Open AccessAudio Transcoding for Audio Streams from a T‐DTV Broadcasting Station to a T‐DMB Receiver
Author(s) -
Bang Kyoung Ho,
Park Young Cheol,
Seo Jeongil
Publication year - 2006
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.06.0206.0016
Subject(s) - transcoding , computer science , digital audio broadcasting , digital television , digital audio , encoder , broadcasting (networking) , digital multimedia broadcasting , audio signal flow , digital video broadcasting , sound quality , coding (social sciences) , digital broadcasting , speech coding , real time computing , audio signal , computer hardware , computer network , telecommunications , speech recognition , statistics , mathematics , operating system
We propose an efficient audio transcoding algorithm that can convert audio streams from terrestrial digital television broadcasting service stations to those for terrestrial digital multimedia broadcasting hand‐held receivers. The proposed algorithm avoids the complicated psychoacoustic analysis by calculating the scalefactors of the bit‐sliced arithmetic coding encoder directly from the signal‐to‐noise ratio parameters of the AC‐3 decoder. The bit‐allocation process is also simplified by cascading the nested distortion control loop. Through subjective evaluation, it is shown that the proposed algorithm provides comparable audio quality to tandem coding but it requires much smaller complexity.