Издательство Now Publishers, Серия Foundations and Trends in Signal Processing, 2010, -152 pp.
A survey of LPC and a History of Real-time Digital Speech on Packet Networks
In December 1974 the first real-time conversation on the ARPAnet took place between Culler-Harrison Incorporated in Goleta, California, and MIT Lincoln Laboratory in Lexington, Massachusetts. This was the first successful application of real-time digital speech communication over a packet network and an early milestone in the explosion of real-time signal processing of speech, audio, images, and video that we all take for granted today. It could be considered as the first voice over Internet Protocol (VoIP), except that the Internet Protocol (IP) had not yet been established. In fact, the interest in real-time signal processing had an indirect, but major, impact on the development of IP. This is the story of the development of linear predictive coded (LPC) speech and how it came to be used in the first successful packet speech experiments. Several related stories are recounted as well. The history is preceded by a tutorial on linear prediction methods which incorporates a variety of views to provide context for the stories.
