Estimation of digital low-rate encoded voice link performance from instrumental measurements

Author

Dimolitsas, Spiros ; Corcoran, Franklin L. ; Phipps, John G., Jr. ; Baraniecki, Marion

Author_Institution

COMSAT Lab., Clarksburg, MD, USA

Volume

42

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

799

Lastpage

805

Abstract

The correlation between subjective and instrumental assessments of low-rate digital voice coder transparency to voice and nonvoice signals is quantified. The instrumental, or objective, performance and subjective voice quality of eight low-rate digital voice processors were compared by correlating the results obtained from a set of multilingual subjective assessments with the results obtained from a series of instrumental measurements employing readily available, analog interface-based techniques. The results show that meaningful information on link performance with voice signals can be obtained over a wide range of engineered link quality using instrumental technology employing nonvoice signals

Keywords

digital communication systems; encoding; performance evaluation; telephone lines; voice communication; voice equipment; CCITT signalling; correlation; digital low-rate encoded voice link; digital voice processors; instrumental measurements; multilingual subjective assessments; nonvoice signals; subjective voice quality; telephone network; Helium; Instruments; Knowledge based systems; Noise level; Particle measurements; Performance evaluation; Speech coding; Telegraphy; Telephony; Testing;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.234488

Filename

234488