Parametric envelope in LPC speech coders
M. Asunción Moreno Bilbao, Miguel Angel Lagunas, Sisco Vallverdú Bayés · RECERCAT (Consorci de Serveis Universitaris de Catalunya) · 1985
During the last decade, many efforts have been devoted to the relative importance of associated functions like magnitude and phase of Fourier Transforms in image and signal bandwidth reduction. The reported work deals with the importance of the real envelope and instantaneous frequency in signal analysis/sintesis problems. In this paper authors show a method to parametrize the envelope and instantaneous frequency of a real signal. This method is very closed to spectral analysis methods in the sense that with an appropiate study, time domain and frequency domain can be analyced in a similar way.