AES Store

Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007

Reflecting on Reflections - June 2014

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

A Bit Rate Scalable Perceptual Coder for MPEG-4 Audio

The paper describes a bit-rate scalable coder of the current MPEG-4 Audio working draft. The coder allows to decode useful subsets of the bitstream. This scalability is achieved by combining a core coder which, in general, is not a perceptual coder, with one or more stages based on the perceptual coding modules of the MPEG-4 Audio working draft. Despite the usage of nonperceptual core coders such as ITU-T G.729, G.723.1 or the MPEG-4 CELP coder, the system still maintains complete control over the psychoacoustic model in the combined states, thus reaching the same quality as the un-scaled MPEG Audio coders, although at somewhat higher bit rates. However, the system achieves a better bit-rate efficiency than a simul-cast solution.h

AES Convention: Paper Number:
Publication Date:

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:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society