Linear Statistical Modeling of Speech and its Applications -- Over 36 year history of LPC --

Graduate School of Engineering, Nagoya University Furo-cho 1, Chikusa-ku Nagoya 464-8603, Japan [email protected] Abstract Linear prediction of speech signal is now a common knowledge for students, engineers and researchers who are interested in speech science and technology. The first introduction of the concept to the international speech community was two presentations [6],[7] at the 6th ICA held in Tokyo in 1968. While Atal and Schroeder used the concept of linear prediction to encode speech waveform efficiently, Itakura and Saito used the concept of maximum likelihood estimation of speech spectrum to implement a new type of vocoder. Since this epoch, these concepts are investigated widely in order to achieve accurate speech analysis, efficient transmission of speech and speech recognition. In this paper, the history of LPC will be surveyed mainly based on my personal experience.