Methods and equipment for academic coefficient collection, audio processing equipment, and computer-readable recording materials

Abstract

The invention relates to a method and apparatus for collecting HOA coefficients. The method for collecting the HOA coefficient includes: collecting information on the position of the virtual loudspeaker on a predefined spherical surface, where the predefined spherical surface includes M longitude circles and N latitude circles; Collect, based on location information and a predefined reference trigonometric function table, the trigonometric function values ​​corresponding to the location information, where the reference trigonometric function table includes the elevation trigonometric function table and / or the azimuthal trigonometric function table, the elevation trigonometric function table includes the trigonometric function values ​​corresponding to the elevation indices of the first reference points on the first circle of latitude, the first circle of latitude (the first path is one of M circles of longitude, The azimuthal trigonometric function table includes trigonometric function values ​​corresponding to the azimuthal indices of the second reference points on the first latitude circle, and the first latitude circle is one of N latitude circles; and collects the HOA coefficient for the virtual loudspeaker based on the trigonometric function values ​​corresponding to the position information. According to the invention, the amount of computation in the initial layer can be reduced, and storage space can be saved.