The Design of an ADPCM/TASI System for PCM Speech Compression
J.P. Agrawal, J. B. O'Neal, J. Cooper · IRE Transactions on Communications Systems · 1981
This paper describes the design of a digital speech interpolation (DSI) system called ADPCM/TASI for adaptive differential PCM with time assignment speech interpolation. This system is designed to compress the output of two T1 24-channel PCM carrier terminals into a 1.544 Mbit/s signal that can be transmitted over a single T1 carrier line. The design is based on a bit slice microprocessor structure. Alternative designs are also described.