• 한국컴퓨터정보학회논문지
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• 제22권10호
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• pp.63-71
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• 2017

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.

• 한국음향학회지
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• 제32권6호
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• pp.541-547
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• 2013

두세 명 혹은 그 이상의 참가자간사이의 다자간통화 시 음량불균형, 음량포화, 잡음레벨상승으로 인해서 음질 저하가 발생한다. 이 문제를 해결하기 위해서 본 논문은 소프트웨어 기반의 다지점제어장치를 위한 향상된 오디오 믹싱 알고리즘을 제안한다. 제안된 방식은 음성구간검출과 게인콘트롤이 결합된 기술로서 음성신호 분류, 음량 추정, 게인값 적용, 모든 채널의 음성신호를 믹싱하는 알고리즘들로 구성되어 있다. 제안된 오디오 믹싱 알고리즘은 효율적인 연산과 고품질의 음성을 제공하며, 실질적인 다자간 음성 통화에 적합하다.