	US 12,238,509 B2
	Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer
Simone Neukam, Kalchreuth (DE); and Jan Plogsties, Fuerth (DE)
Assigned to Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Munich (DE)
Filed on Dec. 5, 2023, as Appl. No. 18/529,718.
Application 18/529,718 is a continuation of application No. 17/665,394, filed on Feb. 4, 2022, granted, now 11,856,388.
Application 17/665,394 is a continuation of application No. 17/217,389, filed on Mar. 30, 2021, granted, now 11,265,672, issued on Mar. 1, 2022.
Application 17/217,389 is a continuation of application No. 16/904,292, filed on Jun. 17, 2020, granted, now 10,972,858, issued on Apr. 6, 2021.
Application 16/904,292 is a continuation of application No. 16/549,827, filed on Aug. 23, 2019, granted, now 10,721,582, issued on Jul. 21, 2020.
Application 16/549,827 is a continuation of application No. 15/003,287, filed on Jan. 21, 2016, granted, now 10,433,097, issued on Oct. 1, 2019.
Application 15/003,287 is a continuation of application No. PCT/EP2014/065227, filed on Jul. 16, 2014.
Claims priority of application No. 13177362 (EP), filed on Jul. 22, 2013; and application No. 13189230 (EP), filed on Oct. 18, 2013.
Prior Publication US 2024/0129687 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 7/00 (2006.01); G01H 7/00 (2006.01); G10K 15/08 (2006.01); G10K 15/12 (2006.01); G10L 19/008 (2013.01); H04S 3/00 (2006.01)

CPC H04S 7/305 (2013.01) [G01H 7/00 (2013.01); G10K 15/08 (2013.01); G10K 15/12 (2013.01); G10L 19/008 (2013.01); H04S 3/004 (2013.01); H04S 7/301 (2013.01); H04S 2400/01 (2013.01); H04S 2400/03 (2013.01); H04S 2420/01 (2013.01)]

17 Claims

1. A method for processing an audio signal in accordance with a room impulse response, the method comprising:

separately processing the audio signal with an early part of the room impulse response and with a late reverberation of the room impulse response or a synthetic reverberation, wherein processing the audio signal with the late reverberation of the room impulse response or with the synthetic reverberation comprises

obtaining one or more reverberator parameters, and

processing the audio signal on the basis of the one or more reverberator parameters; and

combining the audio signal processed with the early part of the room impulse response and the audio signal processed with the late reverberation of the room impulse response or with the synthetic reverberation,

wherein a transition from the early part to the late reverberation in the room impulse response is a time when a correlation measure reaches a threshold,

wherein the correlation measure describes with regard to the room impulse response a similarity of a decay in acoustic energy comprising an initial state and of the decay in acoustic energy starting at a point in time, said point in time following the initial state over a predefined frequency range,

wherein the threshold is set dependent on the correlation measure for said point in time, said point in time being a time of a selected one of the early reflections in the early part of the room impulse response, and

wherein the selected one of the early reflections is the first reflection.