EUROSPEECH 2001 Scandinavia
7th European Conference on Speech Communication and Technology

Aalborg, Denmark
September 3-7, 2001


Coding Method for Successive Pitch Periods

Ari Heikkinen, Vesa T. Ruoppila, Samuli Pietilš

Nokia Research Center, Finland

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

Full Paper

Bibliographic reference.  Heikkinen, Ari / Ruoppila, Vesa T. / Pietilš, Samuli (2001): "Coding method for successive pitch periods", In EUROSPEECH-2001, 1965-1968.