VERFAHREN UND VORRICHTUNG ZUR SIGNALPRÄDIKTION FÜR EINEN SPRACHKODIERER

摘要

A method and a device for predicting periodicity data present in a voice signal to be coded that is subdivided into a series of sub-frames. The prediction is performed using an adaptive dictionary built up from the optimal excitation of each preceding sub-frame. The previous predictions are filtered and correlated to enable selection of the desired predicted signal, which is then compared with the starting information so that only the prediction error is coded and transmitted. The method and device are useful in video telephony.