AES E-Library

Describing Telephone Speech Codec Quality Degradations by Means of Impairment Factors

The equipment impairment factor methodology adopted by the ITU-T for describing perceptual quality degradations associated with nonwaveform telephone speech codecs is discussed with regard to other degradations of the transmission channel. A new algorithm allows such factors to be calculated from the results of auditory tests, and first steps toward a derivation by means of instrumental models are presented. Limitations of the current approach for codec tandems are pointed out.

Authors: Möller, Sebastian; Berger, Jens
Affiliations: Institut für Kommunikationsakustik (IKA), Ruhr-Universität Bochum, Bochum, Germany ; T-Systems Nova GmbH Berkom,Berlin, Germany(See document for exact affiliation information.)
JAES Volume 50 Issue 9 pp. 667-680; September 2002 Import into BibTeX

Click to purchase paper or login as an AES member. If your company or school subscribes to the AES Journal then you can look for this paper in the institutional version of the Online Journal. 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: (CD aes19)   /jrnl2002/2002/0667.pdf

Start a discussion about this paper!