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Express Paper Open Access

Neural modeling and interpolation of binaural room impulse responses with head tracking

Authors: Qiao, Yue; Choueiri, Edgar

AES Convention 155 · Paper 158 · October 2023

Abstract

The use of neural networks for modeling and interpolating binaural room impulse responses (BRIRs) is investigated for facilitating spatial audio applications that require head tracking in multiple degrees of freedom. A deep neural network model is adopted from an architecture originally proposed for neural representation problems to predict unknown BRIRs that contain salient early reflection peaks, given head coordinates. Instead of its original time-domain formulation, a frequency-domain formulation is proposed to enhance the model efficiency and flexibility for band-limited BRIRs. Both model formulations are evaluated with measured and simulated BRIRs in terms of modeling accuracy and interpolation performance, respectively. It is shown that the frequency-domain formulation is more effecient at modeling band-limited BRIRs than its time-domain counterpart as the former only learns the partial frequency spectrum, and that models with both formulations significantly outperform conventional methods for interpolating sparse BRIRs.

Details

Published in
AES Convention 155
AES Convention
155
Paper number
158
Publication date
October 6, 2023
Session subject
Immersive & Spatial Audio
Affiliation
Princeton University; Princeton University (See document for exact affiliation information.)
Type
Express Paper