Adaptive noise equalizer with equal-loudness compensation

We apply equal-loudness compensation to the adaptive active noise equalizer (ANE). Previous works have focused mainly on using an adaptive gain factor to control the degree of noise reduction or amplification. In order to have a more accurate perception of the actual attenuation or amplification of the noise level, equal-loudness compensation is incorporated into the gain factor. This approach provides an improved performance as compared to the conventional ANE, in term of perceived loudness of the residual noise.