Implementation of Audio Equalization in Video-on-Demand Broadcast Content = 주문형비디오 방송콘텐츠의 음량 균일화 구현

다국어 초록 (Multilingual Abstract)

In this paper, we develop the system for audio volume equalization of video on demand(VoD) content and propose the solution for it. In recent years, there has been a steady increase in the number of VoD users in addition to linear channels. However, viewers ought to sit in an uncomfortable way, adjusting the volume intermittently while they are broadcasted. Sudden changes of volume occur between the broadcasting channels, the programs from the co-channel, or the linear channels and the VoDs. Especially, upsurged dissatisfaction from the televiewers has been found due to the unequalized volume when shifting between the linear channel and the VoD. In order to solve this problem, multilateral efforts were put forth, such as a system for keeping the volume at a certain level in digital broadcasting program has been legislated domestically. It leads success in equalizing linear channel volume. On contrary, too little notice has been taken for distorted volume problem of video on demand(VoD) content. In this paper, we developed and applied the volume equalization system into VoD content to achieve uniformization, a similar condition with linear channel(–24LKFS). This suggestion helped uneven current of volume which was in the stage –16 ~ -20LKFS to stable condition by lowering into the stage of –24LKFS. It also brought 20% increase in perspective of volume quality satisfaction level.

목차 (Table of Contents)

• Abstract
• I. Introduction
• II. Related works
• Ⅲ. The Proposed Scheme
• IV. Experiment and analysis
• V. Conclusions
• REFERENCES

참고문헌 (Reference)

1 박성균, "디지털 방송용 오디오 레벨 계측 알고리즘의 실시간화 연구" 한국전자파학회 16 (16): 427-437, 2005

2 S.O. Lee, "Study on Digital TV Broadcast Volume" 80 (80): 2013

3 O.S. Cho, "Standardization and regulation of international broadcasting volum" 142 : 83-87, 2012

4 "Standard volume of a digital broadcast program" Ministry of Science, ICT and Future Planning 2014

5 S.O. Lee, "Stabled Television volume level" 21 (21): 2016

6 "Rec. ITU-R BS.1770-1, “Algorithms to measure audio programmeloudness and true-peak audio level”"

7 NeoConvergence, "Neo Audio Loudness Control materials" 2016

8 "Guideline for Digital Television Broadcasting Program Loudness Standards" Central Radio Management Station 2016

9 Miranda, "Function Block Diagram of AXINO" 2015

10 "EBUR128 Source Code"

11 B. H. Choi, "Audio signal size control method and device" Intellectual Discovery Co., Ltd 2013

12 XEIN M&C, "Audio Loudness Control Technical Report" 2016

13 견두헌, "Absolute Sound Level System" 숭실대학교 대학원 2013

14 "ATSC Document A/85:2009 “Comfort Zone”"

15 S. U. Lee, "A Study On Digital Broadcasting Program Audio Level Regulation and Management System" 2013