公开(公告)号：US11688385B2

公开(公告)日：2023-06-27

申请号：US17202863

申请日：2021-03-16

Applicant: Nokia Technologies Oy

Inventor： Antti Eronen ,  Sujeet Mate ,  Jussi Leppanen ,  Pasi Liimatainen

IPC: G10K15/08

CPC classification number: G10K15/08

Abstract: A method and apparatus for simulating reverberation in rendering systems. A decoder/renderer may determine how to simulate reverberation with reference to audio scene description format file information or other bitstream information regarding the virtual scene geometry, and/or a lookup table. Late reverberation may be generated based on reverberator parameters derived from the virtual scene geometry, including the lengths of delay lines, attenuation filter coefficients, and diffuse-to-direct ratio characteristics, using a feedback delay network. Early reverberation may be generated based on determining what potential reflecting elements in a virtual scene geometry are reflecting planes; this may involve the simulation of ray reflection, potentially through beam tracing.

公开(公告)号：US20210287651A1

公开(公告)日：2021-09-16

申请号：US17202863

申请日：2021-03-16

Applicant: Nokia Technologies Oy

Inventor： Antti ERONEN ,  Sujeet Mate ,  Jussi Leppanen ,  Pasi Liimatainen

IPC: G10K15/08

Abstract: A method and apparatus for simulating reverberation in rendering systems. A decoder/renderer may determine how to simulate reverberation with reference to audio scene description format file information or other bitstream information regarding the virtual scene geometry, and/or a lookup table. Late reverberation may be generated based on reverberator parameters derived from the virtual scene geometry, including the lengths of delay lines, attenuation filter coefficients, and diffuse-to-direct ratio characteristics, using a feedback delay network. Early reverberation may be generated based on determining what potential reflecting elements in a virtual scene geometry are reflecting planes; this may involve the simulation of ray reflection, potentially through beam tracing.