METHOD OF SEQUENTIAL OPTIMIZATION FOR THE ALGEBRAIC CODE-BOOK SEARCH IN A SPEECH CODING SYSTEM

摘要

The present invention proposes a sequential optimization and threshold for reducing complexity of calculation in the ACELP (Algebraic Code-book Excitation Linear Prediction) method, which is currently used as a voice codec of a mobile communication terminal. It is a technology suitable for reducing the amount of calculation of the voice codec required for video calls, multimedia mail (voice and data), and file transfer between calls in the IMT-2000 service and the high quality voice transmission in the future.