Adaptive Feedback ANC using Multirate Audio-Integrated system

Conventional audio-integrated feedback active noise control (ANC) systems use single rate to process low rate noise signal and high rate audio signal, which degrades the performances of both ANC and audio systems. This paper presents multirate audio-integrated feedback ANC system to admit the different sampling frequency in both ANC and audio system based on interpolation and decimation techniques. The improved performance is verified by real-time experimental results implemented on the audio-integrated ANC headrest system.