Improving Binaural Ambisonics Decoding by Spherical Harmonics Domain Tapering and Coloration Compensation

Christoph Hold; Hannes Gamper; Ville Pulkki; Nikunj Raghuvanshi; Ivan J. Tashev

ICASSP 2019accepted0 citations

Improving Binaural Ambisonics Decoding by Spherical Harmonics Domain Tapering and Coloration Compensation

Christoph Hold, Hannes Gamper, Ville Pulkki, Nikunj Raghuvanshi, Ivan J. Tashev

Abstract

A powerful and flexible approach to record or encode a spatial sound scene is through spherical harmonics (SHs), or Ambisonics. An SH-encoded scene can be rendered binaurally by applying SH-encoded head-related transfer functions (HRTFs). Limitations of the recording equipment or computational constraints dictate the spatial reproduction accuracy, thus rendering might suffer from spatial degradation as well as coloration. This paper studies the effect of tapering the SH representation of a binaurally rendered sound field in conjunction with its spectral equalization. The proposed approach is shown to reduce coloration and thus improves perceived audio quality.

BibTeX

@inproceedings{icassp2019_improvingbinaura,
  title = {Improving Binaural Ambisonics Decoding by Spherical Harmonics Domain Tapering and Coloration Compensation},
  author = {Christoph Hold and Hannes Gamper and Ville Pulkki and Nikunj Raghuvanshi and Ivan J. Tashev},
  booktitle = {ICASSP 2019},
  year = {2019}
}