A note on line spectral frequencies (speech coding)
A. Lepschy, Gian Antonio Mian, Umberto Viaro · IEEE Transactions on Acoustics Speech and Signal Processing · 1988
The main properties of line spectral frequencies (LSFs) are analyzed by means of the root-locus technique. This leads to a better insight into the nature of this efficient predictor filter parametrization. The effects of quantization of the LSFs are illustrated by a numerical example.>