AES E-Library

aacPlus, Only a Low-Bitrate Codec?

aacPlus, the combination of the well known MPEG AAC and the Spectral Band Replication tool SBR has been introduced as a highly efficient low-bitrate audio codec, representing today's State-of-the-Art by providing full bandwidth, near CD audio quality at 48kbit/s stereo. It is thus suited for applications that demand highest compression ratios. This paper discusses benefits when using aacPlus at moderate compression ratios in the range of 80 to 128kbit/s stereo, where so far AAC was the codec of choice. The technological approach for applying SBR in such a scenario is described and subjective evaluations of the presented solution as well as an overview on system and implementation aspects are given.

Authors: Ehret, Andreas; Horich, Holger; Kjorling, Kristofer; Purnhagen, Heiko; Roden, Jonas
Affiliations: Coding Technologies, Nuremberg, Germany ; Coding Technologies, Stockholm, Sweden(See document for exact affiliation information.)
AES Convention:117 (October 2004) Paper Number:6199 Import into BibTeX
Subject:Lossy and Lossless Audio Coding

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 117Papers)   /117/6199.pdf

Start a discussion about this paper!