EP 0402947 A2 19901219 - Arrangement and method for encoding speech signal using regular pulse excitation scheme.
Title (en)
Arrangement and method for encoding speech signal using regular pulse excitation scheme.
Title (de)
Einrichtung und Verfahren zur Sprachkodierung mit Regular-Pulsanregung.
Title (fr)
Procédé et dispositif de codage de la parole utilisant une suite régulière d'impulsions d'excitation.
Publication
Application
Priority
- JP 15077089 A 19890614
- JP 25445889 A 19890929
Abstract (en)
A pre-processing circuit is provided to receive a discrete-time speech signal which are then divided into a plurality of frames. A parameter extracting circuit is coupled to a pre-processing circuit to which a discrete-time speech signal is applied and extracts a plurality of parameters therefrom. A impulse response calculating circuit is coupled to receive the plurality of parameters from the parameter extracting circuit, and generates an impulse response function signal using the plurality of parameters. An autocorrelation function circuit is coupled to receive the impulse response signal and generates an autocorrelation function signal using the signal applied. A cross-correlation function signal generates a cross-correlation function signal using the discrete-time speech signal and the autocorrelation function signal. A grid signal generator receive the output of the cross-correlation function calculating circuit, and outputs a grid signal indicative of a location of a first excitation pulse within one frame. A pulse amplitude calculating circuit receives the autocorrelation function signal, the cross-correlation function signal and the grid signal, and determines an amplitude sequence of excitation pulses within one frame.
IPC 1-7
IPC 8 full level
G10L 19/113 (2013.01)
CPC (source: EP)
G10L 19/113 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0402947 A2 19901219; EP 0402947 A3 19911023; EP 0402947 B1 19971126; DE 69031749 D1 19980108; DE 69031749 T2 19980514
DOCDB simple family (application)
EP 90111360 A 19900615; DE 69031749 T 19900615