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Active noise control headphones for hearing protection are effective in the low frequency range, and both analog and digital controllers are used widely. Considering the bandwidth of noise reduction, the analog controller is more beneficial due to its shorter delay compared with the digital one. Analog controllers with fixed circuit structures are preferable for practical implementation. However,...
This paper presents an headphone ANC system with dual feedback control. It consisted of a speaker, two microphones, and two controllers to attenuate the ambient noise at microphone. The benefit of two controllers is that the control performance and stability of the system are improved. The lack of single controller can be compensated by another controller. Since the two feedback controllers affect...
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