Alexander L Kain

US Patent:

7478039, Jan 13, 2009

Filed:

May 9, 2005

Appl. No.:

11/124729

Inventors:

Ioannis G Stylianou - Madison NJ, US
Alexander Kain - Portland OR, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G10L 11/04

US Classification:

704207, 704258

Abstract:

Natural-sounding synthesized speech is obtained from pieced elemental speech units that have their super-class identities known (e. g. phoneme type), and their line spectral frequencies (LSF) set in accordance with a correlation between the desired fundamental frequency and the LSF vectors that are known for different classes in the super-class. The correlation between a fundamental frequency in a class and the corresponding LSF is obtained by, for example, analyzing the database of recorded speech of a person and, more particularly, by analyzing frames of the speech signal.