US 11,950,080 B2
Method and device for processing audio signal, using metadata
Hyunjoo Chung, Seoul (KR); and Sangbae Chon, Seoul (KR)
Assigned to GAUDIO LAB, INC., Seoul (KR)
Filed by GAUDIO LAB, INC., Seoul (KR)
Filed on Nov. 23, 2022, as Appl. No. 17/992,944.
Application 17/992,944 is a continuation of application No. 17/046,302, granted, now 11,540,075, previously published as PCT/KR2019/004248, filed on Apr. 10, 2019.
Claims priority of application No. 10-2018-0041394 (KR), filed on Apr. 10, 2018; application No. 10-2018-0078449 (KR), filed on Jul. 5, 2018; application No. 10-2018-0079649 (KR), filed on Jul. 9, 2018; application No. 10-2018-0080911 (KR), filed on Jul. 12, 2018; and application No. 10-2018-0083819 (KR), filed on Jul. 19, 2018.
Prior Publication US 2023/0091281 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 3/00 (2006.01); G10L 19/008 (2013.01); H04S 7/00 (2006.01)
CPC H04S 3/008 (2013.01) [G10L 19/008 (2013.01); H04S 7/30 (2013.01); H04S 2400/01 (2013.01); H04S 2400/13 (2013.01); H04S 2420/11 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An audio signal processing device rendering an audio signal including a first element signal,
the device comprising a processor for obtaining the audio signal including the first element signal and metadata including a first element reference distance information indicating a reference distance of the first element signal, and rendering the first element signal on the basis of the first element reference distance information, wherein:
the audio signal including the first element signal includes a second element signal which is simultaneously rendered with the first element signal;
the metadata is able to include second element distance information indicating a distance of the second element signal;
a number of bits required for representing the first element reference distance information is smaller than a number of bits required for representing the second element distance information;
a set of reference distances which is able to be represented by the first element reference distance information is a subset of a set of distances which is able to be represented by the second element distance information,
the first element signal is a channel signal or an ambisonics signal, and the second element signal is an object signal, and
the reference distance of the first element signal represents a radius of a circumference of a speaker layout required to render the first element signal when a listener is position in a sweet spot in a virtual space expressed by the first element signal,
wherein a minimum reference distance which is able to be indicated by the first element reference distance information is a predetermined positive number greater than 0.