Patent ID: 11875803
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. An apparatus for decoding a compressed Higher Order Ambisonics (HOA) sound representation of a sound or sound field, the apparatus comprising:
a receiver for receiving a bit stream comprising the compressed HOA sound representation; and
a decoder for decoding the compressed HOA sound representation based on a lowest integer number βe, wherein the lowest integer number βe is determined based on βe=┌log2(┌log2(√{square root over (KMAX)}·O)┐+1)┐,
wherein KMAX=max1≤N≤NMAXK(N,Ω1(N), . . . , ΩO(N)), wherein N is an order of the compressed HOA sound representation, wherein NMAX is a maximum order of interest of the compressed HOA sound representation, wherein Ω1(N), . . . , ΩO(N) are directions of virtual loudspeakers for rendering the HOA sound representation, wherein O=(N+1)2, and wherein K is a ratio of a squared Euclidean ∥Ψ∥22 norm of a virtual loudspeaker positions mode matrix and O.