(19)
(11) EP 1 431 962 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.12.2004 Bulletin 2004/49

(43) Date of publication A2:
23.06.2004 Bulletin 2004/26

(21) Application number: 04100553.9

(22) Date of filing: 22.05.2001
(51) International Patent Classification (IPC)7: G10L 21/02, G10L 19/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 22.05.2000 US 206156 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01000172.5 / 1158495

(71) Applicant: TEXAS INSTRUMENTS INCORPORATED
Dallas, TX 75265 (US)

(72) Inventor:
  • McCree, Alan V
    75248, Dallas (US)

(74) Representative: Holt, Michael et al
Texas Instruments Ltd., PO Box 5069
Northampton, Northamptonshire NN4 7ZE
Northampton, Northamptonshire NN4 7ZE (GB)

   


(54) Wideband speech coding system and method


(57) A speech encoder/decoder for wideband speech with a partitioning of wideband into lowband and highband, and convenient coding of the lowband. The narrowband coding may be an LP-based voiceband coder; and the high band coding may include spectral reversal so it can effectively use the voiceband coder's quantizer. The embedded lowband may be extracted for a lower bit rate decoder.






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