A two chip PCM voice CODEC with filters
- 1 December 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 14 (6), 961-969
- https://doi.org/10.1109/jssc.1979.1051304
Abstract
Architecture and design of a monolithic voice CODEC is described. The CODEC consists of 2 chips-the transmit chip includes the companding coder (nonlinear A/D) along with filtering functions, and the receive chip consists of the expanding decoder (nonlinear D/A) chip with its smoothing filter. Experimental results show the circuit to meet accepted requirements.Keywords
This publication has 9 references indexed in Scilit:
- A switched-capacitor high-pass filterIEEE Transactions on Circuits and Systems, 1980
- A PCM voice codec with on-chip filtersIEEE Journal of Solid-State Circuits, 1979
- CMOS switched-capacitor filter for a two-chip PCM voice coderPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1979
- Design techniques for MOS switched capacitor ladder filtersIEEE Transactions on Circuits and Systems, 1978
- Fully-integrated high-order NMOS sampled-data ladder filtersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1978
- Sampled analog filtering using switched capacitors as resistor equivalentsIEEE Journal of Solid-State Circuits, 1977
- MOS sampled data recursive filters using switched capacitor integratorsIEEE Journal of Solid-State Circuits, 1977
- A segmented μ-255 law PCM voice encoder utilizing NMOS technologyIEEE Journal of Solid-State Circuits, 1976
- An integrated NMOS operational amplifier with internal compensationIEEE Journal of Solid-State Circuits, 1976