Global Patent Index - EP 0212323 A3

EP 0212323 A3 19880316 - METHOD AND APPARATUS FOR GENERATING A SIGNAL TRANSFORMATION AND THE USE THEREOF IN SIGNAL PROCESSINGS

Title (en)

METHOD AND APPARATUS FOR GENERATING A SIGNAL TRANSFORMATION AND THE USE THEREOF IN SIGNAL PROCESSINGS

Publication

EP 0212323 A3 19880316 (EN)

Application

EP 86110212 A 19860724

Priority

US 77053085 A 19850829

Abstract (en)

[origin: EP0212323A2] A method and apparatus for generating a signal transformation useful in signal processing is provided. According to the preferred embodiment, a signal, e.g., a speech waveform, is first converted into a sequence of digital data samples, and a reference position along a first sub-part of the sequence is then selected. A "weighted" histogram corresponding to the reference position is then generated according to a correlation function. Thereafter, a new reference position is selected, for example, at a sub-part of the sequence located a pitch period of the signal from the original reference position, and an additional histogram is generated for this sub-part. The plurality of histograms comprise the transformation of the signal, which retains a substantial part of the informational content of the original signal. Therefore, the transformation is then used as the signal itself in signal processing applications such as speech compression and synthesis.

IPC 1-7

G10L 9/08

IPC 8 full level

G06F 5/00 (2006.01); G10L 19/00 (2013.01); H03M 1/12 (2006.01)

CPC (source: EP)

G10L 19/00 (2013.01)

Citation (search report)

  • [A] US 4004096 A 19770118 - BAUER WILLIAM R, et al
  • [A] FR 2337393 A1 19770729 - DIALOG SYST [US]
  • [A] JOURNAL OF THE AUDIO ENGINEERING SOCIETY, vol. 10, no. 2, April 1962, pages 163-166; M.R. SCHROEDER: "Correlation techniques for speech bandwidth compression"
  • [A] SIGNAL PROCESSING, vol. 5, no. 6, November 193, pages 491-513, Elsevier Science Publishers B.V., Amsterdam, NL; E. AMBIKAIRAJAH et al.: "The time-domain periodogram algorithm"

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0212323 A2 19870304; EP 0212323 A3 19880316; JP S6252600 A 19870307

DOCDB simple family (application)

EP 86110212 A 19860724; JP 20192286 A 19860829