Active Noise Control Method with Improved Robustness to Prevent Car Interior Noise

摘要

The present invention relates to an active noise control method with improved robustness for preventing noise in a passenger compartment, and an object of the present invention is to provide an active noise control (ANC) And to provide a Filtered-X LMS system with improved robustness that can minimize noise even at the initialization of the filter.;The present invention provides a microphone sensor for measuring a noise source X (n) at the same time as a noise having a specific frequency generated in the noise source X (n) passes through a transfer function P, In a general Filtered-X LMS system in which a noise source is measured and input to a DSP board and the input noise is processed by a program pre-inputted to the DSP board, the adaptive filter (W ₁ ) sent to the control speaker (S) by an adaptive filter (W ₁₎ at the predetermined step by a filter (W ₀₎ is such that the information is updated.