Journal Forum

A Meta-Analysis of High Resolution Audio Perceptual Evaluation - June 2016
2 comments

Synthetic Reverberator - January 1960
3 comments

Sound Board: High-Resolution Audio - October 2015
4 comments

Access Journal Forum

AES E-Library

Bit Allocation for Linear Prediction Coefficients with Application to Lossless Audio Compression

Document Thumbnail

We propose a novel technique of using bit allocation for linear prediction coefficients in asymmetric lossless audio compression. We show how to determine the optimal bit allocation using a new closed-form formula for the excess error from quantization and describe a recently introduced algorithm (Optimization-Quantization Least Squares) which computes the optimal quantized prediction coefficients applied for the allocation. The proposed method, implemented as a modified asymmetrical OptimFROG, obtains small (but consistent) signal dependent compression improvements with virtually no decoder complexity increase (for an 847 MB audio corpus, up to 0.27%, on average around 0.06%). Compared to MPEG-4 ALS, it obtained 0.38% better compression, while being at the same time approximately 5 times faster at decoding.

Authors:
Affiliation:
AES Convention: Paper Number:
Publication Date:
Subject:
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=14616

Click to purchase paper as a non-member 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 $33 for non-members and is temporarily free for AES members.

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