EUROSPEECH 2001 Scandinavia
This paper presents a coding method for successive pitch periods of a speech signal. In the proposed method, a priori knowledge of the statistical properties of successive pitch periods is used by designing a shaped lattice structure that covers the most probable points in the pitch space. We also present briefly a pitch search algorithm for the shaped lattice. An example implementation of shaped lattice coding is given for a modified IS-641 speech coder. Based on the simulation results, the proposed scheme achieves capacity savings compared to the conventional methods
Bibliographic reference. Heikkinen, Ari / Ruoppila, Vesa T. / Pietilš, Samuli (2001): "Coding method for successive pitch periods", In EUROSPEECH-2001, 1965-1968.