To study perceptual discrimination between two digital audio coding formats, ?Direct Stream Digital? and highresolution (24-bit, 176.4 kHz) PCM, subjective listening comparison tests were conducted with specially recorded sound stimuli in stereo and surround. To guarantee their reliability, validity and objectivity, the double-blind ABX tests followed three main principles: The signal chain should be based on identical audio components as far as possible; these components should be able to convey very high audio frequencies; and the test population should consist of various groups of subjects with different listening expectations and perspectives. The results showed that hardly any of the subjects could make a reproducible distinction between the two encoding systems. Hence it may be concluded that no significant differences are audible.

Authors: Blech, Dominic; Yang, Min-Chi
Affiliation: Erich-Thienhaus-Institute (Tonmeisterinstitut), University of Music Detmold, Germany
AES Convention: 116 (May 2004) Paper Number: 6086
Publication Date: May 1, 2004 Import into BibTeX
Subject: Spatial Perception and Processing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=12799

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 free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 116Papers)   /116/6086.pdf

Start a discussion about this paper!