AES E-Library

Characterization of Communications Systems Using a Speech-Like Test Stimulus

Conventional objective means of characterizing communications systems are often inadequate. In particular when a system contains nonlinear elements such as low bit-rate encoders, some types of speech transducer, active gain control, and echo-cancellers, simple steady-state measurements are not sufficient to predict subjective performance. The use of speech-like test stimuli to characterize nonlinear systems is not new but this paper presents a new speech-like composite signal which works in conjunction with a new perception-based objective measure to provide a versatile measurement technique. Early results are given which indicate the usefulness of the method to provide a perceptual ranking for communications systems, and also as a diagnostic tool.

Authors: Hollier, M. P.; Guard, D. R.; Hawksford, Malcolm J.
Affiliations: B T Laboratories, Martlesham Heath, Ipswich, UK ; University of Essex, Department of Electronic Systems Engineering, Colchester, UK(See document for exact affiliation information.)
AES Convention:93 (October 1992) Paper Number:3395 Import into BibTeX
Subject:Measurement

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: (CD aes12)   /pp9193/pp9210/3455.pdf

Start a discussion about this paper!