Abstract
Virtual and augmented reality technologies demand high-quality spatial sound recording and playback through headphones. However, achieving high-quality binaural reproduction requires a complex recording system and a large number of microphones. To address this issue, a recent study proposed Bilateral Ambisonics, which involves capturing the sound-field using two low-order microphone arrays located ear-distance apart. We present an analytical analysis of the limitation of a previously suggested head-tracking compensation solution to Bilateral Ambisonics. An alternative approach is proposed to overcome these limits in which the translation operation is band-limited. A subjective evaluation and a listening test are provided and complement the findings of the analytical analysis. Results indicate that in a static scenario, compensating for small lateral head-rotations up to ±30° with good accuracy is possible for microphone arrays of spherical harmonics (SH) order of 1 and for medium rotations of up to ±60° with SH order of 2. When a dynamic scenario is considered, Bilateral Ambisonics of order 2 were comparable to High-order Ambisonics, and Bilateral Ambisonics of order 1 provided performance comparable to third order Ambisonics with MagLS.
Original language | English |
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Pages (from-to) | 959-972 |
Number of pages | 14 |
Journal | IEEE/ACM Transactions on Audio Speech and Language Processing |
Volume | 32 |
DOIs | |
State | Published - 1 Jan 2024 |
Keywords
- Spatial sound
- head-tracking
ASJC Scopus subject areas
- Computer Science (miscellaneous)
- Acoustics and Ultrasonics
- Computational Mathematics
- Electrical and Electronic Engineering