Created 6 January 2011
Last modified: 30 December 2019
The following material is intended to supplement the article ``Digital speech and the Internet protocol: the 1974 origins of VoIP,'' which appeared in the IEEE Signal Processing Magazine, Vol. 22, July 2005, pp. 87-90, and the 2010 book Linear Predictive Coding and the Internet Protocol: A survey of LPC and a History of of Realtime Digital Speech on Packet Networks, A short book expanding on the basic story.
The book also appeared as a two part article in
"A survey of linear predictive coding: Part I of Linear Predictive Coding and the
Foundations and Trends in Signal Processing, Vol. 3, No. 3, pp. 153-202.
"A history of realtime digital speech on packet networks: Part II of Linear Predictive Coding and the Internet Protocol," Foundations and Trends in Signal Processing, Vol. 3, No. 4, pp. 203-303153-203.
For other historical information on the Internet, see http://www.pcbargainhunter.com/articles/history-of-the-internet.html
Robert M. Gray