US 11,791,789 B2
Audio signal processing method and device for controlling loudness level
Sangbae Chon, Seoul (KR); Kyutae Park, Seoul (KR); Younghoon Kwon, Seoul (KR); Hyunoh Oh, Gyeonggi-do (KR); Jeonghun Seo, Seoul (KR); Taegyu Lee, Seoul (KR); and Hyunjoo Chung, Seoul (KR)
Assigned to GAUDIO LAB, INC., Seoul (KR)
Filed by GAUDIO LAB, INC., Seoul (KR)
Filed on Mar. 22, 2022, as Appl. No. 17/700,494.
Application 17/700,494 is a continuation of application No. 17/053,772, granted, now 11,316,490, previously published as PCT/KR2020/003489, filed on Mar. 12, 2020.
Claims priority of application No. 10-2019-0029517 (KR), filed on Mar. 14, 2019; and application No. 10-2019-0124150 (KR), filed on Oct. 7, 2019.
Prior Publication US 2022/0231649 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03G 3/00 (2006.01); H03G 3/30 (2006.01)
CPC H03G 3/3089 (2013.01) 21 Claims
OG exemplary drawing
 
1. An audio signal processing apparatus comprising:
a receiver for receiving an input audio signal;
a processor for generating loudness metadata corresponding to the input audio signal; and
an outputter for transmitting the loudness metadata generated in the processor,
wherein the processor is configured to:
measure a loudness of the input audio signal to acquire loudness information of the input audio signal;
convert the loudness information to generate the loudness metadata; and
output the generated loudness metadata to an output device for outputting the input audio signal through the outputter, wherein the loudness information includes information representing a peak envelope for each frame of the input audio signal.