AES Store

Journal Forum

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
4 comments

Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
9 comments

New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
1 comment

Access Journal Forum

AES E-Library

Lossless Audio Bit Rate Reduction

Thank God, audio signals tend usually to be quite different from pure white noise. The method described in this paper takes advantage of that basic fact in converting linear PCM to a new representation of audio content. No magic is involved but the simple application of some general information theory basics. This paper describes some fundamentals on how to decorrelate music or speech samples by the use of predictive coding technique involving a multi-stage approach, optimized for the requirements of a real time implementation. Some implementation examples are then examined both on general purpose CPUs (such as IBM PC) and on DSP. Resulting charts are given to illustrate the compression ratios obtained for various types of audio signals in comparison with the entropy of the computerized signals.

Authors:
Affiliations:
AES Conference:
Paper Number:
Publication Date:
Subject:

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