Pitch modification of speech using a low-sensitivity inverse filter approach

Author

Ansari, Rashid ; Kahn, Dan ; Macchi, Marian J.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA

Volume

5

Issue

3

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

60

Lastpage

62

Abstract

A simple and effective method for modifying the pitch of recorded speech units is described. This method was developed to overcome some limitations in the promising residual-excited linear prediction (RELP) technique. The key difference is that the choice of filter parameters in the new method is driven by a need for reducing sensitivity to pitch modification, rather than creating a residual with minimum energy as in RELP. Speech modifications using this method are superior in quality to those obtained with RELP, while at the same time being less sensitive than RELP to errors in pitch marking.

Keywords

filtering theory; inverse problems; prediction theory; speech processing; speech synthesis; RELP; concatenative synthesis; filter parameters; low-sensitivity inverse filter approach; pitch modification; recorded speech units; residual-excited linear prediction; speech modification; speech synthesis; Acoustic distortion; Frequency; Linear predictive coding; Nonlinear filters; Signal generators; Speech analysis; Speech synthesis; Transfer functions;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/97.661561

Filename

661561