Higher-order ambisonics captures acceleration components to improve localization accuracy

Evidence

In principle, it is possible to extend the system to sample acceleration components and higher-order changes, in addition to the velocity components, to provide greater accuracy. The effective microphone patterns required for the different orders are shown in Figure 7.10. This results in the ability to produce more complex sound fields to give better localization accuracy. These higher-order ambisonic systems are now used for a variety of purposes and have been proposed as an intermediate format for production, because it is comparatively easy to mix down from an ambisonic format into the perplexing variety of different surround-sound formats. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2234

Categorization

• DEFINE: Clarifies the progression from first-order velocity sampling to higher-order ambisonic capture and why added components yield more accurate localization.