A 1.4 mW low-power feed-back FxLMS ANC VLSI design for in-ear headphones

Abstract

This work proposes a dedicated VLSI hardware architecture design that considers both audio signal processing requirements and hardware costs to achieve critical real-time active noise cancellation (ANC) performance for in-ear headphones. This new approach allows ANC systems to be operated at lower operating frequency which results in lower power consumption, and facilitates higher performance than that achieved by conventional ANC headphones. Compared with the existing works, the proposed design outperforms in attenuating wider bandwidth of noises, and saves 99.41% power consumption.