EP 1143414 A1 20011010 - Estimating the pitch of a speech signal using previous estimates
Title (en)
Estimating the pitch of a speech signal using previous estimates
Title (de)
Schätzung der Grundfrequenz in einem Sprachsignal unter Berücksichtigung vorheriger Schätzungen
Title (fr)
Estimation de la fréquence fondamentale d'un signal de parole en utilisant les précédentes estimations
Publication
Application
Priority
EP 00610037 A 20000406
Abstract (en)
A method of estimating the pitch of a speech signal (2) comprises the steps of dividing the signal into segments, calculating for each segment a conformity function, and detecting peaks in the conformity function. Further, an average of pitch estimates from previous segments is calculated; for each peak the difference between its position and the average is calculated; and the position of the peak having the smallest difference is used as an estimate of the pitch. In this way a method less complex than prior art methods, and thus suitable for small digital signal processors, is provided. The method also avoids the pitch halving situation. When previously detected pitch period estimates are available, a small difference is expected between the correct pitch period and the average of the previous pitch periods. A similar device is also provided. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 11/04 (2006.01); G10L 25/90 (2013.01)
CPC (source: EP)
G10L 25/90 (2013.01)
Citation (search report)
- [XY] US 5826222 A 19981020 - GRIFFIN DANIEL WAYNE [US]
- [Y] US 5734789 A 19980331 - SWAMINATHAN KUMAR [US], et al
- [A] EP 0955627 A2 19991110 - TEXAS INSTRUMENTS INC [US]
- [A] ATKINSON I A ET AL: "PITCH DETECTION OF SPEECH SIGNALS USING SEGMENTED AUTOCORRELATION", ELECTRONICS LETTERS,GB,IEE STEVENAGE, vol. 31, no. 7, 30 March 1995 (1995-03-30), pages 533 - 535, XP000504300, ISSN: 0013-5194
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00610037 A 20000406