(19)
(11) EP 0 929 065 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.12.1999 Bulletin 1999/51

(43) Date of publication A2:
14.07.1999 Bulletin 1999/28

(21) Application number: 99100141.3

(22) Date of filing: 08.01.1999
(51) International Patent Classification (IPC)6: G10L 3/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.01.1998 US 120412

(71) Applicant: AT&T Corp.
New York, NY 10013-2412 (US)

(72) Inventors:
  • Accardi, Anthony J.
    Somerset, New Jersey 08873 (US)
  • Cox, Richard Vandervoort
    New Providence, New Jersey 07974 (US)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano, Josif, Pisanty & Staub, Baaderstrasse 3
80469 München
80469 München (DE)

   


(54) A modular approach to speech enhancement with an application to speech coding


(57) A speech coder separates input digitized speech into component parts on an interval by interval basis. The component parts include gain components, spectrum components and excitation signal components. A set of speech enhancement systems within the speech coder processes the component parts such that each component part has its own individual speech enhancement process. For example, one speech enhancement process can be applied for analyzing the spectrum components and another speech enhancement process can be used for analyzing the excitation signal components.






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