US 12,242,972 B2
Methods and systems for generating acoustic impulse responses
Finnur Pind, Reykjavík (IS); and Jesper Pedersen, Garðabær (IS)
Assigned to TREBLE TECHNOLOGIES, Reykjavik (IS)
Filed by Treble Technologies, Reykjavík (IS)
Filed on Nov. 28, 2023, as Appl. No. 18/521,850.
Claims priority of application No. 22209959 (EP), filed on Nov. 28, 2022; application No. 23195400 (EP), filed on Sep. 5, 2023; and application No. 23204159 (EP), filed on Oct. 17, 2023.
Prior Publication US 2024/0179487 A1, May 30, 2024
Int. Cl. H04S 7/00 (2006.01); G06N 3/0455 (2023.01); G06N 3/094 (2023.01)
CPC G06N 3/094 (2023.01) [G06N 3/0455 (2023.01); H04S 7/302 (2013.01); H04S 7/303 (2013.01); H04S 7/305 (2013.01); H04S 7/307 (2013.01); H04S 2400/11 (2013.01); H04S 2400/15 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A computer implemented method for generating an impulse response for a listening point in a room, the method comprising:
receiving a 3D model of the room, a position of at least one directive sound source for emitting sound in a defined direction in the 3D model of the room, and acoustic properties of at least one boundary in the 3D model of the room;
determining, using a time-domain discontinuous Galerkin finite element method (DGFEM), a plurality of wave-based impulse responses of a wave-based propagation of a plurality of impulses emitted at the at least one directive sound source for emitting sound in a defined direction in the 3D model of the room and received at the listening point within a first acoustic frequency range, wherein the at least one directive sound source is modelled using spherical harmonics functions, wherein each of the plurality of impulses matches a directivity pattern associated with at least one spherical harmonics function;
generating a directional wave-based impulse response of the wave-based propagation of the plurality of impulses emitted at the at least one directive sound source by combining the plurality of wave-based impulse responses;
determining, using a geometrical acoustics-based solver, a geometrical impulse response of a ray-based propagation of an impulse emitted at the at least one directive sound source for emitting sound in a defined direction in the 3D model of the room and received at the listening point within a second acoustic frequency range; and
generating the impulse response by merging the directional wave-based impulse response and the geometrical impulse response.