EP 0052041 B1 19860102 - METHOD AND DEVICE FOR PITCH PERIOD DETERMINATION
Title (en)
METHOD AND DEVICE FOR PITCH PERIOD DETERMINATION
Publication
Application
Priority
FR 8023881 A 19801107
Abstract (en)
[origin: US4443857A] The process uses a set of data characteristic of the speech signal, supplied by processing circuits: measurements of the time intervals between zero crossovers and measurements of the energy in the half-waves of this signal. The test procedure implemented by a microprocessor selects the half-waves whose energies exceed thresholds characterizing pitch period beginnings. These thresholds are predetermined for the first two successive sums selected, then depend on the energy values of the preceding half-waves selected differently according as to whether the voiced character of the signal is acquired or not. Complementary tests are used for minimizing detection errors.
IPC 1-7
IPC 8 full level
G10L 11/04 (2006.01); G10L 25/90 (2013.01)
CPC (source: EP US)
G10L 25/90 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0052041 A1 19820519; EP 0052041 B1 19860102; DE 3173397 D1 19860213; FR 2494017 A1 19820514; FR 2494017 B1 19851025; US 4443857 A 19840417
DOCDB simple family (application)
EP 81401684 A 19811023; DE 3173397 T 19811023; FR 8023881 A 19801107; US 31813581 A 19811104