Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Subjective Evaluation of an Audio Distribution Coding System

Authors: Grant, Dane; Fielder, Louis D.; Davidson, Grant

AES Convention 111 · Paper 5443 · November 2001

Abstract

Subjective quality is a critical indicator of the suitability of bit-rate reduction codecs for digital audio contribution/distribution applications. Accordingly, a formal double-blind test was conducted to evaluate the subjective quality of a contribution/distribution cascade (eight Dolby E audio codecs in tandem), both separately and when combined with three standardized stereo emission codecs. In this test, the contribution/distribution cascade exceeded the ITU-R basic audio quality requirements for broadcast applications. The results further indicate that when using the contribution/distribution cascade in tandem with any one of the emission codecs, audio quality is effectively limited by the emission codec alone. The test methodologies conformed to Recommendation ITU-R BS.1116, and hence represent an estimate of worst-case performance.

Details

Published in
AES Convention 111
AES Convention
111
Paper number
5443
Publication date
November 6, 2001
Session subject
Psychoacoustics and Audio Testing
Affiliation
Dolby Laboratories, Inc., San Francisco, CA (See document for exact affiliation information.)
Type
Convention Paper