Acoustic Equalization for Headphones Using a Fixed Feed-forward Filter

Johannes Fabry; Fabio König; Stefan Liebich; Peter Jax

ICASSP 2019accepted0 citations

Acoustic Equalization for Headphones Using a Fixed Feed-forward Filter

Johannes Fabry, Fabio König, Stefan Liebich, Peter Jax

Abstract

The headphones market is expanding and new applications based on active noise control (ANC) are emerging. In this contribution, we derive a fixed feed-forward FIR filter for ANC headphones based on a minimum mean-square error (MMSE) cost function that realizes user-defined active equalization and attenuation of the ambient sound. By analyzing the limit of this solution with respect to active attenuation, we derive a generalized solution that allows the user to influence the equalization even for high attenuation. We investigate the importance of a priori information and runtime measurements of the acoustic transfer functions, and show how this can be utilized to further increase the accuracy of the equalization.

BibTeX

@inproceedings{icassp2019_acousticequaliza,
  title = {Acoustic Equalization for Headphones Using a Fixed Feed-forward Filter},
  author = {Johannes Fabry and Fabio König and Stefan Liebich and Peter Jax},
  booktitle = {ICASSP 2019},
  year = {2019}
}