) as control unit to implement the feedback FXLMS algorithm, or analog circuit by using control theory's feedback structure to cancel the noise in active way. However, for DSP's product, it's much expensive than conventional passive headphone. As a result, this paper proposed using...
Academic researches and companies have developed active noise-reducing headphones using expensive digital signal processors. This work develops a modified feedback active noise control algorithm to develop an anti-noise headphone with a microcontroller. The system uses one general microphone per ear cup, offering a cheaper solution than existing noise-reducing headphones. Experimental results illustrate...
This paper presents an intelligent filter design method with a fixed-point digital signal processor (DSP) and illustrates its performance on the application of active noise cancellation (ANC) system. The proposed designing method uses magnitude and phase compensation techniques to eliminate the errors associated with the nonlinear distortion of analog devices in the application, and hence, to improve...
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