LECTURE 17: SPECTRAL TRANSFORMATIONS
- Objectives:
- Introduce perceptual linear prediction
- Discuss speaker-dependent frequency scaling
- Introduce vocal tract length normalization
- Review
The original reference for perceptual linear prediction is:
H. Hermansky, "Perceptual linear predictive (PLP) analysis of speech,"
J. Acoust. Soc. Amer.,
vol. 87, no. 4, pp. 1738--1752, 1990.
Similarly, the original reference for vocal tract length normalization
is reprinted here:
A. Andreou, T. Kamm, and J. Cohen,
"Experiments in vocal tract normalization,"
Proceedings CAIP Workshop: Frontiers in Speech Recognition II,
1994.
The course textbook and resource links also contain good
explanations of this material.