AES Store

Journal Forum

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

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Bitrate Reduction of High Quality Audio Signals by Modeling the Ears Masking Thresholds

Since few years there are some different source-coding systems for high quality audio signals (CD-quality) which exploit the redundancy and irrelevancy of speech and music signals for an efficient data-reduction. Psychoacoustic research is the basis for the subband coding system MUSICAM (Masking-pattern Universal subband Integrated Coding and Multiplexing), which was developed in cooperation of french, dutch and german scientists. During the development different coding and sound analyzing strategies were used and combined to optimize this system. A combination of two analysis methods, subband and transform, seems to be the best strategy to achieve the highest reduction of the bit-rate. Subband samples are coded using a bit-allocation, which is mainly derived from the spectral values of a Fourier transform. For the synthesis in the decoder only the subband method is used.

Authors:
Affiliation:
AES Convention: 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