Objective assessment methodology and evaluation of low-rate digital voice processors
Abstract
Methods and results are presented for an objective-instrumentation evaluation of 16 kbit/sec-operation source-encoding algorithms, which aimed to ascertain whether 'toll quality' performance with nonvoice signals is possible at such an operating rate. It is found that while 16-kbit/sec source encoding is unable to accommodate voiceband data rates in excess of 2.4 kbit/sec with acceptable quality, satisfactory performance is obtainable with signaling. The 16 kbit/sec voice coding technology is therefore judged to be suitable for public-switched telephone network applications where alternative facilities for voiceband data traffic are provided.
- Publication:
-
COMSAT Technical Review
- Pub Date:
- 1991
- Bibcode:
- 1991COMTR..21..473D
- Keywords:
-
- Digital To Voice Translators;
- Speech Recognition;
- Voice Communication;
- Voice Data Processing;
- Coding;
- Performance Tests;
- Speech Baseband Compression;
- Communications and Radar